cdesktop/cde/doc/C/guides/progGuide/ch07.sgm

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<Chapter Id="PG.widgs.div.1">
<Title Id="PG.widgs.mkr.1">Common Desktop Environment Motif Widgets</Title>
<Para>The Common Desktop Environment includes the Motif toolkit.<IndexTerm>
<Primary>Motif libraries</Primary>
</IndexTerm><IndexTerm>
<Primary>libraries</Primary>
<Secondary>Motif</Secondary>
</IndexTerm><IndexTerm>
<Primary>widgets</Primary>
<Secondary>Motif</Secondary>
</IndexTerm>
In addition, the
Common Desktop Environment provides four custom widgets you can use to
provide certain<IndexTerm>
<Primary>OPEN LOOK compatibility</Primary>
</IndexTerm><IndexTerm>
<Primary>compatibility</Primary>
<Secondary>OPEN LOOK</Secondary>
</IndexTerm>
OPEN LOOK&trade; and<IndexTerm>
<Primary>MW-windows compatibility</Primary>
</IndexTerm><IndexTerm>
<Primary>compatibility</Primary>
<Secondary>MW-windows</Secondary>
</IndexTerm>
Microsoft&reg; Windows functionality. This
chapter describes these Motif custom widgets.</Para>
<InformalTable Id="PG.widgs.itbl.1" Frame="All">
<TGroup Cols="1">
<ColSpec Colname="1" Colwidth="4.0 in">
<TBody>
<Row Rowsep="1">
<Entry><Para><!--Original XRef content: ''--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.2">
<!--Original XRef content: 'Using Common Desktop Environment Motif70'--><XRef Role="JumpText" Linkend="PG.widgs.mkr.2"></Para></Entry>
</Row>
<Row Rowsep="1">
<Entry><Para><!--Original XRef content: 'Text Field and Arrow Button Widget (DtSpinBox)73'--><XRef Role="JumpText" Linkend="PG.widgs.mkr.3"></Para></Entry>
</Row>
<Row Rowsep="1">
<Entry><Para><!--Original XRef content: 'Text Field and List Box Widget (DtComboBox)82'--><XRef Role="JumpText" Linkend="PG.widgs.mkr.8"></Para></Entry>
</Row>
<Row Rowsep="1">
<Entry><Para><!--Original XRef content: 'Menu Button Widget (DtMenuButton)89'--><XRef Role="JumpText" Linkend="PG.widgs.mkr.13"></Para></Entry>
</Row>
<Row Rowsep="1">
<Entry><Para><!--Original XRef content: 'Text Editor Widget (DtEditor)94'--><XRef Role="JumpText" Linkend="PG.widgs.mkr.17"></Para></Entry>
</Row>
</TBody>
</TGroup>
</InformalTable>
<Para>The<IndexTerm>
<Primary>widget</Primary>
<Secondary>library</Secondary>
</IndexTerm><IndexTerm>
<Primary>library</Primary>
<Secondary>widget</Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>libDtWidget&lt;Default Para Font> library</Primary>
</IndexTerm><IndexTerm>
<Primary>library</Primary>
<Secondary>&lt;Filename>libDtWidget&lt;Default Para Font></Secondary>
</IndexTerm>
widget library, <Command>libDtWidget</Command>, contains two widgets that have now been superseded by Motif 2.1 widgets,
and two widgets that enhance functionality of Motif 2.1 widgets:</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para><Command><IndexTerm>
<Primary>&lt;Filename>DtSpinBox&lt;Default Para Font> widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>&lt;Filename>DtSpinBox&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>text field and arrow button</Secondary>
</IndexTerm><IndexTerm>
<Primary>text field and arrow button widget</Primary>
</IndexTerm><IndexTerm>
<Primary>arrow button and text field widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>arrow button and text field</Secondary>
</IndexTerm>DtSpinBox</Command> combines a text field and arrow buttons in a control that can
increment or decrement numeric or text values.
It has been superseded by <Command>XmSimpleSpinBox</Command>.</Para>
</ListItem>
<ListItem>
<Para><Command><IndexTerm>
<Primary>&lt;Filename>DtComboBox&lt;Default Para Font> widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>&lt;Filename>DtComboBox&lt;Default Para Font>,widget</Secondary>
<Tertiary>text field and list box</Tertiary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>list box and text field</Secondary>
</IndexTerm><IndexTerm>
<Primary>list box and text field widget</Primary>
</IndexTerm><IndexTerm>
<Primary>text field and list box widget</Primary>
</IndexTerm>DtComboBox</Command> combines a text field and a list box in a control that displays
one of the many valid choices for the text field.
It has been superseded by <Command>XmComboBox</Command></Para>
</ListItem>
<ListItem>
<Para><Command><IndexTerm>
<Primary>&lt;Filename>DtMenuButton&lt;Default Para Font> widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>&lt;Filename>DtMenuButton&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>menu widget, pop-up</Primary>
</IndexTerm><IndexTerm>
<Primary>pop-up menu widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>pop-up menu</Secondary>
</IndexTerm>DtMenuButton</Command> provides<IndexTerm>
<Primary>menu cascading functionality</Primary>
</IndexTerm><IndexTerm>
<Primary>cascading menu functionality</Primary>
</IndexTerm><IndexTerm>
<Primary>functionality</Primary>
<Secondary>cascading menu</Secondary>
</IndexTerm>
menu-cascading functionality outside of the menu
bar.</Para>
</ListItem>
<ListItem>
<Para><Command><IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font> widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>text editor</Secondary>
</IndexTerm><IndexTerm>
<Primary>text editor widget</Primary>
</IndexTerm><IndexTerm>
<Primary>editor widget</Primary>
</IndexTerm>DtEditor</Command> incorporates such single text editor functions as cut and paste.</Para>
</ListItem>
</ItemizedList>
<Para>These widgets provide common functionality across all Common Desktop
Environment applications. None of these widgets support subclassing.</Para>
<Para>The Custom Widgets library depends directly on the following libraries:</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para><Command>Xm</Command> library for the Motif superclass support</Para>
</ListItem>
<ListItem>
<Para><Command>Xt</Command> library for creation and manipulation of widgets</Para>
</ListItem>
<ListItem>
<Para><Command>X11</Command> Library for the base X Window System</Para>
</ListItem>
<ListItem>
<Para><Command>DtSvc</Command> for desktop support utilized by <Command>DtEditor</Command></Para>
</ListItem>
</ItemizedList>
<Sect1 Id="PG.widgs.div.2">
<Title Id="PG.widgs.mkr.2">Using Motif in the Common Desktop Environment</Title>
<Para>The<IndexTerm>
<Primary>CDE Motif toolkit</Primary>
</IndexTerm><IndexTerm>
<Primary>Motif toolkit</Primary>
</IndexTerm><IndexTerm>
<Primary>toolkit, Motif</Primary>
</IndexTerm>
The Common Desktop Environment includes Motif 2.1, plus
four custom widgets. The custom widgets are described in detail in this
chapter.</Para>
<Para>The Common Desktop Environment is source and binary compatible with
Motif 1.2 applications. Existing Motif 1.2 applications will compile using
Motif 2.1 include files. Existing Motif 1.2 binaries will run without
modification using Motif 2.1 libraries.</Para>
<Sect2 Id="PG.widgs.div.3">
<Title>Motif Libraries<IndexTerm>
<Primary>Motif libraries</Primary>
</IndexTerm><IndexTerm>
<Primary>library</Primary>
<Secondary>Motif</Secondary>
</IndexTerm></Title>
<Para>Use the Motif 2.1 and X11R6.2 libraries to develop a
Common Desktop Environment Motif-compliant application for the X Window
System.</Para>
<Sect3 Id="PG.widgs.div.4">
<Title>Motif Library (libXm)</Title>
<Para>Common Desktop Environment provides all the<IndexTerm>
<Primary>Motif header files</Primary>
</IndexTerm><IndexTerm>
<Primary>header files</Primary>
<Secondary>Motif</Secondary>
</IndexTerm>
Motif 2.1 header files.</Para>
</Sect3>
<Sect3 Id="PG.widgs.div.5">
<Title>Motif UIL Library (libUil)<IndexTerm>
<Primary>Motif UIL library</Primary>
</IndexTerm><IndexTerm>
<Primary>library</Primary>
<Secondary>Motif UIL</Secondary>
</IndexTerm><IndexTerm>
<Primary>library</Primary>
<Secondary>&lt;Filename>libUil&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>libUil&lt;Default Para Font></Primary>
</IndexTerm></Title>
<Para>The Motif User Interface Language (UIL) is a specification language for
describing the initial state of a Motif application's user interface.</Para>
<Para>Include the<IndexTerm>
<Primary>header files</Primary>
<Secondary>Motif UIL library</Secondary>
</IndexTerm><IndexTerm>
<Primary>Motif UIL library</Primary>
<Secondary>header file</Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>UilDef.h&lt;Default Para Font>header files</Primary>
<Secondary>&lt;Filename>Uil.Def.h&lt;Default Para Font></Secondary>
</IndexTerm>
<Filename>uil/UilDef.h</Filename> header file to access UIL.</Para>
</Sect3>
<Sect3 Id="PG.widgs.div.6">
<Title>Motif Resource Manager Library (libMrm)<IndexTerm>
<Primary>Motif resource manager library</Primary>
</IndexTerm><IndexTerm>
<Primary>library</Primary>
<Secondary>Motif resource manager</Secondary>
</IndexTerm><IndexTerm>
<Primary>library</Primary>
<Secondary>&lt;Filename>libMrm&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>libMrm&lt;Default Para Font> library</Primary>
</IndexTerm></Title>
<Para>The Motif Resource Manager (MRM) creates widgets based on definitions
contained in User Interface Definition (UID) files created by the UIL compiler.
MRM interprets the output of the UIL compiler and generates the appropriate
argument lists for widget creation functions. Use <Command>libMrm</Command> to access the Motif
Resource Manager.</Para>
<Para>Include the<IndexTerm>
<Primary>Motif resource manager header file</Primary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>MrmPublic.h&lt;Default Para Font> header file</Primary>
</IndexTerm><IndexTerm>
<Primary>header files&lt;Filename>MrmPublic.h&lt;Default Para Font></Primary>
</IndexTerm>
<Filename>Mrm/MrmPublic.h</Filename> header files to access <Command>libMrm</Command> in your
application.</Para>
</Sect3>
</Sect2>
<Sect2 Id="PG.widgs.div.8">
<Title>Usability Enhancements<IndexTerm>
<Primary>usability enhancements</Primary>
</IndexTerm><IndexTerm>
<Primary>enhancements</Primary><Secondary>usability</Secondary>
</IndexTerm></Title>
<Para>Motif 2.1 contains minor enhancements
to enable better usability by OPEN LOOK and Microsoft Windows
users. The usability enhancements include:</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para>Enabling button two on a three-button mouse to be used to extend the
current selection. This functionality is equivalent to the<IndexTerm>
<Primary>OPEN LOOK</Primary>
<Secondary>mouse functionality</Secondary>
</IndexTerm><IndexTerm>
<Primary>mouse functionality, OPEN LOOK</Primary>
</IndexTerm>
OPEN LOOK
ADJUST mouse button.</Para>
</ListItem>
<ListItem>
<Para>Enabling<IndexTerm>
<Primary>tab navigation</Primary>
</IndexTerm><IndexTerm>
<Primary>navigation, tab</Primary>
</IndexTerm>
Tab to be used to move through a group of <Command>PushButton</Command> widgets
and gadgets, <Command>ArrowButton</Command> widgets and gadgets, and <Command>DrawnButton</Command>
widgets.</Para>
</ListItem>
<ListItem>
<Para>Enabling button 3 to activate a <Command>CascadeButton</Command> menu.</Para>
</ListItem>
<ListItem>
<Para>Providing three new resources (<Command>pathMode, fileFilterStyle,</Command> and <Command>dirTextLabelString</Command>) for the <Command><IndexTerm>
<Primary>&lt;Filename>XmFileSelectionBox&lt;Default Para Font> widget resources</Primary>
</IndexTerm><IndexTerm>
<Primary>resources</Primary>
<Secondary>&lt;Filename>XmFileSelectionBox&lt;Default Para Font> widget</Secondary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>&lt;Filename>XmFileSelectionBox&lt;Default Para Font></Secondary>
</IndexTerm>XmFileSelectionBox</Command> widget, which
gives it a new look and feel. See the <Emphasis>Common Desktop Environment:
Programmer's Overview</Emphasis> for details about the new <Command>XmFileSelectionBox</Command>
resources.</Para>
</ListItem>
<ListItem>
<Para>Enabling interoperability with Microsoft Windows and OPEN LOOK by
providing multiple key bindings for Motif virtual keys.</Para>
</ListItem>
</ItemizedList>
<Para>Each of the preceding enhancements can be controlled by a resource: either a
widget resource (for <Command>XmFileSelectionBox</Command>) or an application-wide resource
(all other cases). The default values for this resource provide behavior and an
API that is identical to that of Motif 1.2. For information on these
enhancements and resources, see the <Filename>XmDisplay(3x)</Filename> and <Command>XmFileSelectionBox(3x)</Command> man pages.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.9">
<Title>Visual Enhancements<IndexTerm>
<Primary>Motif visual enhancements</Primary>
</IndexTerm><IndexTerm>
<Primary>visual enhancements, Motif</Primary>
</IndexTerm><IndexTerm>
<Primary>enhancements, visual Motif</Primary>
</IndexTerm></Title>
<Para>Common Desktop Environment changes the default Motif look in the
following ways:</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para><Command>RadioBox</Command> fill color is changed to show state more clearly.</Para>
</ListItem>
<ListItem>
<Para><Command>RadioBox</Command> shape is changed from diamond to circular.</Para>
</ListItem>
<ListItem>
<Para>A check glyph is added to the <Command>CheckBox</Command> to show state more clearly.</Para>
</ListItem>
<ListItem>
<Para><Command>CascadeButtons</Command> and menu items are changed to have an etched-in border
when active.</Para>
</ListItem>
<ListItem>
<Para>Thumb is removed from the read-only Scale to distinguish it from the Scale.</Para>
</ListItem>
<ListItem>
<Para>Default shadow thickness is changed to 1 pixel.</Para>
</ListItem>
<ListItem>
<Para>Default highlight thickness is changed to 1 pixel.</Para>
</ListItem>
<ListItem>
<Para>Default <Command>PushButton</Command> visual draws the highlight inside the button's default
shadow.</Para>
</ListItem>
</ItemizedList>
<Para>An application-wide resource can control each of these enhancements. The
default Motif 2.1 values for these resources provide behavior and an API that is identical
to that of Motif 1.2.</Para>
<Para>For information on these enhancements, see the <Filename MoreInfo="RefEntry">XmDisplay</Filename>(3),
<Filename MoreInfo="RefEntry">XmPushButton</Filename>(3), <Filename MoreInfo="RefEntry">XmPushButtonGadget</Filename>(3), <Filename MoreInfo="RefEntry">XmToggleButton</Filename>(3),
<Filename MoreInfo="RefEntry">XmToggleButtonGadget</Filename>(3), and <Filename MoreInfo="RefEntry">XmScale</Filename>(3) man pages.</Para>
</Sect2>
</Sect1>
<Sect1 Id="PG.widgs.div.10">
<Title Id="PG.widgs.mkr.3">Text Field and Arrow Button Widget (DtSpinBox<Filename>)</Filename><IndexTerm>
<Primary>text field and arrow button widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>text field and arrow button</Secondary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>arrow button and text field</Secondary>
</IndexTerm><IndexTerm>
<Primary>widget&lt;Filename>DtSpinBox&lt;Default Para Font></Primary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>DtSpinBox&lt;Default Para Font> widget</Primary>
</IndexTerm></Title>
<Para>Use the <Command>DtSpinBox</Command> for<IndexTerm>
<Primary>cycle widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>cycle</Secondary>
</IndexTerm>
cycling through a list of text items or incrementing and
decrementing a numeric entry. <Command>DtSpinBox</Command> is a subclass of the <Command>XmManager</Command>
class and is used to display a text field and two arrows.</Para>
<Para>The <Command>DtSpinBox</Command> widget is a user interface control used to<IndexTerm>
<Primary>increment/decrement widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>increment/decrement</Secondary>
</IndexTerm><IndexTerm>
<Primary>decrement/increment widget</Primary>
</IndexTerm>
increment and
decrement an arbitrary text or numeric field. You can use it, for example, to
cycle through the months of the year or days of the month.
<!--Original XRef content: 'Figure&numsp;7&hyphen;1'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.4"> shows
examples of the <Command>DtSpinBox</Command> widget.</Para>
<Figure>
<Title Id="PG.widgs.mkr.4">Examples of the DtSpinBox widget<IndexTerm>
<Primary>&lt;Filename>DtSpinBox&lt;Default Para Font> widget, illustration</Primary>
</IndexTerm></Title>
<Graphic Entityref="PG.widgs.fig.1" Id="PG.widgs.grph.1"></Graphic>
</Figure>
<Sect2 Id="PG.widgs.div.11">
<Title>Library and Header Files<IndexTerm>
<Primary>header file</Primary>
<Secondary>&lt;Filename>Dt/SpinBox.h&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>Dt/SpinBox.h&lt;Default Para Font> header file</Primary>
</IndexTerm><IndexTerm>
<Primary>library</Primary>
<Secondary>&lt;Filename>libDtWidget&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>libDtWidget&lt;Default Para Font> library</Primary>
</IndexTerm></Title>
<Para>The <Command>DtSpinBox</Command> widget is in the <Command><IndexTerm>
<Primary>widget</Primary>
<Secondary>&lt;Filename>libDtWidget&lt;Default Para Font> library</Secondary>
</IndexTerm>libDtWidget</Command> library. The header file is
<Filename>Dt/SpinBox.h</Filename>.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.12">
<Title>Demo Program<IndexTerm>
<Primary>widget</Primary>
<Secondary>demo program</Secondary>
</IndexTerm><IndexTerm>
<Primary>demo program</Primary>
<Secondary>widgets</Secondary>
</IndexTerm></Title>
<Para>A demo containing an example of the <Command>DtSpinBox</Command> widget is in
<Filename>/usr/dt/examples/dtwidget/controls.c</Filename>.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.13">
<Title>Moving to XmSimpleSpinBox<IndexTerm>
<Primary>compatibility</Primary>
<Secondary>Motif 2.1 &lt;Filename>XmSimpleSpinBox&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>DtSpinBox&lt;Default Para Font>, compatibility with Motif 2.1</Primary>
</IndexTerm></Title>
<Para>To use the Motif 2.1 <Command>DtSimpleSpinBox</Command> widget, change the <Command>Dt</Command> names for the class, types, and
creation routines to <Command>Xm</Command>, and change <Command>SpinBox</Command> to <Command>SimpleSpinBox</Command>. For example, change all occurrences of <Command>DtSpinBox</Command> to
<Command>XmSimpleSpinBox</Command> in your code. Alternatively, you can compile
your existing code with <Symbol>-DDT_USE_XM_SSPINBOX</Symbol>.
This information is supplied in case you choose to
revise your CDE 1.0 application to use the Motif 2.1 widget.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.14">
<Title>Convenience Functions<IndexTerm>
<Primary>convenience functions</Primary>
<Secondary>&lt;Filename>DtSpinBox&lt;Default Para Font> widget</Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>DtSpinBox&lt;Default Para Font></Primary>
<Secondary>convenience functions</Secondary>
</IndexTerm></Title>
<Para><!--Original XRef content: 'Table&numsp;7&hyphen;1'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.5"> lists the convenience functions for the <Command>DtSpinBox</Command> widget. See the
<Filename MoreInfo="RefEntry">DtSpinBox</Filename>(3) man page for more information.</Para>
<Table Id="PG.widgs.tbl.1" Frame="Topbot">
<Title Id="PG.widgs.mkr.5">DtSpinBox Convenience Functions</Title>
<TGroup Cols="2">
<ColSpec Colname="1" Colwidth="2.0 in">
<ColSpec Colname="2" Colwidth="3.0 in">
<THead>
<Row>
<Entry><Para><Literal>Function</Literal></Para></Entry>
<Entry><Para><Literal>Description</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Filename>DtCreateSpinBox()</Filename></Para></Entry>
<Entry><Para>Creates a SpinBox widget.</Para></Entry>
</Row>
<Row>
<Entry><Para><Filename>DtSpinBoxAddItem()</Filename></Para></Entry>
<Entry><Para>Adds an item into a <Command>DtSpinBox</Command> widget at a
specified location.</Para></Entry>
</Row>
<Row>
<Entry><Para><Filename>DtSpinBoxDeletePos()</Filename></Para></Entry>
<Entry><Para>Deletes a specified item from a <Command>DtSpinBox</Command>
widget.</Para></Entry>
</Row>
<Row>
<Entry><Para><Filename>DtSpinBoxSetItem()</Filename></Para></Entry>
<Entry><Para>Sets the current item in a <Command>DtSpinBox</Command> widget.</Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect2>
<Sect2 Id="PG.widgs.div.15">
<Title>Classes<IndexTerm>
<Primary>&lt;Filename>DtSpinBox&lt;Default Para Font></Primary>
<Secondary>classes</Secondary>
</IndexTerm><IndexTerm>
<Primary>classes</Primary>
<Secondary>&lt;Filename>DtSpinBox&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para><Command>DtSpinBoxWidget</Command> inherits behavior and resources from the <Command>Core</Command>,
<Command>Composite</Command>, <Command>Constraint</Command>, and <Command>XmManager</Command> classes.</Para>
<Para>The class pointer is <Command>dtSpinBoxWidgetClass</Command>.</Para>
<Para>The class name is <Command>DtSpinBoxWidget</Command>.</Para>
<Para><Command>DtSpinBoxWidget</Command> does not support subclassing.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.16">
<Title>Resources<IndexTerm>
<Primary>resources</Primary>
<Secondary>&lt;Filename>DtSpinBox&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>DtSpinBox&lt;Default Para Font></Primary>
<Secondary>resources</Secondary>
</IndexTerm></Title>
<Para>The <Command>DtSpinBox</Command> widget defines the following set of widget resources.
<!--Original XRef content: 'Table&numsp;7&hyphen;2'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.6">
lists the class, type, default, and access for each resource.</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para><Command>DtNarrowLayout</Command> specifies the style and position of the <Command>DtSpinBox</Command>
arrows.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNarrowSensitivity</Command> specifies the sensitivity of the arrows in the
<Command>DtSpinBox</Command>.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNspinBoxChildType</Command> specifies the style of the <Command>DtSpinBox</Command>.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNdecimalPoints</Command> specifies the position of the decimal point within the
integer value when the child type is numeric.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNincrementValue</Command> specifies the amount to increment or decrement the
position when the child type is numeric.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNinitialDelay</Command> specifies the amount of time in milliseconds before the
arrow buttons begin to spin continuously.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNnumValues</Command> specifies the number of items in the <Command>DtNvalues</Command> list when
the child type is a string.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNvalues</Command> supplies the list of strings to cycle through when the child type
resource is a string.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNmaximumValue</Command> specifies the upper bound on the <Command>DtSpinBox</Command> range
when the child type is numeric.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNminimumValue</Command> specifies the lower bound on the <Command>DtSpinBox</Command> range
when the child type is numeric.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNmodifyVerifyCallback</Command> is called just before the <Command>DtSpinBox</Command> position
changes. The application can use this callback to implement new
application-related logic, including setting a new position, spinning to, or
canceling the impending action.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNposition</Command> has a different value based on the child type resource. When
the child type is a string, <Command>DtNposition</Command> is the index into the <Command>DtNvalues</Command> list
for the current item. When the child type is numeric, <Command>DtNposition</Command> is the
integer value of the <Command>DtSpinBox</Command> that falls within the maximum and
minimum value range.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNrepeatDelay</Command> is the number of milliseconds between repeated calls to
the <Command>DtNvalueChangedCallback</Command> while the user is spinning the
<Command>DtSpinBox</Command>.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNvalueChangedCallback</Command> is called whenever the value of the
<Command>DtNposition</Command> resource is changed through the use of the spinner arrows.</Para>
</ListItem>
</ItemizedList>
<Para>See the <Filename MoreInfo="RefEntry">DtSpinBox</Filename>(3) man page for more information.</Para>
<Table Id="PG.widgs.tbl.2" Frame="Topbot">
<Title Id="PG.widgs.mkr.6"><Command>DtSpinBoxWidget</Command> Resources</Title>
<TGroup Cols="5">
<ColSpec Colname="1" Colwidth="1.96865 in">
<ColSpec Colname="2" Colwidth="1.58095 in">
<ColSpec Colname="3" Colwidth="1.375 in">
<ColSpec Colname="4" Colwidth="1.5 in">
<ColSpec Colname="5" Colwidth="0.57103 in">
<THead>
<Row>
<Entry><Para><Literal>Name</Literal></Para></Entry>
<Entry><Para><Literal>Class</Literal></Para></Entry>
<Entry><Para><Literal>Type</Literal></Para></Entry>
<Entry><Para><Literal>Default</Literal></Para></Entry>
<Entry><Para><Literal>Access</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Command>DtNarrowLayout</Command></Para></Entry>
<Entry><Para><Command>DtCArrowLayout</Command></Para></Entry>
<Entry><Para><Command>unsigned char</Command></Para></Entry>
<Entry><Para><Filename>DtARROWS_END</Filename></Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNarrowSensitivity</Command></Para></Entry>
<Entry><Para><Command>DtCArrowSensitivity</Command></Para></Entry>
<Entry><Para><Command>unsigned char</Command></Para></Entry>
<Entry><Para><Filename>DtARROWS_SENSITIVE</Filename></Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNspinBoxChildType</Command></Para></Entry>
<Entry><Para><Command>DtCSpinBoxChildType</Command></Para></Entry>
<Entry><Para><Command>unsigned char</Command></Para></Entry>
<Entry><Para><Command>DtSTRING</Command></Para></Entry>
<Entry><Para>CG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNdecimalPoints</Command></Para></Entry>
<Entry><Para><Command>DtCDecimalPoints</Command></Para></Entry>
<Entry><Para><Command>short</Command></Para></Entry>
<Entry><Para><Filename>0</Filename></Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNincrementValue</Command></Para></Entry>
<Entry><Para><Command>DtCIncrementValue</Command></Para></Entry>
<Entry><Para><Command>int</Command></Para></Entry>
<Entry><Para><Filename>1</Filename></Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNinitialDelay</Command></Para></Entry>
<Entry><Para><Command>DtCInitialDelay</Command></Para></Entry>
<Entry><Para><Command>unsigned int</Command></Para></Entry>
<Entry><Para><Command>250 ms</Command></Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNnumValues</Command></Para></Entry>
<Entry><Para><Command>DtCNumValues</Command></Para></Entry>
<Entry><Para><Command>int</Command></Para></Entry>
<Entry><Para><Filename>0</Filename></Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNvalues</Command></Para></Entry>
<Entry><Para><Command>DtCValues</Command></Para></Entry>
<Entry><Para><Command>XmStringTable</Command></Para></Entry>
<Entry><Para><Command>NULL</Command></Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNmaximumValue</Command></Para></Entry>
<Entry><Para><Command>DtCMaximumValue</Command></Para></Entry>
<Entry><Para><Command>int</Command></Para></Entry>
<Entry><Para><Filename>10</Filename></Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNminimumValue</Command></Para></Entry>
<Entry><Para><Command>DtCMinimumValue</Command></Para></Entry>
<Entry><Para><Command>int</Command></Para></Entry>
<Entry><Para><Filename>0</Filename></Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNmodifyVerifyCallback</Command></Para></Entry>
<Entry><Para><Command>DtCCallback</Command></Para></Entry>
<Entry><Para><Command>XtCallbackList</Command></Para></Entry>
<Entry><Para><Command>NULL</Command></Para></Entry>
<Entry><Para>C</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNposition</Command></Para></Entry>
<Entry><Para><Command>DtCPosition</Command></Para></Entry>
<Entry><Para><Command>int</Command></Para></Entry>
<Entry><Para><Filename>0</Filename></Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNrepeatDelay</Command></Para></Entry>
<Entry><Para><Command>DtCRepeatDelay</Command></Para></Entry>
<Entry><Para><Command>unsigned int</Command></Para></Entry>
<Entry><Para><Command>200 ms</Command></Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNvalueChangedCallback</Command></Para></Entry>
<Entry><Para><Command>DtCCallback</Command></Para></Entry>
<Entry><Para><Command>XtCallbackList</Command></Para></Entry>
<Entry><Para><Command>NULL</Command></Para></Entry>
<Entry><Para>C</Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect2>
<Sect2 Id="PG.widgs.div.17">
<Title>Callback Structures<IndexTerm>
<Primary>&lt;Filename>DtSpinBox&lt;Default Para Font></Primary>
<Secondary>callback structures</Secondary>
</IndexTerm><IndexTerm>
<Primary>callback structures</Primary>
<Secondary>&lt;Filename>DtSpinBox&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The callback structure follows and is described in
<!--Original XRef content: 'Table&numsp;7&hyphen;3'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.7">.</Para>
<ProgramListing>typedef struct {
 int  <Symbol Role="Variable">reason</Symbol>;
 XEvent <Symbol Role="Variable">*event</Symbol>;
 Widget <Symbol Role="Variable">widget</Symbol>;
 Boolean <Symbol Role="Variable">doit</Symbol>;
 int <Symbol Role="Variable">position</Symbol>;
 XmString <Symbol Role="Variable">value</Symbol>;
 Boolean <Symbol Role="Variable">crossed_boundary</Symbol>;
} DtSpinBoxCallbackStruct;
</ProgramListing>
<Table Id="PG.widgs.tbl.3" Frame="Topbot">
<Title><Command Id="PG.widgs.mkr.7"></Command>DtSpinBox Callbacks</Title>
<TGroup Cols="2">
<ColSpec Colname="1" Colwidth="1.47818 in">
<ColSpec Colname="2" Colwidth="3.54168 in">
<THead>
<Row>
<Entry><Para><Literal>Callback</Literal></Para></Entry>
<Entry><Para><Literal>Description</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Symbol Role="Variable">reason</Symbol></Para></Entry>
<Entry><Para>Use this callback for three possible reasons. For the first call
to the callback at the beginning of a spin, or for a single
activation of the spin arrows, <Filename>DtCR_OK</Filename> is the reason. If the
<Command>DtSpinBox</Command> is being continuously spun, the reason is
<Filename>DtCR_SPIN_NEXT</Filename> or <Filename>DtCR_SPIN_PRIOR</Filename>, depending on
the arrow that is spinning.</Para></Entry>
</Row>
<Row>
<Entry><Para><Symbol Role="Variable">event</Symbol></Para></Entry>
<Entry><Para>A pointer to the event that caused this callback to be
invoked. It can be <Command>NULL</Command> when the <Command>DtSpinBox</Command> is
continuously spinning.</Para></Entry>
</Row>
<Row>
<Entry><Para><Symbol Role="Variable">widget</Symbol></Para></Entry>
<Entry><Para>The widget identifier for the text widget that is affected by
the spin.</Para></Entry>
</Row>
<Row>
<Entry><Para><Symbol Role="Variable">doit</Symbol></Para></Entry>
<Entry><Para>Sets this value only when the <Filename>call_data</Filename> comes from the
<Command>DtNmodifyVerifyCallback</Command>. For a modifyVerify callback,
the setting of this field by an application determines
whether the action that initiated the callback should be
performed. When this field is set to <Command>False</Command>, the action is not
performed.</Para></Entry>
</Row>
<Row>
<Entry><Para><Symbol Role="Variable">position</Symbol></Para></Entry>
<Entry><Para>The new value of the <Command>DtNposition</Command> resource that results
from the spin.</Para></Entry>
</Row>
<Row>
<Entry><Para><Symbol Role="Variable">value</Symbol></Para></Entry>
<Entry><Para>The new <Command>XmString</Command> value displayed in the Text widget that
results from the spin. This string must be copied if it is used
beyond the scope of the <Filename>call_data</Filename> structure.</Para></Entry>
</Row>
<Row>
<Entry><Para><Symbol Role="Variable">crossed_boundary</Symbol></Para></Entry>
<Entry><Para>This Boolean is True when the spinbox cycles, and/or
<Command>DtNspinBoxChildType</Command> of <Command>XmSTRING</Command> wraps from the first
item to the last or the last item to the first. When the
<Command>DtNspinBoxChildType</Command> is <Command>XmNUMERIC</Command>, the boundary is
crossed when the <Command>DtSpinBox</Command> cycles from the maximum
value to the minimum value or vice versa.</Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect2>
<Sect2 Id="PG.widgs.div.18">
<Title>Example of DtSpinBox Widget<IndexTerm>
<Primary>&lt;Filename>DtSpinBox&lt;Default Para Font></Primary>
<Secondary>example code</Secondary>
</IndexTerm><IndexTerm>
<Primary>code example</Primary>
<Secondary>&lt;Filename>DtSpinBox&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The following example shows how to create and use a <Command>DtSpinBox</Command> widget. You
can find this code as part of the <Filename>controls.c</Filename> demo in the <Command>/usr/dt/examples/dtwidget</Command> directory.</Para>
<ProgramListing>/*
 * Example code for SpinBox
 */

#include &lt;Dt/SpinBox.h>

static char *spinValueStrings[] = {
 &ldquo;alpha&rdquo;, &ldquo;beta&rdquo;, &ldquo;gamma&rdquo;, &ldquo;delta&rdquo;,
 &ldquo;epsilon&rdquo;, &ldquo;zeta&rdquo;, &ldquo;eta&rdquo;, &ldquo;theta&rdquo;,
 &ldquo;iota&rdquo;, &ldquo;kappa&rdquo;, &ldquo;lambda&rdquo;, &ldquo;mu&rdquo;,
 &ldquo;nu&rdquo;, &ldquo;xi&rdquo;, &ldquo;omicron&rdquo;, &ldquo;pi&rdquo;,
 &ldquo;rho&rdquo;, &ldquo;sigma&rdquo;, &ldquo;tau&rdquo;, &ldquo;upsilon&rdquo;,
 &ldquo;phi&rdquo;, &ldquo;chi&rdquo;, &ldquo;psi&rdquo;, &ldquo;omega&rdquo;
};

static void ModifyVerifyCb(Widget, XtPointer, XtPointer);

static void CreateSpinBoxes(Widget parent)
{
    Widget titleLabel, spinBox;
    XmString *valueXmstrings;
    int numValueStrings;
    XmString labelString;
    Arg args[20];
    int i, n;

    /* Create value compound strings */

    numValueStrings = XtNumber(spinValueStrings);
 valueXmstrings = (XmString *)XtMalloc(numValueStrings
 sizeof(XmString*));
 for (i = 0; i &lt; numValueStrings; i++) {
  valueXmstrings[i] =
   XmStringCreateLocalized(spinValueStrings[i]);
    }

    /* Create title label */

    labelString = XmStringCreateLocalized(&ldquo;SpinBox Widget&rdquo;);
    n = 0;
    XtSetArg(args[n], XmNlabelString, labelString); n++;
    titleLabel = XmCreateLabel(parent, &ldquo;title&rdquo;, args, n);
    XtManageChild(titleLabel);
    XmStringFree(labelString);

 /*
 * Create a SpinBox containing string values.
 */

    n = 0;
    XtSetArg(args[n], DtNvalues, valueXmstrings); n++;
    XtSetArg(args[n], DtNnumValues, numValueStrings); n++;
    XtSetArg(args[n], DtNcolumns, 10); n++;
    spinBox = DtCreateSpinBox(parent, &ldquo;spinBox1&rdquo;, args, n);
    XtManageChild(spinBox);

    /*
  * Create a SpinBox containing numeric values to 3 decimal places.
  * Position the arrows on either side of the displayed value.
  */

    n = 0;
    XtSetArg(args[n], DtNspinBoxChildType, DtNUMERIC); n++;
    XtSetArg(args[n], DtNminimumValue, 1000); n++;
    XtSetArg(args[n], DtNmaximumValue, 100000); n++;
    XtSetArg(args[n], DtNincrementValue,1000); n++;
    XtSetArg(args[n], DtNdecimalPoints,3); n++;
    XtSetArg(args[n], DtNposition,1000); n++;
    XtSetArg(args[n], DtNarrowLayout,DtARROWS_SPLIT); n++;
    XtSetArg(args[n], DtNcolumns, 10); n++;
    spinBox = DtCreateSpinBox(parent, &ldquo;spinBox2&rdquo;, args, n);
    XtManageChild(spinBox);

    /*
* Create a SpinBox containing numeric values to 2 decimal places.
* Position the arrows on the left of the displayed value.
* Disallow alternate user changes by adding a modify/verify
 callback.
    */

    n = 0;
    XtSetArg(args[n], DtNspinBoxChildType, DtNUMERIC); n++;
    XtSetArg(args[n], DtNminimumValue, 1500); n++;
    XtSetArg(args[n], DtNmaximumValue, 60500); n++;
    XtSetArg(args[n], DtNincrementValue,1500); n++;
    XtSetArg(args[n], DtNdecimalPoints,2); n++;
    XtSetArg(args[n], DtNposition,7500); n++
 XtSetArg(args[n], DtNarrowLayout,DtARROWS_FLAT_BEGINNING); n++;
    XtSetArg(args[n], DtNcolumns, 10); n++;
    spinBox = DtCreateSpinBox(parent, &ldquo;spinBox3&rdquo;, args, n);
    XtManageChild(spinBox);

    XtAddCallback(spinBox, DtNmodifyVerifyCallback, ModifyVerifyCb,
 NULL);

 /*
 * Create a SpinBox containing string values.
 * Position the arrows on the left of the display value
 */

    n = 0;
    XtSetArg(args[n], DtNvalues, valueXmstrings); n++;
    XtSetArg(args[n], DtNnumValues, numValueStrings); n++;
    XtSetArg(args[n], DtNarrowLayout, DtARROWS_BEGINNING); n++;
    XtSetArg(args[n], DtNcolumns, 10); n++;
    spinBox = DtCreateSpinBox(parent, &ldquo;spinBox4&rdquo;, args, n);
    XtManageChild(spinBox);

   /*
   * Create a SpinBox containing numeric values to 3 decimal places.
   * Position the arrows on the right of the displayed value.
   */

    n = 0;
    XtSetArg(args[n], DtNspinBoxChildType, DtNUMERIC); n++;
    XtSetArg(args[n], DtNminimumValue, 1000); n++;
    XtSetArg(args[n], DtNmaximumValue, 100000); n++;
    XtSetArg(args[n], DtNincrementValue,1000); n++;
    XtSetArg(args[n], DtNdecimalPoints,3); n++;
    XtSetArg(args[n], DtNposition,1000); n++;
    XtSetArg(args[n], DtNarrowLayout, DtARROWS_FLAT_END); n++;
    XtSetArg(args[n], DtNcolumns, 10); n++;
    spinBox = DtCreateSpinBox(parent, &ldquo;spinBox5&rdquo;, args, n);
    XtManageChild(spinBox);

    /*
     * Free value strings, SpinBox has taken a copy.
     */

    for (i = 0; i &lt; numValueStrings; i++) {
  XmStringFree(valueXmstrings[i]);
    }
    XtFree((char*)valueXmstrings);

}

 /*
 * modify/verify callback.
 *
  * Allow/disallow alternate user changes
  */

static void ModifyVerifyCb(Widget w, XtPointer cd, XtPointer cb)
{
    DtSpinBoxCallbackStruct *scb= (DtSpinBoxCallbackStruct*)cb;
    static Boolean allowChange = True;

    scb->doit = allowChange;

    if (allowChange == False) {
 printf(&ldquo;DtSpinBox: DtNmodifyVerifyCallback.
Change disallowed.\n&rdquo;);
 XBell(XtDisplay(w), 0);
    }

    allowChange = (allowChange == True) ? False: True;
}</ProgramListing>
</Sect2>
</Sect1>
<Sect1 Id="PG.widgs.div.19">
<Title Id="PG.widgs.mkr.8">Text Field and List Box Widget (DtComboBox)<IndexTerm>
<Primary>text field and list box widget</Primary>
</IndexTerm><IndexTerm>
<Primary>list box and text field widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>text field and list box</Secondary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>list box and text field</Secondary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>&lt;Filename>DtComboBox&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>DtComboBox&lt;Default Para Font> widget</Primary>
</IndexTerm></Title>
<Para>Use the <Command>DtComboBox</Command> widget to display a list and the current selection from the
list. You can use this widget for display only, or as a selectable control.</Para>
<Para>The <Command>DtComboBox</Command> widget is a combination of a text field and a list widget that
provides a list of valid choices for the text field. Selecting an item from this list
automatically fills in the text field with that list item.
<!--Original XRef content: 'Figure&numsp;7&hyphen;2'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.14"> shows
examples of a <Command>DtComboBox</Command> widget.</Para>
<Figure>
<Title Id="PG.widgs.mkr.9">Examples of text field and list box widget (DtComboBox)<IndexTerm>
<Primary>&lt;Filename>DtComboBox&lt;Default Para Font></Primary>
<Secondary>illustration</Secondary>
</IndexTerm><IndexTerm>
<Primary>illustration</Primary>
<Secondary>&lt;Filename>DtComboBox&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Graphic Entityref="PG.widgs.fig.2" Id="PG.widgs.grph.2"></Graphic>
<Graphic Entityref="PG.widgs.fig.4" Id="PG.widgs.grph.4"></Graphic>
</Figure>
<Sect2 Id="PG.widgs.div.20">
<Title>Library and Header Files<IndexTerm>
<Primary>header files</Primary>
<Secondary>&lt;Filename>DtComboBox&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>DtComboBox&lt;Default Para Font></Primary>
<Secondary>header file</Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>DtComboBox&lt;Default Para Font></Primary>
<Secondary>library</Secondary>
</IndexTerm><IndexTerm>
<Primary>library</Primary>
<Secondary>&lt;Filename>libDtWidget&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>libDtWidget&lt;Default Para Font> library</Primary>
</IndexTerm></Title>
<Para>The <Command>DtComboBox</Command> widget is in the <Command>libDtWidget</Command> library. The header file is
<Filename>Dt/ComboBox.h</Filename>.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.21">
<Title>Demo Program<IndexTerm>
<Primary>demo program</Primary>
<Secondary>&lt;Filename>DtComboBox&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>DtComboBox&lt;Default Para Font></Primary>
<Secondary>demo program</Secondary>
</IndexTerm></Title>
<Para>A demo containing an example of the <Command>DtComboBox</Command> widget is in
<Filename>/usr/dt/examples/dtwidget/controls.c</Filename>.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.22">
<Title>Moving to XmComboBox<IndexTerm>
<Primary>compatibility</Primary>
<Secondary>&lt;Filename>DtComboBox&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>DtComboBox&lt;Default Para Font></Primary>
<Secondary>compatibility with Motif 2.1</Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>XmComboBox&lt;Default Para Font>, compatibility with &lt;Filename>DtComboBox&lt;Default Para Font></Primary>
</IndexTerm></Title>
<Para>To use the Motif 2.1 <Command>XmComboBox</Command> widget, change the <Command>Dt</Command> names for
the class, type, and creation routines to <Command>Xm</Command>. For example, change all
occurrences of <Command>DtComboBox</Command> to <Command>XmComboBox</Command> in your code. Alternatively, you can compile
your existing code with <Symbol>-DDT_USE_XM_COMBOBOX</Symbol>.
This information is supplied in case you choose to
revise your CDE 1.0 application to use the Motif 2.1 widget.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.23">
<Title>Convenience Functions<IndexTerm>
<Primary>convenience functions</Primary>
<Secondary>&lt;Filename>DtComboBox&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>DtComboBox&lt;Default Para Font></Primary>
<Secondary>convenience functions</Secondary>
</IndexTerm></Title>
<Para>The <Command>DtComboBox</Command> widget provides the following convenience functions,
described in more detail in
<!--Original XRef content: 'Table&numsp;7&hyphen;4'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.10">.</Para>
<Para>See the <Filename MoreInfo="RefEntry">DtComboBox</Filename>(3) man page for more information.</Para>
<Table Id="PG.widgs.tbl.4" Frame="Topbot">
<Title Id="PG.widgs.mkr.10">DtComboBox Widget Convenience Functions</Title>
<TGroup Cols="2">
<ColSpec Colname="1" Colwidth="1.875 in">
<ColSpec Colname="2" Colwidth="3.125 in">
<THead>
<Row>
<Entry><Para><Literal>Function</Literal></Para></Entry>
<Entry><Para><Literal>Description</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Filename>DtCreateComboBox()</Filename></Para></Entry>
<Entry><Para>Creates a <Command>DtComboBox</Command> widget.</Para></Entry>
</Row>
<Row>
<Entry><Para><Filename>DtComboBoxAddItem()</Filename></Para></Entry>
<Entry><Para>Adds an item into a <Command>DtComboBox</Command> widget at a
specified position.</Para></Entry>
</Row>
<Row>
<Entry><Para><Filename>DtComboBoxDeletePos()</Filename></Para></Entry>
<Entry><Para>Deletes a specified item from a <Command>DtComboBox</Command>
widget.</Para></Entry>
</Row>
<Row>
<Entry><Para><Filename>DtComboBoxSetItem()</Filename></Para></Entry>
<Entry><Para>Selects an item in the <Command>XmList</Command> of a <Command>DtComboBox</Command>
widget and makes it the first visible item in the list.</Para></Entry>
</Row>
<Row>
<Entry><Para><Filename>DtComboBoxSelectItem()</Filename></Para></Entry>
<Entry><Para>Selects an item in the <Command>XmList</Command> of the <Command>DtComboBox</Command>
widget.</Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
<Para><Command>DtComboBox</Command> is a subclass of the <Command>XmManager</Command> class that is used to display
<Command>XmList</Command> or <Command>XmScrolledList</Command>.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.24">
<Title>Classes<IndexTerm>
<Primary>classes</Primary>
<Secondary>&lt;Filename>DtComboBox&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>DtComboBox&lt;Default Para Font></Primary>
<Secondary>classes</Secondary>
</IndexTerm></Title>
<Para><Command>DtComboBox</Command> inherits behavior and resources from <Command>Core</Command>, <Command>Composite</Command>,
<Command>Constraints</Command>, and <Command>XmManager</Command> classes.</Para>
<Para>The class pointer is <Command>dtComboBoxWidgetClass</Command>.</Para>
<Para>The class name is <Command>DtComboBoxWidget</Command>.</Para>
<Para><Command>DtComboBoxWidget</Command> does not support subclassing.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.25">
<Title>Resources<IndexTerm>
<Primary>&lt;Filename>DtComboBox&lt;Default Para Font></Primary>
<Secondary>resources</Secondary>
</IndexTerm><IndexTerm>
<Primary>resources</Primary>
<Secondary>&lt;Filename>DtComboBox&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para><Command>DtComboBox</Command> provides the following resources.
<!--Original XRef content: 'Table&numsp;7&hyphen;5'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.11"> shows the class, type,
default, and access for these resources.</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para><Command>DtNmarginHeight</Command> specifies the number of pixels added between the top
and bottom of the text widget and the start of the shadow.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNmarginWidth</Command> specifies the number of pixels added between the right
and left sides of the text widget and the start of the shadow.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNselectedItem</Command> is passed through to the <Command>XmList</Command> to set the
<Command>XmNselectedItemCount</Command> and <Command>XmNselectedItems</Command> as the single item in
the <Command>DtNitems</Command> that matches this specified <Command>XmString</Command> in the list.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNselectedPosition</Command> is passed through to the <Command>XmList</Command> to set the
<Command>XmNselectedItemCount</Command> and <Command>XmNselectedItems</Command> as the single item at
this specified position in the list.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNselectionCallback</Command> is issued when an item is selected from the
<Command>DtComboBox</Command> widget list.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNcomboBoxType</Command> determines the style type of the <Command>DtComboBox</Command>.</Para>
</ListItem>
</ItemizedList>
<Para>The list widget ID is accessible using the <Filename>XtNameToWidget()</Filename> function. The
resources of these widgets can be set. See the <Filename MoreInfo="RefEntry">DtComboBox</Filename>(3) man page for
more information.</Para>
<Para>The codes in the access column show if you can:</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para>Set the resource at creation time (C)</Para>
</ListItem>
<ListItem>
<Para>Set by using <Command>XtSetValues</Command> (S)</Para>
</ListItem>
<ListItem>
<Para>Retrieve by using <Command>XtGetValues</Command> (G)</Para>
</ListItem>
</ItemizedList>
<Table Id="PG.widgs.tbl.5" Frame="Topbot">
<Title Id="PG.widgs.mkr.11">DtComboBox Widget Resources</Title>
<TGroup Cols="5">
<ColSpec Colname="1" Colwidth="1.7 in">
<ColSpec Colname="2" Colwidth="1.6 in">
<ColSpec Colname="3" Colwidth="1.325 in">
<ColSpec Colname="4" Colwidth="1.7 in">
<ColSpec Colname="5" Colwidth="0.7 in">
<THead>
<Row>
<Entry><Para><Literal>Name</Literal></Para></Entry>
<Entry><Para><Literal>Class</Literal></Para></Entry>
<Entry><Para><Literal>Type</Literal></Para></Entry>
<Entry><Para><Literal>Default</Literal></Para></Entry>
<Entry><Para><Literal>Access</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Command>DtNmarginHeight</Command></Para></Entry>
<Entry><Para><Command>DtCMarginHeight</Command></Para></Entry>
<Entry><Para><Command>Dimension</Command></Para></Entry>
<Entry><Para><Filename>2</Filename></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNmarginWidth</Command></Para></Entry>
<Entry><Para><Command>DtCMarginWidth</Command></Para></Entry>
<Entry><Para><Command>Dimension</Command></Para></Entry>
<Entry><Para><Filename>2</Filename></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNselectedItem</Command></Para></Entry>
<Entry><Para><Command>DtCSelectedItem</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dimension</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNselectedPosition</Command></Para></Entry>
<Entry><Para><Command>DtCSelectedPosition</Command></Para></Entry>
<Entry><Para><Command>int</Command></Para></Entry>
<Entry><Para><Command>Dimension</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNselectionCallback</Command></Para></Entry>
<Entry><Para><Command>DtCCallback</Command></Para></Entry>
<Entry><Para><Command>XtCallbackList</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>C</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNcomboBoxType</Command></Para></Entry>
<Entry><Para><Command>DtCComboBoxType</Command></Para></Entry>
<Entry><Para><Command>unsigned char</Command></Para></Entry>
<Entry><Para><Command>int</Command></Para></Entry>
<Entry><Para><Command>CG</Command></Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect2>
<Sect2 Id="PG.widgs.div.26">
<Title>Callback Structures<IndexTerm>
<Primary>&lt;Filename>DtComboBox&lt;Default Para Font></Primary>
<Secondary>callback structures</Secondary>
</IndexTerm><IndexTerm>
<Primary>callback structures</Primary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>DtComboBox&lt;Default Para Font></Primary>
</IndexTerm></Title>
<Para>The callback structure follows and is described in
<!--Original XRef content: 'Table&numsp;7&hyphen;6'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.12">.</Para>
<ProgramListing>typedef struct {
 int  <Symbol Role="Variable">reason</Symbol>;
 XEvent <Symbol Role="Variable">*event</Symbol>;
 XmString <Symbol Role="Variable">item_or_text</Symbol>;
 int <Symbol Role="Variable">item_position</Symbol>;
} DtComboBoxCallbackStruct;</ProgramListing>
<Table Id="PG.widgs.tbl.6" Frame="Topbot">
<Title Id="PG.widgs.mkr.12">DtComboBox Callback Structures</Title>
<TGroup Cols="2">
<ColSpec Colname="1" Colwidth="1.25 in">
<ColSpec Colname="2" Colwidth="3.75 in">
<THead>
<Row>
<Entry><Para><Literal>Structure</Literal></Para></Entry>
<Entry><Para><Literal>Description</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Symbol Role="Variable">reason</Symbol></Para></Entry>
<Entry><Para>The only reason to issue this callback is <Filename>XmCR_SELECT</Filename>.</Para></Entry>
</Row>
<Row>
<Entry><Para><Symbol Role="Variable">event</Symbol></Para></Entry>
<Entry><Para>A pointer to the event that caused this callback to be invoked.
It can be NULL.</Para></Entry>
</Row>
<Row>
<Entry><Para><Symbol Role="Variable">item_or_text</Symbol></Para></Entry>
<Entry><Para>The contents of the text widget at the time the event invoked
the callback. This data is only valid within the scope of the
<Filename>call_data</Filename> structure, so it must be copied when it is used
outside of this scope.</Para></Entry>
</Row>
<Row>
<Entry><Para><Symbol Role="Variable">item_position</Symbol></Para></Entry>
<Entry><Para>The new value of the <Command>DtNposition</Command> resource in the
<Command>DtComboBox</Command> list. If the value is 0, the user entered a value in
the <Command>XmTextField</Command> widget.</Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect2>
<Sect2 Id="PG.widgs.div.27">
<Title>Example of DtComboBox Widget<IndexTerm>
<Primary>&lt;Filename>DtComboBox&lt;Default Para Font></Primary>
<Secondary>example code</Secondary>
</IndexTerm><IndexTerm>
<Primary>code example</Primary>
<Secondary>&lt;Filename>DtComboBox&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The following example shows how to create and use a <Command>DtComboBox</Command> widget.
You can find this code as part of the <Filename>controls.c</Filename> demo in the
<Filename>/usr/dt/examples/dtwidget</Filename> directory.</Para>
<ProgramListing>/*
 * Example code for DtComboBox
 */

#include &lt;Dt/ComboBox.h>

static char *comboValueStrings[] = {
 &ldquo;alpha&rdquo;, &ldquo;beta&rdquo;, &ldquo;gamma&rdquo;, &ldquo;delta&rdquo;,
 &ldquo;epsilon&rdquo;, &ldquo;zeta&rdquo;, &ldquo;eta&rdquo;, &ldquo;theta&rdquo;,
 &ldquo;iota&rdquo;, &ldquo;kappa&rdquo;, &ldquo;lambda&rdquo;, &ldquo;mu&rdquo;,
 &ldquo;nu&rdquo;, &ldquo;xi&rdquo;, &ldquo;omicron&rdquo;, &ldquo;pi&rdquo;,
 &ldquo;rho&rdquo;, &ldquo;sigma&rdquo;, &ldquo;tau&rdquo;, &ldquo;upsilon&rdquo;,
 &ldquo;phi&rdquo;, &ldquo;chi&rdquo;, &ldquo;psi&rdquo;, &ldquo;omega&rdquo;
};

static char *colorStrings[] = { &ldquo;Red&rdquo;, &ldquo;Yellow&rdquo;, &ldquo;Green&rdquo;, &ldquo;Brown&rdquo;,
&ldquo;Blue&rdquo; };

static void CreateComboBoxes(Widget parent)
{
    Widget titleLabel, comboBox, list;
    XmString *valueXmstrings, *colorXmstrings;
    int numValueStrings, numColorStrings;
    XmString labelString, xmString;
    Arg args[20];
    int i, n;

    /* Create value compound strings */

    numValueStrings = XtNumber(comboValueStrings);
    valueXmstrings = (XmString *)XtMalloc(numValueStrings *
  sizeof(XmString*));
    for (i = 0; i &lt; numValueStrings; i++) {
  valueXmstrings[i] =

  XmStringCreateLocalized(comboValueStrings[i]);
    }

    /* Create color compound strings */

 numColorStrings = XtNumber(colorStrings);
 colorXmstrings = (XmString *)XtMalloc(numColorStrings *
 sizeof(XmString*));
  for (i = 0; i &lt; numColorStrings; i++) {
  colorXmstrings[i] =

  XmStringCreateLocalized(colorStrings[i]);
    }

    /* Create title label */

    labelString = XmStringCreateLocalized(&ldquo;ComboBox Widget&rdquo;);
    n = 0;
    XtSetArg(args[n], XmNlabelString, labelString); n++;
    titleLabel = XmCreateLabel(parent, &ldquo;title&rdquo;, args, n);
    XtManageChild(titleLabel);
    XmStringFree(labelString);


    /*
     * Create an editable ComboBox containing the color strings.
     * Get the widget id of the drop down list, add some greek
     * letter names to it, and make more items visible.
     */

    n = 0;
    XtSetArg(args[n], DtNcomboBoxType, DtDROP_DOWN_COMBO_BOX); n++;
    XtSetArg(args[n], DtNitems, colorXmstrings); n++;
    XtSetArg(args[n], DtNitemCount, numColorStrings); n++;
    XtSetArg(args[n], DtNvisibleItemCount, 5); n++;
    XtSetArg(args[n], DtNcolumns, 10); n++;
    comboBox = DtCreateComboBox(parent, &ldquo;comboBox1&rdquo;, args, n);
    XtManageChild(comboBox);

    list = XtNameToWidget(comboBox, &ldquo;*List&rdquo;);
    XmListAddItems(list, valueXmstrings, 10, 0);
    XtVaSetValues(list, XmNvisibleItemCount, 10, NULL);


    /*
     * Create an editable ComboBox with no entries.
     * Get the widget id of the drop down list, add some greek
     * letter names to it and select the third item in the list.
     */

    n = 0;
    XtSetArg(args[n], DtNcomboBoxType, DtDROP_DOWN_COMBO_BOX); n++;
    XtSetArg(args[n], DtNorientation, DtLEFT); n++;
    XtSetArg(args[n], DtNcolumns, 10); n++;
    comboBox = DtCreateComboBox(parent, &ldquo;comboBox2&rdquo;, args, n);
    XtManageChild(comboBox);

    list = XtNameToWidget(comboBox, &ldquo;*List&rdquo;);
    XmListAddItems(list, valueXmstrings, 7, 0);
    XtVaSetValues(list, XmNvisibleItemCount, 7, NULL);
    XtVaSetValues(comboBox, DtNselectedPosition, 3, NULL);


    /*
     * Create a non-editable ComboBox containing some greek letter

   names.
     * Position the arrow on the left.
     * Select the `gamma' item in the list.
     */

    n = 0;
    XtSetArg(args[n], DtNorientation, DtLEFT); n++;
    XtSetArg(args[n], DtNitems, valueXmstrings); n++;
    XtSetArg(args[n], DtNitemCount, numValueStrings); n++;
    XtSetArg(args[n], DtNvisibleItemCount, 8); n++;
    comboBox = DtCreateComboBox(parent, &ldquo;comboBox3&rdquo;, args, n);
    XtManageChild(comboBox);

    xmString = XmStringCreateLocalized(&ldquo;gamma&rdquo;);
    XtVaSetValues(comboBox, DtNselectedItem, xmString, NULL);
    XmStringFree(xmString);

    /*
     * Create a non-editable ComboBox with no entries.
     * Position the arrow on the right.
     * Add the greek letter names to the list and select the fourth
   item.
     */

    n = 0;
    XtSetArg(args[n], DtNorientation, DtRIGHT); n++;
    XtSetArg(args[n], DtNvisibleItemCount, 8); n++;
    comboBox = DtCreateComboBox(parent, &ldquo;comboBox4&rdquo;, args, n);
    XtManageChild(comboBox);

 for (i = 0; i &lt; numValueStrings; i++) {
  DtComboBoxAddItem(comboBox, valueXmstrings[i],
  0, True);
    }
    XtVaSetValues(comboBox, DtNselectedPosition, 4, NULL);

    /*
     * Free value and color strings, ComboBox has taken a copy.
     */

 for (i = 0; i &lt; numValueStrings; i++) {
  XmStringFree(valueXmstrings[i]);
    }
    XtFree((char*)valueXmstrings);

 for (i = 0; i &lt; numColorStrings; i++) {
  XmStringFree(colorXmstrings[i]);
    }
    XtFree((char*)colorXmstrings);
}</ProgramListing>
</Sect2>
</Sect1>
<Sect1 Id="PG.widgs.div.28">
<Title Id="PG.widgs.mkr.13">Menu Button Widget (DtMenuButton)<IndexTerm>
<Primary>&lt;Filename>DtMenuButton&lt;Default Para Font> widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>&lt;Filename>DtMenuButton&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>menu button widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>menu button</Secondary>
</IndexTerm><IndexTerm>
<Primary>pop-up menu button widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>pop-up menu</Secondary>
</IndexTerm></Title>
<Para>Use the <Command>DtMenuButton</Command> widget to provide menu-cascading functionality
outside of a menu pane.</Para>
<Para><Command>DtMenuButton</Command> widget is a command widget that complements the menu<IndexTerm>
<Primary>cascading menu widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>cascading menu</Secondary>
</IndexTerm>
cascading functionality of an <Command>XmCascadeButton</Command> widget. As a complement to
<Command>XmCascadeButton</Command> widget, it can only be instantiated outside a <Command>MenuBar</Command>,
<Command>Pulldown</Command>, or <Command>Popup</Command> (use <Command>XmCascadeButton</Command> widget inside a <Command>MenuPane</Command>.)
<!--Original XRef content: 'Figure&numsp;7&hyphen;2'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.9"> shows examples of a <Command>DtMenuButton</Command> widget.</Para>
<Figure>
<Title Id="PG.widgs.mkr.14">Examples of menu button widget (DtMenuButton)<IndexTerm>
<Primary>&lt;Filename>DtMenuButton&lt;Default Para Font></Primary>
<Secondary>illustration</Secondary>
</IndexTerm><IndexTerm>
<Primary>illustration</Primary>
<Secondary>&lt;Filename>DtMenuButton&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Graphic Entityref="PG.widgs.fig.3" Id="PG.widgs.grph.3"></Graphic>
</Figure>
<Sect2 Id="PG.widgs.div.29">
<Title>Library and Header Files<IndexTerm>
<Primary>&lt;Filename>DtMenuButton&lt;Default Para Font></Primary>
<Secondary>header file</Secondary>
</IndexTerm><IndexTerm>
<Primary>header file</Primary>
<Secondary>&lt;Filename>DtMenuButton&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>library</Primary>
<Secondary>&lt;Filename>libDtWidget&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>libDtWidget&lt;Default Para Font> library</Primary>
</IndexTerm></Title>
<Para>The <Command>DtMenuButton</Command> widget is in the <Command>libDtWidget</Command> library. The header file is
<Filename>Dt/MenuButton.h</Filename>.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.30">
<Title>Demo Program<IndexTerm>
<Primary>&lt;Filename>DtMenuButton&lt;Default Para Font></Primary>
<Secondary>demo program</Secondary>
</IndexTerm><IndexTerm>
<Primary>demo program</Primary>
<Secondary>&lt;Filename>DtMenuButton&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>A demo containing an example of the <Command>DtMenuButton</Command> widget is in
<Filename>/usr/dt/examples/dtwidget/controls.c</Filename>.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.31">
<Title>Convenience Functions<IndexTerm>
<Primary>&lt;Filename>DtMenuButton&lt;Default Para Font></Primary>
<Secondary>convenience functions</Secondary>
</IndexTerm><IndexTerm>
<Primary>convenience functions</Primary>
<Secondary>&lt;Filename>DtMenuButton&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para><Filename>DtCreateMenuButton()</Filename> is a convenience function that creates a Common
Desktop Environment widget.</Para>
<Para><Command>DtMenuButton</Command> widget is a subclass of <Command>XmLabel</Command> class. Visually,
<Command>DtMenuButton</Command> widget has a label string and a menu glyph. The menu glyph
always appears on the right end of the widget and, by default, is a downward
pointing arrow.</Para>
<Para><Command>DtMenuButton</Command> widget has an implicitly created submenu attached to it. The
submenu is a pop-up menu and has this <Command>DtMenuButton</Command> widget as its parent.
The name of the implicitly created submenu is obtained by prefixing
<Filename>submenu_</Filename> to the name of this <Command>DtMenuButton</Command> widget. You can obtain the
widget ID of the submenu by setting an <Command>XtGetValues</Command> on <Command>DtNsubMenuId</Command>
resource of this <Command>DtMenuButton</Command> widget. The implicitly created submenu must
not be destroyed by the user of this widget.</Para>
<Para>The submenu can be popped up by pressing the menu post button (see
<Command>XmNmenuPost</Command> resource of <Command>XmRowColumn</Command>) anywhere on the <Command>DtMenuButton</Command>
widget or by pressing the Motif Cancel key (usually Escape).</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.32">
<Title>Classes<IndexTerm>
<Primary>&lt;Filename>DtMenuButton&lt;Default Para Font></Primary>
<Secondary>classes</Secondary>
</IndexTerm><IndexTerm>
<Primary>classes</Primary>
<Secondary>&lt;Filename>DtMenuButton&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para><Command>DtMenuButtonWidget</Command> inherits behavior and resources from <Command>Core</Command>,
<Command>XmPrimitive</Command>, and <Command>XmLabel</Command> classes.</Para>
<Para>The class pointer is <Command>dtMenuButtonWidgetClass</Command>.</Para>
<Para>The class name is <Command>DtMenuButtonWidget</Command>.</Para>
<Para><Command>DtMenuButtonWidget</Command> does not support subclassing.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.33">
<Title>Resources<IndexTerm>
<Primary>&lt;Filename>DtMenuButton&lt;Default Para Font></Primary>
<Secondary>resources</Secondary>
</IndexTerm><IndexTerm>
<Primary>resources</Primary>
<Secondary>&lt;Filename>DtMenuButton&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para><Command>DtMenuButtonWidget</Command> provides the following resources.
<!--Original XRef content: 'Table&numsp;7&hyphen;7'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.15"> shows the
class, type, default, and access for these resources.</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para><Command>DtNcascadingCallback</Command> specifies the list of callbacks that are called before
the attached submenu is displayed.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNcascadePixmap</Command> specifies the pixmap that is displayed as the menu
glyph. If no pixmap is specified, a downward pointing arrow is displayed.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNsubMenuId</Command> specifies the widget ID of the pop-up menu pane to be
associated with this <Command>DtMenuButton</Command> widget. You must create the pop-up
menu pane with this <Command>DtMenuButton</Command> as its parent. You cannot specify this
resource when the widget is created because the submenu is automatically
destroyed by this widget when the resource is set.</Para>
</ListItem>
</ItemizedList>
<Para>See the <Filename MoreInfo="RefEntry">DtMenuButtonWidget</Filename>(3) man page for more information.</Para>
<Para>The codes in the access column show if you can:</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para>Set the resource at creation time (C)</Para>
</ListItem>
<ListItem>
<Para>Set by using <Command>XtSetValues</Command> (S)</Para>
</ListItem>
<ListItem>
<Para>Retrieve by using <Command>XtGetValues</Command> (G)</Para>
</ListItem>
</ItemizedList>
<Table Id="PG.widgs.tbl.7" Frame="Topbot">
<Title Id="PG.widgs.mkr.15">DtMenuButtonWidget Resources</Title>
<TGroup Cols="5">
<ColSpec Colname="1" Colwidth="1.8 in">
<ColSpec Colname="2" Colwidth="1.5 in">
<ColSpec Colname="3" Colwidth="1.27857 in">
<ColSpec Colname="4" Colwidth="1.70714 in">
<ColSpec Colname="5" Colwidth="0.7 in">
<THead>
<Row>
<Entry><Para><Literal>Name</Literal></Para></Entry>
<Entry><Para><Literal>Class</Literal></Para></Entry>
<Entry><Para><Literal>Type</Literal></Para></Entry>
<Entry><Para><Literal>Default</Literal></Para></Entry>
<Entry><Para><Literal>Access</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Command>DtNcascadingCallback</Command></Para></Entry>
<Entry><Para><Command>DtCCallback</Command></Para></Entry>
<Entry><Para><Command>XtCallbackList</Command></Para></Entry>
<Entry><Para><Command>NULL</Command></Para></Entry>
<Entry><Para><Command>C</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNcascadePixmap</Command></Para></Entry>
<Entry><Para><Command>DtCPixmap</Command></Para></Entry>
<Entry><Para><Command>Pixmap</Command></Para></Entry>
<Entry><Para><Filename>XmUNSPECIFIED_PIXMAP</Filename></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNsubMenuId</Command></Para></Entry>
<Entry><Para><Command>DtCMenuWidget</Command></Para></Entry>
<Entry><Para><Command>Widget</Command></Para></Entry>
<Entry><Para><Command>NULL</Command></Para></Entry>
<Entry><Para><Command>SG</Command></Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect2>
<Sect2 Id="PG.widgs.div.34">
<Title>Callback Structures<IndexTerm>
<Primary>&lt;Filename>DtMenuButton&lt;Default Para Font></Primary>
<Secondary>callback structures</Secondary>
</IndexTerm><IndexTerm>
<Primary>callback structures</Primary>
<Secondary>&lt;Filename>DtMenuButton&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The callback structure follows and is described in
<!--Original XRef content: 'Table&numsp;7&hyphen;8'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.16">.</Para>
<ProgramListing>typedef struct {
 int  <Symbol Role="Variable">reason</Symbol>;
 XEvent <Symbol Role="Variable">*event</Symbol>;
} XmAnyCallbackStruct;</ProgramListing>
<Table Id="PG.widgs.tbl.8" Frame="Topbot">
<Title Id="PG.widgs.mkr.16">DtMenuButtonWidget Callback Structures</Title>
<TGroup Cols="2">
<ColSpec Colname="1" Colwidth="1.25 in">
<ColSpec Colname="2" Colwidth="3.74009 in">
<THead>
<Row>
<Entry><Para><Literal>Structure</Literal></Para></Entry>
<Entry><Para><Literal>Description</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Symbol Role="Variable">reason</Symbol></Para></Entry>
<Entry><Para>Returns reason why the callback was invoked.</Para></Entry>
</Row>
<Row>
<Entry><Para><Symbol Role="Variable">event</Symbol></Para></Entry>
<Entry><Para>Points to the <Command>XEvent</Command> that triggered the callback or <Command>NULL</Command> if the
callback was not triggered by an XEvent.</Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect2>
<Sect2 Id="PG.widgs.div.35">
<Title>Example of DtMenuButton Widget<IndexTerm>
<Primary>&lt;Filename>DtMenuButton&lt;Default Para Font></Primary>
<Secondary>example code</Secondary>
</IndexTerm><IndexTerm>
<Primary>code example</Primary>
<Secondary>&lt;Filename>DtMenuButton&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The following example shows how to create and use a <Command>DtMenuButton</Command> widget.
You can find this code as part of the <Filename>controls.c</Filename> demo in the
<Filename>/usr/dt/examples/dtwidget</Filename> directory.</Para>
<ProgramListing>/*
 * Example code for DtMenuButton
 */

#include Dt/DtMenuButton.h

/* MenuButton custom glyph */

#define menu_glyph_width 16
#define menu_glyph_height 16
static unsigned char menu_glyph_bits[] = {
 0xe0, 0x03, 0x98, 0x0f, 0x84, 0x1f, 0x82, 0x3f, 0x82, 0x3f, 0x81,

 0x7f,
 0x81, 0x7f, 0xff, 0x7f, 0xff, 0x40, 0xff, 0x40, 0xfe, 0x20, 0xfe,

 0x20,
 0xfc, 0x10, 0xf8, 0x0c, 0xe0, 0x03, 0x00, 0x00};

static void CreateMenuButtons(Widget parent)
{
    Widget menuButton, submenu, titleLabel, button;
    Pixmap cascadePixmap;
    Pixel fg, bg;
    Cardinal depth;
    XmString labelString;
    Arg args[20];
    int i, n;

    /* Create title label */

    labelString = XmStringCreateLocalized(&ldquo;MenuButton Widget&rdquo;);
    n = 0;
    XtSetArg(args[n], XmNlabelString, labelString); n++;
    titleLabel = XmCreateLabel(parent, &ldquo;title&rdquo;, args, n);
    XtManageChild(titleLabel);
    XmStringFree(labelString);

    /*
     * Create a MenuButton.
     * Add push buttons to the built-in popup menu.
     */

    labelString = XmStringCreateLocalized(&ldquo;Action&rdquo;);
    n = 0;
    XtSetArg(args[n], XmNlabelString, labelString); n++;
 menuButton = DtCreateMenuButton(parent, &ldquo;menuButton1&rdquo;, args, n);
    XtManageChild(menuButton);
    XmStringFree(labelString);

    XtVaGetValues(menuButton, DtNsubMenuId, &amp;submenu, NULL);
    button = XmCreatePushButton(submenu, &ldquo;Push&rdquo;, NULL, 0);
    XtManageChild(button);
    button = XmCreatePushButton(submenu, &ldquo;Pull&rdquo;, NULL, 0);
    XtManageChild(button);
    button = XmCreatePushButton(submenu, &ldquo;Turn&rdquo;, NULL, 0);
    XtManageChild(button);

    /*
     * Create a MenuButton.
     * Replace the built-in popup menu with a tear-off menu.
     * Add a custom pixmap in the colors of the MenuButton.
     */

    labelString = XmStringCreateLocalized(&ldquo;Movement&rdquo;);
    n = 0;
    XtSetArg(args[n], XmNlabelString, labelString); n++;
 menuButton = DtCreateMenuButton(parent, &ldquo;menuButton1&rdquo;, args, n);
    XtManageChild(menuButton);
    XmStringFree(labelString);

    /* Create a tear-off menu */

    n = 0;
    XtSetArg(args[0], XmNtearOffModel, XmTEAR_OFF_ENABLED); n++;
    submenu = XmCreatePopupMenu(menuButton, &ldquo;submenu&rdquo;, args, n);
    button = XmCreatePushButton(submenu, &ldquo;Run&rdquo;, NULL, 0);
    XtManageChild(button);
    button = XmCreatePushButton(submenu, &ldquo;Jump&rdquo;, NULL, 0);
    XtManageChild(button);
    button = XmCreatePushButton(submenu, &ldquo;Stop&rdquo;, NULL, 0);
    XtManageChild(button);

    XtVaSetValues(menuButton, DtNsubMenuId, submenu, NULL);

    /* Create a pixmap using the menu button's colors and depth */

    XtVaGetValues(menuButton,
   XmNforeground, &amp;fg,
   XmNbackground, &amp;bg,
   XmNdepth, &amp;depth,
   NULL);

    cascadePixmap = XCreatePixmapFromBitmapData(XtDisplay
  (menuButton),DefaultRootWindow(XtDisplay
  (menuButton)),
  (char*)menu_glyph_bits,
  menu_glyph_width, menu_glyph_height,
  fg, bg, depth);
    XtVaSetValues(menuButton, DtNcascadePixmap, cascadePixmap,

 NULL);
}</ProgramListing>
</Sect2>
</Sect1>
<Sect1 Id="PG.widgs.div.36">
<Title Id="PG.widgs.mkr.17">Text Editor Widget (DtEditor)<IndexTerm>
<Primary>widget</Primary>
<Secondary>text editor</Secondary>
</IndexTerm><IndexTerm>
<Primary>text editor widget</Primary>
</IndexTerm><IndexTerm>
<Primary>widget</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font> widget</Primary>
</IndexTerm></Title>
<Para>The Common Desktop Environment text editing system consists of two
components:</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para>The text editor client, <Command>dtpad</Command>, which provides editing services through
graphical, action, and ToolTalk interfaces.</Para>
</ListItem>
<ListItem>
<Para>The editor widget, <Filename MoreInfo="RefEntry">DtEditor</Filename>(3), which provides a programmatic interface
for the following editing services:</Para>
<ItemizedList Remap="Bullet2">
<ListItem>
<Para>Cut and paste</Para>
</ListItem>
<ListItem>
<Para>Search and replace</Para>
</ListItem>
<ListItem>
<Para>Simple formatting</Para>
</ListItem>
<ListItem>
<Para>Spell checking (for 8-bit locales)</Para>
</ListItem>
<ListItem>
<Para>Undo previous edit</Para>
</ListItem>
<ListItem>
<Para>Enhanced I/O handling capabilities that support input and output of
ASCII text, multibyte text, and buffers of data</Para>
</ListItem>
<ListItem>
<Para>Support for reading and writing files directly</Para>
</ListItem>
</ItemizedList>
</ListItem>
</ItemizedList>
<Para>Although the Motif text widget also provides a programmatic interface,
applications that use the system-wide uniform editor should use the
<Filename MoreInfo="RefEntry">DtEditor</Filename>(3) widget. The Common Desktop Environment Text Editor and
Mailer use the editor widget. Use this widget in the following circumstances:</Para>
<OrderedList>
<ListItem>
<Para>You want the functionality, such as spell checking, undo, and find/change,
that is provided by the <Filename MoreInfo="RefEntry">DtEditor</Filename>(3) widget.</Para>
</ListItem>
<ListItem>
<Para>You do not want to write the code so that users may read and write data to
and from a file.</Para>
</ListItem>
<ListItem>
<Para>Your program does not need to examine every character typed or every
cursor movement made by a user.</Para>
</ListItem>
</OrderedList>
<Para>This section describes the text editor widget, <Filename MoreInfo="RefEntry">DtEditor</Filename>(3).</Para>
<Para>The Editor Widget library provides support for creating and editing text files.
It enables applications running in the desktop environment to have a
consistent method of editing text data. The <Filename MoreInfo="RefEntry">DtEditor</Filename>(3) widget consists of a
scrolled edit window for text, an optional status line, and dialogs for finding
and changing text, spell checking, and specifying formatting options. The text
editor widget includes a set of convenience functions for programmatically
controlling the widget.</Para>
<Sect2 Id="PG.widgs.div.37">
<Title>Library and Header Files<IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font></Primary>
<Secondary>header file</Secondary>
</IndexTerm><IndexTerm>
<Primary>header files</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm><IndexTerm>
<Primary>&lt;Filename>libDtWidget&lt;Default Para Font> library</Primary>
</IndexTerm><IndexTerm>
<Primary>library</Primary>
<Secondary>&lt;Filename>libDtWidget&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The <Command>DtEditor</Command> widget is in the <Command>libDtWidget</Command> library. The header file is
<Filename>Dt/Editor.h</Filename>.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.38">
<Title>Demo Program<IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font></Primary>
<Secondary>demo program</Secondary>
</IndexTerm><IndexTerm>
<Primary>demo program</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>A demo containing an example of the <Command>DtEditor</Command> widget is in
<Filename>/usr/dt/examples/dtwidget/editor.c</Filename>.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.39">
<Title>Classes<IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font></Primary>
<Secondary>classes</Secondary>
</IndexTerm><IndexTerm>
<Primary>classes</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>Widget subclassing is not supported for the <Command>DtEditor</Command> widget class.</Para>
<Para><Command>DtEditor</Command> inherits behavior and resources from <Command>Core</Command>, <Command>Composite</Command>,
<Command>Constraints</Command>, <Command>XmManager</Command>, and <Command>XmForm</Command> classes.</Para>
<Para>The class name for the editor widget is <Command>DtEditorWidget</Command>.</Para>
<Para>The class pointer is <Command>dtEditorWidgetClass</Command>.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.40">
<Title>Convenience Functions<IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font></Primary>
<Secondary>convenience functions</Secondary>
</IndexTerm><IndexTerm>
<Primary>convenience functions</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The <Command>DtEditor</Command> convenience functions are described in the following tables.</Para>
<Sect3 Id="PG.widgs.div.41">
<Title>Life Cycle Functions<IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font></Primary>
<Secondary>life cycle functions</Secondary>
</IndexTerm><IndexTerm>
<Primary>life cycle functions</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The <Command>DtEditor</Command> life cycle functions are described in
<!--Original XRef content: 'Table&numsp;7&hyphen;9'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.18">.</Para>
<Table Id="PG.widgs.tbl.9" Frame="Topbot">
<Title Id="PG.widgs.mkr.18">DtEditor Life Cycle Functions</Title>
<TGroup Cols="2">
<ColSpec Colname="1" Colwidth="2.125 in">
<ColSpec Colname="2" Colwidth="2.87897 in">
<THead>
<Row>
<Entry><Para><Literal>Function</Literal></Para></Entry>
<Entry><Para><Literal>Description</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Command>DtCreateEditor</Command></Para></Entry>
<Entry><Para>Creates a new instance of a <Command>DtEditor</Command> widget
and its children.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorReset</Command></Para></Entry>
<Entry><Para>Restores a <Command>DtEditor</Command> widget to its initial state.</Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect3>
<Sect3 Id="PG.widgs.div.42">
<Title>Input/Output Functions<IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font></Primary>
<Secondary>input/output functions</Secondary>
</IndexTerm><IndexTerm>
<Primary>input/output functions</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The <Command>DtEditor</Command> input/output functions are described in
<!--Original XRef content: 'Table&numsp;7&hyphen;10'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.19">.</Para>
<Table Id="PG.widgs.tbl.10" Frame="Topbot">
<Title Id="PG.widgs.mkr.19">DtEditor Input/Output Functions</Title>
<TGroup Cols="2">
<ColSpec Colname="1" Colwidth="2.25 in">
<ColSpec Colname="2" Colwidth="2.75 in">
<THead>
<Row>
<Entry><Para><Literal>Function</Literal></Para></Entry>
<Entry><Para><Literal>Description</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Command>DtEditorAppend</Command></Para></Entry>
<Entry><Para>Appends content data to the end of an editor
widget.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorAppendFromFile</Command></Para></Entry>
<Entry><Para>Appends the contents of a file to the end of
an editor widget.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorGetContents</Command></Para></Entry>
<Entry><Para>Retrieves the entire contents of an editor
widget.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorInsert</Command></Para></Entry>
<Entry><Para>Inserts content data at the current insert
position.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorInsertFromFile</Command></Para></Entry>
<Entry><Para>Inserts the contents of a file at the current
insert position.</Para></Entry>
</Row>
<Row>
<Entry><Para>DtEditorReplace</Para></Entry>
<Entry><Para>Replaces a portion of text with the supplied
data.</Para></Entry>
</Row>
<Row>
<Entry><Para>DtEditorReplaceFromFile</Para></Entry>
<Entry><Para>Replaces a portion of text with the contents of
a file.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorSaveContentsToFile</Command></Para></Entry>
<Entry><Para>Saves the entire contents to a file.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorSetContents</Command></Para></Entry>
<Entry><Para>Loads content data into an editor widget,
replacing the entire contents of the widget.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorSetContentsFromFile</Command></Para></Entry>
<Entry><Para>Loads the contents of a file into an editor
widget, replacing the entire contents of the
widget.</Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect3>
<Sect3 Id="PG.widgs.div.43">
<Title>Selection Functions<IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font></Primary>
<Secondary>selection functions</Secondary>
</IndexTerm><IndexTerm>
<Primary>selection functions</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The <Command>DtEditor</Command> selection functions are described in
<!--Original XRef content: 'Table&numsp;7&hyphen;11'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.20">.</Para>
<Table Id="PG.widgs.tbl.11" Frame="Topbot">
<Title Id="PG.widgs.mkr.20">DtEditor Selection Functions</Title>
<TGroup Cols="2">
<ColSpec Colname="1" Colwidth="2.25 in">
<ColSpec Colname="2" Colwidth="2.75 in">
<THead>
<Row>
<Entry><Para><Literal>Function</Literal></Para></Entry>
<Entry><Para><Literal>Description</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Command>DtEditorClearSelection</Command></Para></Entry>
<Entry><Para>Replaces the currently selected contents with
blanks.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorCopyToClipboard</Command></Para></Entry>
<Entry><Para>Copies the currently selected contents to the
clipboard.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorCutToClipboard</Command></Para></Entry>
<Entry><Para>Removes the currently selected contents,
placing then on the clipboard.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorDeleteSelection</Command></Para></Entry>
<Entry><Para>Removes the currently selected contents.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorDeselect</Command></Para></Entry>
<Entry><Para>Deselects any selected contents.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorPasteFromClipboard</Command></Para></Entry>
<Entry><Para>Pastes the contents of the clipboard into an
editor widget, replacing any currently
selected contents.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorSelectAll</Command></Para></Entry>
<Entry><Para>Selects the entire contents of an editor widget.</Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect3>
<Sect3 Id="PG.widgs.div.44">
<Title>Format Functions<IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font></Primary>
<Secondary>format functions</Secondary>
</IndexTerm><IndexTerm>
<Primary>format functions</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The <Command>DtEditor</Command> format functions are described in
<!--Original XRef content: 'Table&numsp;7&hyphen;12'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.21">.</Para>
<Table Id="PG.widgs.tbl.12" Frame="Topbot">
<Title Id="PG.widgs.mkr.21">DtEditor Format Functions</Title>
<TGroup Cols="2">
<ColSpec Colname="1" Colwidth="2.12302 in">
<ColSpec Colname="2" Colwidth="2.85715 in">
<THead>
<Row>
<Entry><Para><Literal>Function</Literal></Para></Entry>
<Entry><Para><Literal>Description</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Command>DtEditorFormat</Command></Para></Entry>
<Entry><Para>Formats all or part of the contents of an editor
widget.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorInvokeFormatDialog</Command></Para></Entry>
<Entry><Para>Displays the format dialog box that enables the
user to specify format settings for margins and
justification style and to perform formatting
operations.</Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect3>
<Sect3 Id="PG.widgs.div.45">
<Title>Find and Change Functions<IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font></Primary>
<Secondary>find and change functions</Secondary>
</IndexTerm><IndexTerm>
<Primary>find and change functions</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The <Command>DtEditor</Command> find and change functions are described in
<!--Original XRef content: 'Table&numsp;7&hyphen;13'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.22">.</Para>
<Table Id="PG.widgs.tbl.13" Frame="Topbot">
<Title Id="PG.widgs.mkr.22">DtEditArea Find and Change Functions</Title>
<TGroup Cols="2">
<ColSpec Colname="1" Colwidth="2.5 in">
<ColSpec Colname="2" Colwidth="2.5 in">
<THead>
<Row>
<Entry><Para><Literal>Function</Literal></Para></Entry>
<Entry><Para><Literal>Description</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Command>DtEditorChange</Command></Para></Entry>
<Entry><Para>Changes one or all occurrences of a
string.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorFind</Command></Para></Entry>
<Entry><Para>Finds the next occurrence of a string.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorInvokeFindChangeDialog</Command></Para></Entry>
<Entry><Para>Displays the dialog box that enables the
user to search for, and optionally change,
a string.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorInvokeSpellDialog</Command></Para></Entry>
<Entry><Para>Displays a dialog box with a list of
misspelled words in the current contents.</Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect3>
<Sect3 Id="PG.widgs.div.46">
<Title>Auxiliary Functions<IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font></Primary>
<Secondary>auxiliary functions</Secondary>
</IndexTerm><IndexTerm>
<Primary>auxiliary functions</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The <Command>DtEditor</Command> auxiliary functions are described in
<!--Original XRef content: 'Table&numsp;7&hyphen;14'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.23">.</Para>
<Table Id="PG.widgs.tbl.14" Frame="Topbot">
<Title Id="PG.widgs.mkr.23">DtEditor Auxiliary Functions</Title>
<TGroup Cols="2">
<ColSpec Colname="1" Colwidth="2.5 in">
<ColSpec Colname="2" Colwidth="2.5 in">
<THead>
<Row>
<Entry><Para><Literal>Function</Literal></Para></Entry>
<Entry><Para><Literal>Description</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Command>DtEditorCheckForUnsavedChanges</Command></Para></Entry>
<Entry><Para>Reports whether the contents of an editor
widget have been altered since the last
time they were retrieved or saved.</Para></Entry>
</Row>
<Row>
<Entry><Para>DtEditorDisableRedisplay</Para></Entry>
<Entry><Para>Prevents redisplay of an editor widget
even though its visual attributes have
changed.</Para></Entry>
</Row>
<Row>
<Entry><Para>DtEditorEnableRedisplay</Para></Entry>
<Entry><Para>Forces the visual update of an editor
widget.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorGetInsertPosition</Command></Para></Entry>
<Entry><Para>Returns the insertion cursor position of
the editor widget.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorGetLastPosition</Command></Para></Entry>
<Entry><Para>Returns the position of the last character
in the edit window.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorGetMessageTextFieldID</Command></Para></Entry>
<Entry><Para>Retrieves the widget ID of the text field
widget used to display application
messages.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorGetSizeHints</Command></Para></Entry>
<Entry><Para>Retrieves sizing information from an
editor widget.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorGoToLine</Command></Para></Entry>
<Entry><Para>Moves the insertion cursor to the
specified line.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorSetInsertionPosition</Command></Para></Entry>
<Entry><Para>Sets the position of the insertion cursor.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorTraverseToEditor</Command></Para></Entry>
<Entry><Para>Sets keyboard traversal to the edit
window of an editor widget.</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtEditorUndoEdit</Command></Para></Entry>
<Entry><Para>Undoes the last edit made by a user.</Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect3>
</Sect2>
<Sect2 Id="PG.widgs.div.47">
<Title>Resources<IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font></Primary>
<Secondary>resources</Secondary>
</IndexTerm><IndexTerm>
<Primary>resources</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The <Command>DtEditor</Command> widget provides the following set of resources.</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para><Command>DtNautoShowCursorPosition</Command> ensures that the text visible in the scrolled
edit window contains the insert cursor when set to True. If the insert cursor
changes, the contents of the editor may scroll to bring the insertion point
into the window.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNblinkRate</Command> specifies the blink rate of the text cursor in milliseconds.
The time it takes to blink the insertion cursor on and off is twice the blink
rate. When the blink rate is set to zero, the cursor does not blink. The value
must not be negative.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNbuttonFontList</Command> specifies the font list used for the buttons that are
displayed in the dialog boxes of <Command>DtEditor</Command>.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNcolumns</Command> specifies the initial width of the editor as an integer
number of characters. The value must be greater than zero.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNcursorPosition</Command> specifies the location of the current insert cursor in
the editor where the current insert cursor is placed. Position is determined
by the number of characters from the beginning of the text. The first
character position is 0.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNcursorPositionVisible</Command> marks the insert cursor position by a
blinking text cursor when the Boolean value is True.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNdialogTitle</Command> specifies the title for all dialogs displayed by DtEditor.
These include the dialogs for word search and replace, misspelled words,
and format settings.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNeditable</Command> indicates that the user can edit the data when set to True.
Prohibits the user from editing data when set to False.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNlabelFontList</Command> specifies the font list used for <Command>DtEditor</Command> labels (the
labels are displayed in the status line and <Command>DtEditor</Command> dialog boxes).</Para>
</ListItem>
<ListItem>
<Para><Command>DtNoverstrike</Command> when set to False, characters typed into the editor widget
inserts at the position of the cursor (the default). When set to True,
characters typed into the editor widget replace the characters that directly
follow the insertion cursor. When the end of the line is reached, characters
are appended to the end of the line. If the status line is visible, the
<Command>DtNoverstrikeIndicatorLabel</Command> is displayed in the status line whenever
<Command>DtNoverstrike</Command> is True.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNrows</Command> specifies the initial height of the editor measured in character
heights. The value must be greater than zero.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNscrollHorizontal</Command> adds a scroll bar that enables the user to scroll
horizontally through text when the Boolean value is True.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNscrollLeftSide</Command> puts a vertical scroll bar on the left side of the
scrolled edit window when the Boolean value is True.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNshowStatusLine</Command> displays a status line below the text window when
set to True. The status line contains a field that displays the current line
number of the insert cursor, total number of lines in the document, and
whether the editor is in overstrike mode. Users can type a line number in
the line number display to go directly to that line.</Para>
</ListItem>
</ItemizedList>
<Para>The status line also includes a Motif <Filename MoreInfo="RefEntry">XmTextField</Filename>(3) widget for displaying
messages supplied by an application. This field is a convenient place for an
application to display status and feedback about the document being edited.
The ID of the text field is retrieved using
<Filename MoreInfo="RefEntry">DtEditorGetMessageTextFieldID</Filename>(3). A message is displayed by setting
the <Command>XmNvalue</Command> or <Command>XmNvalueWcs</Command> resource of this widget. If the text field is not
needed, you can unmanage it by calling <Filename MoreInfo="RefEntry">XtUnmanageWidget</Filename>(3) with its ID.</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para><Command>DtNspellFilter</Command> specifies the filter used to identify spelling errors. The
function <Filename MoreInfo="RefEntry">DtEditorInvokeSpellDialog</Filename>(3) filters the contents of an
editor through the filter specified by <Command>DtNspellFilter</Command>. The filter specified
should accept a file name and produce a list of misspelled and unrecognized
words in this file on <Command>stdout</Command>. The default filter is <Filename>spell</Filename>(1).</Para>
</ListItem>
<ListItem>
<Para><Command>DtNtextBackground</Command> specifies the background for the edit window.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNtextDeselectCallback</Command> specifies a function called whenever no text
is selected within the edit area. The reason sent by the callback is
<Filename>DtEDITOR_TEXT_DESELECT</Filename>.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNtextFontList</Command> specifies the font list used for the <Command>DtEditor</Command> edit
window and its text fields. The text fields are displayed in the status line
and <Command>DtEditor</Command> dialog boxes.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNtextForeground</Command> specifies the foreground for the edit window.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNtextSelectCallback</Command> specifies a function called whenever text is
selected within the edit area. The reason sent by the callback is
<Filename>DtEDITOR_TEXT_SELECT</Filename>.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNtextTranslations</Command> specifies translations that are added to the edit
window. Translations specified with this resource override any duplicate
translations defined for the edit window. See the <Filename MoreInfo="RefEntry">DtEditor</Filename>(3) man page
for a list of translations provided by <Command>DtEditor</Command>.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNtopCharacter</Command> displays the line that contains the position of text at the
top of the scrolled edit window. The line is displayed at the top of the
widget without shifting the text left or right. Position is determined by the
number of characters from the beginning of the text. The first character
position is zero.</Para>
<Para><Filename MoreInfo="RefEntry">XGetValues</Filename>(3) for <Command>DtNtopCharacter</Command> returns the position of the first
character in the line that is displayed at the top of the widget.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNwordWrap</Command> breaks lines at word breaks with soft carriage returns when
they reach the right edge of the window. Note that word wrap affects only
the visual appearance of the contents of an editor widget. The line breaks
(soft carriage returns) are not physically inserted into the text. The editor
does support substituting hard carriage returns when the contents of the
widget are retrieved or saved to a file. See the <Filename MoreInfo="RefEntry">DtEditorGetContents</Filename>(3)
and <Filename MoreInfo="RefEntry">DtEditorSaveContentsToFile</Filename>(3) man pages for more information.</Para>
</ListItem>
</ItemizedList>
<Para><!--Original XRef content: 'Table&numsp;7&hyphen;15'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.24"> lists the class, type, default, and access for each resource. You can
also set the resource values for the inherited classes to set attributes for this
widget. To reference a resource by name or class in an <Filename>.Xdefaults</Filename> file,
remove the <Command>DtN</Command> or <Command>DtC</Command> prefix and use the remaining letters. To specify one of
the defined values for a resource in an <Filename>.Xdefaults</Filename> file, remove the <Command>Dt</Command> prefix
and use the remaining letters (in either lowercase or uppercase, but include
any underscores between words).</Para>
<Para>The codes in the access column show if you can:</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para>Set the resource at creation time (C)</Para>
</ListItem>
<ListItem>
<Para>Set by using <Command>XtSetValues</Command> (S)</Para>
</ListItem>
<ListItem>
<Para>Retrieve by using <Command>XtGetValues</Command> (G)</Para>
</ListItem>
</ItemizedList>
<Para>See the <Filename MoreInfo="RefEntry">DtEditor</Filename>(3) man page for more information.</Para>
<Table Id="PG.widgs.tbl.15" Frame="Topbot">
<Title Id="PG.widgs.mkr.24">DtEditor Resources</Title>
<TGroup Cols="5">
<ColSpec Colname="1" Colwidth="2.1131 in">
<ColSpec Colname="2" Colwidth="2.13294 in">
<ColSpec Colname="3" Colwidth="1.26984 in">
<ColSpec Colname="4" Colwidth="0.98214 in">
<ColSpec Colname="5" Colwidth="0.53571 in">
<THead>
<Row>
<Entry><Para><Literal>Name</Literal></Para></Entry>
<Entry><Para><Literal>Class</Literal></Para></Entry>
<Entry><Para><Literal>Type</Literal></Para></Entry>
<Entry><Para><Literal>Default</Literal></Para></Entry>
<Entry><Para><Literal>Access</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Command>DtNautoShowCursorPosition</Command></Para></Entry>
<Entry><Para><Command>DtCAutoShowCursorPosition</Command></Para></Entry>
<Entry><Para><Command>Boolean</Command></Para></Entry>
<Entry><Para><Command>True</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNblinkRate</Command></Para></Entry>
<Entry><Para><Command>DtCBlinkRate</Command></Para></Entry>
<Entry><Para><Command>int</Command></Para></Entry>
<Entry><Para><Filename>500</Filename></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para>DtNbuttonFontList</Para></Entry>
<Entry><Para>DtCFontList</Para></Entry>
<Entry><Para>XmFontList</Para></Entry>
<Entry><Para>Dynamic</Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNcolumns</Command></Para></Entry>
<Entry><Para><Command>DtCColumns</Command></Para></Entry>
<Entry><Para><Command>XmNcolumns</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNcursorPosition</Command></Para></Entry>
<Entry><Para><Command>DtCCursorPosition</Command></Para></Entry>
<Entry><Para><Command>XmTextPosition</Command></Para></Entry>
<Entry><Para><Filename>0</Filename></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNcursorPositionVisible</Command></Para></Entry>
<Entry><Para><Command>DtCCursorPositionVisible</Command></Para></Entry>
<Entry><Para><Command>Boolean</Command></Para></Entry>
<Entry><Para><Command>True</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNdialogTitle</Command></Para></Entry>
<Entry><Para><Command>DtCDialogTitle</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>NULL</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNeditable</Command></Para></Entry>
<Entry><Para><Command>DtCEditable</Command></Para></Entry>
<Entry><Para><Command>Boolean</Command></Para></Entry>
<Entry><Para><Command>True</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para>DtNlabelFontList</Para></Entry>
<Entry><Para>DtCFontList</Para></Entry>
<Entry><Para>XmFontList</Para></Entry>
<Entry><Para>Dynamic</Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNmaxLength</Command></Para></Entry>
<Entry><Para><Command>DtCMaxLength</Command></Para></Entry>
<Entry><Para><Command>int</Command></Para></Entry>
<Entry><Para><Command>Largest
integer</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNoverstrike</Command></Para></Entry>
<Entry><Para><Command>DtCOverstrike</Command></Para></Entry>
<Entry><Para><Command>Boolean</Command></Para></Entry>
<Entry><Para><Command>False</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNrows</Command></Para></Entry>
<Entry><Para><Command>DtCRows</Command></Para></Entry>
<Entry><Para><Command>XmNrows</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNscrollHorizontal</Command></Para></Entry>
<Entry><Para><Command>DtCScroll</Command></Para></Entry>
<Entry><Para><Command>Boolean</Command></Para></Entry>
<Entry><Para><Command>True</Command></Para></Entry>
<Entry><Para><Command>CG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNscrollLeftSide</Command></Para></Entry>
<Entry><Para><Command>DtCScrollSide</Command></Para></Entry>
<Entry><Para><Command>Boolean</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNscrollTopSide</Command></Para></Entry>
<Entry><Para><Command>DtCScrollSide</Command></Para></Entry>
<Entry><Para><Command>Boolean</Command></Para></Entry>
<Entry><Para><Command>False</Command></Para></Entry>
<Entry><Para><Command>CG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNscrollVertical</Command></Para></Entry>
<Entry><Para><Command>DtCScroll</Command></Para></Entry>
<Entry><Para><Command>Boolean</Command></Para></Entry>
<Entry><Para><Command>True</Command></Para></Entry>
<Entry><Para><Command>CG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNshowStatusLine</Command></Para></Entry>
<Entry><Para><Command>DtCShowStatusLine</Command></Para></Entry>
<Entry><Para><Command>Boolean</Command></Para></Entry>
<Entry><Para><Command>False</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNspellFilter</Command></Para></Entry>
<Entry><Para><Command>DtCspellFilter</Command></Para></Entry>
<Entry><Para><Command>char *</Command></Para></Entry>
<Entry><Para><Command>Spell</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNtextBackground</Command></Para></Entry>
<Entry><Para><Command>DtCBackground</Command></Para></Entry>
<Entry><Para><Command>Pixel</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNtextDeselectCallback</Command></Para></Entry>
<Entry><Para><Command>DtCCallback</Command></Para></Entry>
<Entry><Para><Command>XtCallbackList</Command></Para></Entry>
<Entry><Para><Command>NULL</Command></Para></Entry>
<Entry><Para><Command>C</Command></Para></Entry>
</Row>
<Row>
<Entry><Para>DtNtextFontList</Para></Entry>
<Entry><Para>DtCFontList</Para></Entry>
<Entry><Para>XmFontList</Para></Entry>
<Entry><Para>Dynamic</Para></Entry>
<Entry><Para>CSG</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNtextForeground</Command></Para></Entry>
<Entry><Para><Command>DtCForeground</Command></Para></Entry>
<Entry><Para><Command>Pixel</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para>DtNtextTranslations</Para></Entry>
<Entry><Para>DtCTranslations</Para></Entry>
<Entry><Para>XtTranslations</Para></Entry>
<Entry><Para>NULL</Para></Entry>
<Entry><Para>CS</Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNtextSelectCallback</Command></Para></Entry>
<Entry><Para><Command>DtCCallback</Command></Para></Entry>
<Entry><Para><Command>XtCallbackList</Command></Para></Entry>
<Entry><Para><Command>NULL</Command></Para></Entry>
<Entry><Para><Command>C</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNtopCharacter</Command></Para></Entry>
<Entry><Para><Command>DtCTextPosition</Command></Para></Entry>
<Entry><Para><Command>XmTextPosition</Command></Para></Entry>
<Entry><Para><Filename>0</Filename></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNwordWrap</Command></Para></Entry>
<Entry><Para><Command>DtCWordWrap</Command></Para></Entry>
<Entry><Para><Command>Boolean</Command></Para></Entry>
<Entry><Para><Command>True</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect2>
<Sect2 Id="PG.widgs.div.48">
<Title>Inherited Resources<IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font></Primary>
<Secondary>inherited resources</Secondary>
</IndexTerm><IndexTerm>
<Primary>inherited resources</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para><Command>DtEditor</Command> inherits behavior and resources from the following superclasses:</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para><Command>XmForm</Command></Para>
</ListItem>
<ListItem>
<Para><Command>XmManager</Command></Para>
</ListItem>
<ListItem>
<Para><Command>Composite</Command></Para>
</ListItem>
<ListItem>
<Para><Command>Core</Command></Para>
</ListItem>
</ItemizedList>
<Para>Refer to the appropriate man page for more information.</Para>
</Sect2>
<Sect2 Id="PG.widgs.div.49">
<Title>Localization Resources</Title>
<Para>The following list describes a set of widget resources that are designed for
localization of the <Command>DtEditor</Command> widget and its dialog boxes. Default values for
these resources depend on the locale.</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para><Command>DtNcenterToggleLabel</Command> specifies the label for the center alignment toggle
button in the Format Settings dialog box. The default value in the C locale is
Center.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNchangeAllButtonLabel</Command> specifies the label for the button in the
Find/Change dialog box that changes all occurrences of the Find string in
the document. The default value in the C locale is Change All.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNchangeButtonLabel</Command> specifies the label for the button in the
Find/Change dialog box that changes the next occurrence of the find string
in the document. The default value in the C locale is Change.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNchangeFieldLabel</Command> specifies the label for the field in the Find/Change
dialog box where the user specifies the replacement string. The default
value in the C locale is Change To.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNcurrentLineLabel</Command> specifies the label for the current line number field
in the status line. The default value in the C locale is Line.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNfindButtonLabel</Command> specifies the label for the button in the
Find/Change dialog box that finds the next occurrence of the find string in
the document. The default value in the C locale is Find.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNfindChangeDialogTitle</Command> specifies the title for the Find/Change
dialog box. If <Command>DtNdialogTitle</Command> is non-null, it is added to the front of this
resource to form the title. The default value in the C locale is Find/Change.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNfindFieldLabel</Command> specifies the label for the field in the Find/Change
dialog box where the user specifies the search string. The default value in
the C locale is Find.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNformatAllButtonLabel</Command> specifies the label for the button in the
Format Settings dialog box that formats the complete document. The default
value in the C locale is All.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNformatParagraphButtonLabel</Command> specifies the label for the button in
the Format Settings dialog box that formats the paragraph containing the
insertion cursor. The default value in the C locale is Paragraph.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNformatSettingsDialogTitle</Command> specifies the title for the Format
Settings dialog box. If DtNdialogTitle is non-null, it is added to the front of
this resource to form the title. The default value in the C locale is Format
Settings.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNinformationDialogTitle</Command> specifies the title for the Information
dialog box that is used to present feedback and general information to the
user. If <Command>DtNdialogTitle</Command> is non-null, it is added to the front of this
resource to form the title. The default value in the C locale is Information.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNjustifyToggleLabel</Command> specifies the label for the justify alignment
toggle button in the Format Settings dialog box. The default value in the C
locale is Justify.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNleftAlignToggleLabel</Command> specifies the label for the left alignment
toggle button in the Format Settings dialog box. The default value in the C
locale is Left Align.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNleftMarginFieldLabel</Command> specifies the label for the left margin value
field in the Format Settings dialog box. The default value in the C locale is
Left Margin.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNmisspelledListLabel</Command> specifies the label for the list of unrecognized
and misspelled words in the Spell dialog box. The default value in the C
locale is Misspelled Words.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNoverstrikeLabel</Command> specifies the label in the status line that shows that
the editor is in overstrike mode. The default value in the C locale is
Overstrike.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNrightAlignToggleLabel</Command> specifies the label for the right alignment
toggle button in the Format Settings dialog box. The default value in the C
locale is Right Align.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNrightMarginFieldLabel</Command> specifies the label for the right margin value
field in the Format Settings dialog box. The default value in the C locale is
Right Margin.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNspellDialogTitle</Command> specifies the title for the Format Settings dialog
box. If <Command>DtNdialogTitle</Command> is non-null, it is added to the front of this resource
to form the title. The default value in the C locale is Spell.</Para>
</ListItem>
<ListItem>
<Para><Command>DtNtotalLineCountLabel</Command> specifies the label for the display as part of the
status line that shows the total number of lines in the document. The default
value in the C locale is Total.</Para>
</ListItem>
</ItemizedList>
<Para><!--Original XRef content: 'Table&numsp;7&hyphen;16'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.25"> lists the class, type, default, and access for each of the localization
resources. The codes in the access column show if you can:</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para>Set the resource at creation time (C)</Para>
</ListItem>
<ListItem>
<Para>Set by using <Command>XtSetValues</Command> (S)</Para>
</ListItem>
<ListItem>
<Para>Retrieve by using <Command>XtGetValues</Command> (G)</Para>
</ListItem>
</ItemizedList>
<Para>See the <Filename MoreInfo="RefEntry">DtEditor</Filename>(3) man page for more information.</Para>
<Table Id="PG.widgs.tbl.16" Frame="Topbot">
<Title Id="PG.widgs.mkr.25">DtEditor Localization Resources</Title>
<TGroup Cols="5">
<ColSpec Colname="1" Colwidth="2.53969 in">
<ColSpec Colname="2" Colwidth="2.32143 in">
<ColSpec Colname="3" Colwidth="0.80357 in">
<ColSpec Colname="4" Colwidth="0.73412 in">
<ColSpec Colname="5" Colwidth="0.54563 in">
<THead>
<Row>
<Entry><Para><Literal>Name</Literal></Para></Entry>
<Entry><Para><Literal>Class</Literal></Para></Entry>
<Entry><Para><Literal>Type</Literal></Para></Entry>
<Entry><Para><Literal>Default</Literal></Para></Entry>
<Entry><Para><Literal>Access</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Command>DtNcenterToggleLabel</Command></Para></Entry>
<Entry><Para><Command>DtCCenterToggleLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNchangeAllButtonLabel</Command></Para></Entry>
<Entry><Para><Command>DtCChangeAllButtonLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNchangeButtonLabel</Command></Para></Entry>
<Entry><Para><Command>DtCChangeButtonLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNchangeFieldLabel</Command></Para></Entry>
<Entry><Para><Command>DtCChangeFieldLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNcurrentLineLabel</Command></Para></Entry>
<Entry><Para><Command>DtCCurrentLineLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNfindButtonLabel</Command></Para></Entry>
<Entry><Para><Command>DtCFindButtonLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNfindChangeDialogTitle</Command></Para></Entry>
<Entry><Para><Command>DtCFindChangeDialogTitle</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNfindFieldLabel</Command></Para></Entry>
<Entry><Para><Command>DtCFindFieldLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNformatAllButtonLabel</Command></Para></Entry>
<Entry><Para><Command>DtCFormatAllButtonLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNformatParagraphButtonLabel</Command></Para></Entry>
<Entry><Para><Command>DtCFormatParagraphButtonLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNformatSettingsDialogTitle</Command></Para></Entry>
<Entry><Para><Command>DtCFormatSettingsDialogTitle</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNinformationDialogTitle</Command></Para></Entry>
<Entry><Para><Command>DtCInformationDialogTitle</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNjustifyToggleLabel</Command></Para></Entry>
<Entry><Para><Command>DtCJustifyToggleLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNleftAlignToggleLabel</Command></Para></Entry>
<Entry><Para><Command>DtCLeftAlignToggleLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNleftMarginFieldLabel</Command></Para></Entry>
<Entry><Para><Command>DtCLeftMarginFieldLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNmisspelledListLabel</Command></Para></Entry>
<Entry><Para><Command>DtCMisspelledListLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNoverstrikeLabel</Command></Para></Entry>
<Entry><Para><Command>DtCOverstrikeLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNrightAlignToggleLabel</Command></Para></Entry>
<Entry><Para><Command>DtCRightAlignToggleLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNrightMarginFieldLabel</Command></Para></Entry>
<Entry><Para><Command>DtCRightMarginFieldLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNspellDialogTitle</Command></Para></Entry>
<Entry><Para><Command>DtCSpellDialogTitle</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
<Row>
<Entry><Para><Command>DtNtotalLineCountLabel</Command></Para></Entry>
<Entry><Para><Command>DtCTotalLineCountLabel</Command></Para></Entry>
<Entry><Para><Command>XmString</Command></Para></Entry>
<Entry><Para><Command>Dynamic</Command></Para></Entry>
<Entry><Para><Command>CSG</Command></Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
</Sect2>
<Sect2 Id="PG.widgs.div.50">
<Title>Callback Functions<IndexTerm>
<Primary>&lt;Filename>DtEditor&lt;Default Para Font></Primary>
<Secondary>callback functions</Secondary>
</IndexTerm><IndexTerm>
<Primary>callback functions</Primary>
<Secondary>&lt;Filename>DtEditor&lt;Default Para Font></Secondary>
</IndexTerm></Title>
<Para>The <Command>DtEditor</Command> widget supports three callback functions:</Para>
<ItemizedList Remap="Bullet1">
<ListItem>
<Para><Command>DtEditorNHelpCallback</Command></Para>
</ListItem>
<ListItem>
<Para><Command>DtNtextSelectCallback</Command></Para>
</ListItem>
<ListItem>
<Para><Command>DtNtextDeselectCallback</Command></Para>
</ListItem>
</ItemizedList>
<Para>If you want to present help information about the editor widget and its dialog
boxes, set the <Command>XmNhelpCallback</Command> resource and use the reason field passed as
part of <Command>DtEditorHelpCallbackStruct</Command> to set the contents of the Help dialog
box. A pointer to the following structure is passed to <Command>XmNHelpCallback</Command>. The
callback structure and is described in
<!--Original XRef content: 'Table&numsp;7&hyphen;17'--><XRef Role="CodeOrFigureOrTable" Linkend="PG.widgs.mkr.26">.</Para>
<ProgramListing>typedef struct {
 int       <Symbol Role="Variable">reason</Symbol>;
 XEvent    *<Symbol Role="Variable">event</Symbol>;
} DtEditorHelpCallbackStruct;</ProgramListing>
<Table Id="PG.widgs.tbl.17" Frame="Topbot">
<Title Id="PG.widgs.mkr.26">DtEditorHelp Callback Structure</Title>
<TGroup Cols="2">
<ColSpec Colname="1" Colwidth="0.86309 in">
<ColSpec Colname="2" Colwidth="4.13692 in">
<THead>
<Row>
<Entry><Para><Literal>Structure</Literal></Para></Entry>
<Entry><Para><Literal>Description</Literal></Para></Entry>
</Row>
</THead>
<TBody>
<Row>
<Entry><Para><Symbol Role="Variable">reason</Symbol></Para></Entry>
<Entry><Para>The reason why the callback was invoked. Refer to the <Filename MoreInfo="RefEntry">DtEditor</Filename>(3)
man page for a list of reasons.</Para></Entry>
</Row>
<Row>
<Entry><Para><Symbol Role="Variable">event</Symbol></Para></Entry>
<Entry><Para>A pointer to the event that invoked this callback. The value can be
NULL.</Para></Entry>
</Row>
</TBody>
</TGroup>
</Table>
<Para>Use the <Command>DtNtextSelectCallback</Command> and <Command>DtNtextDeselectCallback</Command>
resources when you want to enable and disable menu items and commands
depending on whether text is selected. <Command>DtNtextSelectCallback</Command> specifies a
function that is called whenever some text is selected in the edit window.
<Command>DtNtextDeselectCallback</Command> specifies a function that is called whenever no
text is selected within the edit window. The reasons sent by the callbacks are
<Filename>DtEDITOR_TEXT_SELECT</Filename> and <Filename>DtEDITOR_TEXT_DESELECT</Filename>.</Para>
</Sect2>
</Sect1>
</Chapter>
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