170 lines
6.1 KiB
Plaintext
170 lines
6.1 KiB
Plaintext
<!-- $XConsortium: f_reques.sgm /main/5 1996/08/30 14:29:08 rws $ -->
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<!-- (c) Copyright 1995 Digital Equipment Corporation. -->
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<!-- (c) Copyright 1995 Hewlett-Packard Company. -->
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<!-- (c) Copyright 1995 International Business Machines Corp. -->
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<!-- (c) Copyright 1995 Sun Microsystems, Inc. -->
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<!-- (c) Copyright 1995 Novell, Inc. -->
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<!-- (c) Copyright 1995 FUJITSU LIMITED. -->
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<!-- (c) Copyright 1995 Hitachi. -->
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<![ %CDE.C.CDE; [<RefEntry Id="CDEMX.XCDI.MAN262.rsml.1">]]>
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<![ %CDE.C.XO; [<RefEntry Id="XCDI.MAN262.rsml.1">]]>
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<RefMeta>
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<RefEntryTitle>ttdt_file_request</RefEntryTitle>
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<ManVolNum>library call</ManVolNum>
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</RefMeta>
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<RefNameDiv>
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<RefName><Function>ttdt_file_request</Function></RefName>
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<RefPurpose>create and send a standard ToolTalk request about a file
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</RefPurpose>
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</RefNameDiv>
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<!-- $XConsortium: f_reques.sgm /main/5 1996/08/30 14:29:08 rws $-->
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<!-- CDE Common Source Format, Version 1.0.0-->
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<!-- (c) Copyright 1993, 1994, 1995 Hewlett-Packard Company-->
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<!-- (c) Copyright 1993, 1994, 1995 International Business Machines Corp.-->
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<!-- (c) Copyright 1993, 1994, 1995 Sun Microsystems, Inc.-->
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<!-- (c) Copyright 1993, 1994, 1995 Novell, Inc.-->
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<RefSynopsisDiv>
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<FuncSynopsis Remap="ANSI">
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<FuncSynopsisInfo>#include <Tt/tttk.h>
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</FuncSynopsisInfo>
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<FuncDef>Tt_message <Function>ttdt_file_request</Function></FuncDef>
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<ParamDef>Tt_message <Parameter>context</Parameter></ParamDef>
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<ParamDef>Tttk_op <Parameter>op</Parameter></ParamDef>
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<ParamDef>Tt_scope <Parameter>scope</Parameter></ParamDef>
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<ParamDef>const char *<Parameter>pathname</Parameter></ParamDef>
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<ParamDef>Ttdt_file_cb <Parameter>cb</Parameter></ParamDef>
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<ParamDef>void *<Parameter>client_data</Parameter></ParamDef>
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<ParamDef>int <Parameter>send_and_destroy</Parameter></ParamDef>
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</FuncSynopsis>
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</RefSynopsisDiv>
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<RefSect1>
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<Title>DESCRIPTION</Title>
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<Para>The
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<Function>ttdt_file_request</Function> function
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is used to create (and optionally send) any of
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the standard Desktop file requests
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<![ %CDE.C.XO; [defined in
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<XRef Linkend="XCDI.TT.anch.6" Role="2">, ]]>such as
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<Symbol Role="Message">Get_Modified</Symbol>, <Symbol Role="Message">Save</Symbol>, and
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<Symbol Role="Message">Revert</Symbol>.</Para>
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<Para>The
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<Function>ttdt_file_request</Function> function
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creates a request with the specified
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<Symbol Role="Variable">op</Symbol> and
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<Emphasis>scope</Emphasis>, and sets its file attribute to
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<Symbol Role="Variable">pathname</Symbol>. The function adds an unset argument of
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<StructName Role="typedef">Tt_mode</StructName> <SystemItem Class="Constant">TT_IN</SystemItem> and
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vtype
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<Emphasis>File</Emphasis> to the request, per the Desktop messaging conventions.
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If
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<Symbol Role="Variable">op</Symbol> is
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<SystemItem Class="Constant">TTDT_GET_MODIFIED</SystemItem>, <Function>ttdt_file_request</Function> also adds an unset
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<SystemItem Class="Constant">TT_OUT</SystemItem> argument of
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vtype
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<StructName Role="typedef">Boolean</StructName> to the request.
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The
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<Function>ttdt_file_request</Function> function
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installs
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<Emphasis>cb</Emphasis> as a message callback for the created request, and ensures that
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<Symbol Role="Variable">client_data</Symbol> will be passed into the callback.
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(The
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<StructName Role="typedef">Ttdt_file_cb</StructName> callback is described under
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&cdeman.ttdt.file.join;). If
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<Emphasis>send</Emphasis> is True,
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<Function>ttdt_file_request</Function> sends the request before returning the handle to it;
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otherwise, it only creates the request.
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</Para>
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<Para>The
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<Symbol Role="Variable">context</Symbol> argument describes the environment to use.
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If
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<Symbol Role="Variable">context</Symbol> is not zero, messages created by
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<Function>ttdt_file_request</Function> inherit from
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<Symbol Role="Variable">context</Symbol> all contexts whose slotname begins with the characters
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<SystemItem Class="Constant">ENV_</SystemItem>.</Para>
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</RefSect1>
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<RefSect1>
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<Title>RETURN VALUE</Title>
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<Para>Upon successful completion, the
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<Function>ttdt_file_request</Function> function returns the created
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<StructName Role="typedef">Tt_message</StructName>; otherwise, it returns an error pointer.
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The application can use
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&cdeman.tt.ptr.error; to extract one of the following
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<StructName Role="typedef">Tt_status</StructName> values from the returned handle:
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</Para>
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<VariableList>
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<VarListEntry>
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<Term>TT_ERR_DBAVAIL</Term>
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<ListItem>
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<Para>The ToolTalk service could not access the ToolTalk database
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needed for this operation.
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</Para>
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</ListItem>
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</VarListEntry>
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<VarListEntry>
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<Term>TT_ERR_DBEXIST</Term>
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<ListItem>
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<Para>The ToolTalk service could not access the specified ToolTalk database
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in the expected place.
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</Para>
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</ListItem>
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</VarListEntry>
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<VarListEntry>
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<Term>TT_ERR_NOMEM</Term>
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<ListItem>
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<Para>There is insufficient memory available to perform the function.
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</Para>
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</ListItem>
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</VarListEntry>
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<VarListEntry>
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<Term>TT_ERR_NOMP</Term>
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<ListItem>
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<Para>The
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&cdeman.ttsession; process is not running and the ToolTalk service cannot restart it.
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</Para>
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</ListItem>
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</VarListEntry>
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<VarListEntry>
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<Term>TT_ERR_OVERFLOW</Term>
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<ListItem>
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<Para>The ToolTalk service has more active messages than it can handle.
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(The maximum number of active messages is
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implementation specific, but is at least 2000.)
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</Para>
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</ListItem>
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</VarListEntry>
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<VarListEntry>
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<Term>TT_ERR_POINTER</Term>
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<ListItem>
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<Para>The
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<Symbol Role="Variable">pathname</Symbol> argument was
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<SystemItem Class="Constant">NULL</SystemItem> or was a ToolTalk error pointer.
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</Para>
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</ListItem>
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</VarListEntry>
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<VarListEntry>
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<Term>TT_ERR_PROCID</Term>
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<ListItem>
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<Para>The specified process identifier is out of date or invalid.
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</Para>
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</ListItem>
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</VarListEntry>
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</VariableList>
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</RefSect1>
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<RefSect1>
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<Title>APPLICATION USAGE</Title>
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<Para>The
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<Function>ttdt_file_request</Function> function
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is a lower-level interface than
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<Function>ttdt_Get_Modified</Function>, <Function>ttdt_Save</Function>, and
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<Function>ttdt_Revert</Function>, since the latter functions create and send the request and then block
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on its reply.
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</Para>
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</RefSect1>
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<RefSect1>
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<Title>SEE ALSO</Title>
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<Para>&cdeman.Tt.tttk.h;, &cdeman.ttdt.Get.Modified;, &cdeman.ttdt.Save;, &cdeman.ttdt.Revert;, &cdeman.ttdt.file.join;.</Para>
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</RefSect1>
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</RefEntry>
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<!--fickle 1.12 mancsf-to-docbook 1.2 08/07/95 23:18:47-->
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