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.\" $Xorg: XtActHook.man,v 1.3 2000/08/17 19:41:57 cpqbld Exp $
.\"
.\" Copyright (c) 1993, 1994 X Consortium
.\"
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.\" The above copyright notice and this permission notice shall be included in
.\" all copies or substantial portions of the Software.
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.\" $XFree86$
.\"
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.ds xC Inter-Client Communication Conventions Manual
.ds Rn 3
.ds Vn 2.2
.hw XtApp-Add-Action-Hook XtRemove-Action-Hook wid-get
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.TH XtAppAddActionHook 3Xt __xorgversion__ "XT FUNCTIONS"
.SH NAME
XtAppAddActionHook, XtRemoveActionHook \- register an action hook procedure
.SH SYNTAX
.HP
XtActionHookId XtAppAddActionHook(XtAppContext \fIapp_context\fP,
XtActionHookProc \fIproc\fP, XtPointer \fIclient_data\fP);
.HP
void XtRemoveActionHook(XtActionHookId \fIid\fP);
.SH ARGUMENTS
.IP \fIapp_context\fP 1i
Specifies the application context.
.IP \fIproc\fP 1i
Specifies the action hook procedure.
.IP \fInum_args\fP 1i
Specifies the application-specific data to be passed to the action hook.
.SH DESCRIPTION
.ZN XtAppAddActionHook
adds the specified procedure to the front of a list maintained in the
application context. In the future, when an action routine is about to
be invoked for any widget in this application context, either through
the translation manager or via
.ZN XtCallActionProc ,
the action hohok procedures will be called in reverse order of registration
jut prior to invoking the action routine.
.LP
Action hook procedures are removed automatically and the
.ZN XtActionHookId
s destroyed when the application context in which they were added is
destroyed.
.LP
.ZN XtRemoveActionHook
removes the specified action hook procedure from the list in which it
was registered.
.SH "SEE ALSO"
.br
\fI\*(xT\fP
.br
\fI\*(xL\fP
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