XtAppAddActionHook()XtAppAddActionHook()Name
XtAppAddActionHook - register a procedure to be called before any
action is invoked.
Synopsis
XtActionHookId XtAppAddActionHook(app, proc, client_data)
XtAppContext app;
XtActionHookProc proc;
XtPointer client_data;
Inputs
app Specifies the application context.
proc Specifies the action hook procedure.
client_data
Specifies data to be passed to the procedure.
Returns
A handle of type XtActionHookId that can be passed to XtRemoveAction‐
Hook() to unregister the action hook procedure.
Availability
Release 4 and later.
DescriptionXtAppAddActionHook() registers a procedure proc to be called by the
translation manager with data client_data just before any action proce‐
dure is dispatched in the application context app. Any number of
action hook procedure/data pairs may be registered in an application
context, and they will be called in reverse order of registration
(i.e., the most recently registered will be the first called).
See XtActionHookProc(2) for an explanation of how to write an action
hook procedure.
Usage
Action hooks can be used to record user actions for later playback
using XtCallActionProc(). This is one way to implement keyboard
macros.
An action hook procedure can be unregistered with XtRemoveActionHook().
Structures
XtActionHookId is an opaque type.
See AlsoXtRemoveActionHook(1),
XtActionHookProc(2).
Xt - Translations and Actions XtAppAddActionHook()
