NAME
XtAppAddActionHook, XtRemoveActionHook - register an action hook procedure
SYNTAX
XtActionHookId
XtAppAddActionHook(XtAppContext app_context, XtActionHookProc
proc, XtPointer client_data);
void
XtRemoveActionHook(XtActionHookId id);
ARGUMENTS
- app_context
- Specifies the application context.
- proc
- Specifies the action hook procedure.
- num_args
- Specifies the application-specific data to be passed to the
action hook.
DESCRIPTION
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
XtCallActionProc, the action
hohok procedures will be called in reverse order of registration jut prior to
invoking the action routine.
Action hook procedures are removed automatically and the
XtActionHookId s
destroyed when the application context in which they were added is destroyed.
XtRemoveActionHook removes the specified action hook procedure from the
list in which it was registered.
SEE ALSO
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface