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