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XtAppAddActionHook(3Xt)


X11R6


NAME

  XtAppAddActionHook, XtRemoveActionHook - register an action hook procedure


SYNOPSIS

  XtActionHookId XtAppAddActionHook(app_context, proc, client_data)
	  XtAppContext app_context;
	  XtActionHookProc proc;
	  XtPointer client_data;

  void XtRemoveActionHook(idFP)
	  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
  hook procedures will be called in reverse order of registration just prior
  to invoking the action routine.

  Action hook procedures are removed automatically and the XtActionHookId is
  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

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