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X11R7.4 - man page for xtcallcallbacklist (x11r4 section 3)

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XtCallCallbacks(3)			   XT FUNCTIONS 		       XtCallCallbacks(3)

       XtCallCallbacks, XtCallCallbackList, XtHasCallbacks - process callbacks

       void XtCallCallbacks(Widget w, String callback_name, XtPointer call_data);

       void XtCallCallbackList(Widget w, XtCallbackList callbacks, XtPointer call_data);

       typedef enum {XtCallbackNoList, XtCallbackHasNone, XtCallbackHasSome} XtCallbackStatus;

       XtCallbackStatus XtHasCallbacks(Widget w, String callback_name);

		 Specifies the callback list to be executed or checked.

       call_data Specifies a callback-list specific data value to pass to each of the callback
		 procedure in the list.

       callbacks Specifies the callback list to be executed.

       w	 Specifies the widget.

       The XtCallCallbacks function calls each procedure that is registered in the specified wid-
       get's callback list.

       If callbacks is not NULL, XtCallCallbackList calls each of the callback procedures in the
       list, passing client data and call_data. The callbacks parameter must specify the contents
       of a widget or object resource declared with representation type XtRCallback.

       The XtHasCallbacks function first checks to see if the widget has a callback list identi-
       fied by callback_name.  If the callback list does not exist, XtHasCallbacks returns
       XtCallbackNoList.  If the callback list exists but is empty, it returns XtCallbackHasNone.
       If the callback list exists and has at least one callback registered, it returns XtCall-

       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface

X Version 11				   libXt 1.0.5			       XtCallCallbacks(3)
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