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XtCallCallbacks(3)                              XT FUNCTIONS                              XtCallCallbacks(3)



NAME
       XtCallCallbacks, XtCallCallbackList, XtHasCallbacks - process callbacks

SYNTAX
       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);

ARGUMENTS
       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.

DESCRIPTION
       The XtCallCallbacks function calls each procedure that is registered in the specified widget's call-back callback
       back list.

       If callbacks is not NULL, XtCallCallbackList calls each of the callback procedures in the list, pass-ing passing
       ing 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 identified by call-back_name. callback_name.
       back_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 XtCallbackHasSome.

SEE ALSO
       XtAddCallback(3Xt)
       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface



X Version 11                                     libXt 1.0.5                              XtCallCallbacks(3)