XtCallCallbacks(3Xt)
Version 11 (1 September 198
X8
t)
CallCallbacks(3Xt)



  NAME
       XtCallCallbacks, XtHasCallbacks - process callbacks

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

       typedef enum {XtCallbackNoList, XtCallbackHasNone,
       XtCallbackHasSome} XtCallbackStatus;

       XtCallbackStatus XtHasCallbacks(w, callback_name)
             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.

       w         Specifies the widget.

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

       The XtHasCallbacks function first checks to see if the
       widget has a callback list identified 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
       XtCallbackHasSome.




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  XtCallCallbacks(3Xt)
Version 11 (1 September 198
X8
t)
CallCallbacks(3Xt)



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






































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