void XtAddCallbacks(w, callback_name, callbacks)
Widget w;
String callback_name;
XtCallbackList callbacks;
void XtRemoveCallback(w, callback_name, callback, client_data)
Widget w;
String callback_name;
XtCallbackProc callback;
XtPointer client_data;
void XtRemoveCallbacks(w, callback_name, callbacks)
Widget w;
String callback_name;
XtCallbackList callbacks;
void XtRemoveAllCallbacks(w, callback_name)
Widget w;
String callback_name;
The XtAddCallbacks add the specified list of callbacks to the specified widget's callback list.
The XtRemoveCallback function removes a callback only if both the procedure and the client data match.
The XtRemoveCallbacks function removes the specified callback procedures from the specified widget's callback list.
The XtRemoveAllCallbacks function removes all the callback procedures from the specified widget's callback list.