XtAddCallback(3Xt)                             XtAddCallback(3Xt)



NAME
     XtAddCallback, XtAddCallbacks, XtRemoveCallback, XtRemove-
     Callbacks, XtRemoveAllCallbacks - add and remove callback
     procedures

SYNTAX
     void XtAddCallback(w, callback_name, callback, client_data)
           Widget w;
           String callback_name;
           XtCallbackProc callback;
           caddr_t client_data;

     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;
           caddr_t 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;

ARGUMENTS
     callback  Specifies the callback procedure.

     callbacks Specifies the null-terminated list of callback
               procedures and corresponding client data.

     callback_name
               Specifies the callback list to which the procedure
               is to be appended or deleted.

     client_data
               Specifies the argument that is to be passed to the
               specified procedure when it is invoked by XtCall-
               backs or NULL, or the client data to match on the
               registered callback procedures.

     w         Specifies the widget.





XWIN 3.0               Last change: 9/1/88                 .ie t

XtAddCallback(3Xt)                             XtAddCallback(3Xt)



DESCRIPTION
     The XtAddCallback function adds the specified callback pro-
     cedure to the specified widget's callback list.

     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 call-
     back procedures from the specified widget's callback list.

     The XtRemoveAllCallbacks function removes all the callback
     procedures from the specified widget's callback list.

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



































XWIN 3.0               Last change: 9/1/88                 .ie t

XtAddCallback(3Xt)                             XtAddCallback(3Xt)























































XWIN 3.0               Last change: 9/1/88                 .ie t