NAME

       XtAddCallback, XtAddCallbacks, XtRemoveCallback, XtRemoveCallbacks, XtRemoveAllCallbacks - add and remove
       callback procedures

SYNTAX

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

       void XtAddCallbacks(Widget w, String callback_name, XtCallbackList callbacks);

       void XtRemoveCallback(Widget w, String callback_name, XtCallbackProc callback, XtPointer client_data);

       void XtRemoveCallbacks(Widget w, String callback_name, XtCallbackList callbacks);

       void XtRemoveAllCallbacks(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
                 XtCallbacks or NULL, or the client data to match on the registered callback procedures.

       w         Specifies the widget.

DESCRIPTION

       The XtAddCallback function adds the specified callback procedure 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 callback  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(3)
       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface

X Version 11                                       libXt 1.1.5                                  XtAddCallback(3)