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XtAddCallback, XtAddCallbacks, XtRemoveCallback, XtRemoveCallbacks, XtRemoveAllCallbacks - add and remove callback procedures
void
XtAddCallback(w, callback_name, callback, client_data)
Widget w;
String callback_name;
XtCallbackProc callback;
XtPointer 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;
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;
Specifies the callback procedure.
Specifies the null-terminated list of callback procedures
and corresponding client data.
Specifies the callback list to which the procedure is
to be appended or deleted. or the client data to match on the registered callback
procedures
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.
Specifies the widget.
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.
XtCallCallbacks(3Xt)
X Toolkit Intrinsics -- C Language Interface
Xlib -- C Language X Interface