XtCallCallbacks(3Xt) MIT X11R4 XtCallCallbacks(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 function calls each procedure that is registered in the specified widget's callback list.
The function first checks to see if the widget has a callback list identified by callback_name. If the callback list does not exist,
returns If the callback list exists but is empty, it returns If the callback list exists and has at least one callback registered, it
returns
See Also
XtAddCallback(3Xt)
X Window System Toolkit: The Complete Programmer's Guide and Specification, Paul J. Asente and Ralph Swick
X Window System: The Complete Reference, Second Edition, Robert W. Scheifler and James Gettys
XtCallCallbacks(3Xt)
