XtCallCallbacks(3Xt)XtCallCallbacks(3Xt)NAME
XtCallCallbacks, XtCallCallbacks, XtCallCallbackList, XtHasCallbacks-
process callbacks
SYNOPSIS
void XtCallCallbacks(w, callback_name, call_data)
Widget w;
String callback_name;
XtPointer call_data;
void XtCallCallbackList(w, callbacks, call_data)
Widget w;
XtCallbackList callbacks;
XtPointer call_data;
typedef enum {XtCallbackNoList, XtCallbackHasNone, XtCallbackHasSome}
XtCallbackStatus;
XtCallbackStatus XtHasCallbacks(w, callback_name)
Widget w;
String callback_name;
ARGUMENTS
Specifies the callback list to be executed or checked. Specifies a
callback-list specific data value to pass to each of the callback pro‐
cedure in the list. Specifies the callback list to be executed. Spec‐
ifies the widget.
DESCRIPTION
The XtCallCallbacks function calls each procedure that is registered in
the specified widget's callback list.
If callbacks is not NULL, XtCallCallbackList calls each of the callback
procedures in the list, passing client data and call_data. The call‐
backs parameter must specify the contents of a widget or object
resource declared with representation type XtRCallback.
The XtHasCallbacks function first checks to see if the widget has a
callback list identified by callback_name. If the callback list does
not exist, XtHasCallbacks returns XtCallbackNoList. If the callback
list exists but is empty, it returns XtCallbackHasNone. If the callback
list exists and has at least one callback registered, it returns
XtCallbackHasSome.
SEE ALSOXtAddCallback(3Xt)
X Toolkit Intrinsics -- C Language Interface
Xlib -- C Language X Interface
XtCallCallbacks(3Xt)
