XtCallCallbacks(3Xt)X Version 11 (Release 6.6XtCallCallbacks(3Xt)
NAME
XtCallCallbacks, XtCallCallbackList, XtHasCallbacks-
process callbacks
SYNTAX
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
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.
callbacks Specifies the callback list to be executed.
w Specifies 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 callbacks 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.
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XtCallCallbacks(3Xt)X Version 11 (Release 6.6XtCallCallbacks(3Xt)
SEE ALSO
XtAddCallback(3Xt)
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
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