XtAddCallback(3Xt) XtAddCallback(3Xt)
NAME
XtAddCallback, XtAddCallbacks, XtRemoveCallback,
XtRemoveCallbacks, XtRemoveAllCallbacks - add and
remove callback procedures
SYNOPSIS
void XtAddCallback(w, callback_name, callback,
client_data)
Widget w;
String callback_name;
XtCallbackProc callback;
caddr_t 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;
caddr_t 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;
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.
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XtAddCallback(3Xt) XtAddCallback(3Xt)
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(3Xt)
X Toolkit Intrinsics Programming Manual
Xlib Programming Manual
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