XtAddCallback
Section: XT FUNCTIONS (3)
Updated: libXt 1.0.7
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NAME
XtAddCallback, XtAddCallbacks, XtRemoveCallback, XtRemoveCallbacks, XtRemoveAllCallbacks - add and remove callback procedures
SYNTAX
-
- void XtAddCallback(Widget w, String callback_name, XtCallbackProc
callback, XtPointer client_data);
-
- void XtAddCallbacks(Widget w, String callback_name, XtCallbackList
callbacks);
-
- void XtRemoveCallback(Widget w, String callback_name,
XtCallbackProc callback, XtPointer client_data);
-
- void XtRemoveCallbacks(Widget w, String callback_name,
XtCallbackList callbacks);
-
- void XtRemoveAllCallbacks(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.
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 - C Language Interface
Xlib - C Language X Interface