XtRemoveCallback() XtRemoveCallback()
Name
XtRemoveCallback - remove a callback from a callback list.
Synopsis
void XtRemoveCallback(object, callback_name, callback, client_data)
Widget object;
String callback_name;
XtCallbackProc callback;
XtPointer client_data;
Inputs
object Specifies the object; may be of class Object or any subclass thereof.
callback_name
Specifies the name of the callback list from which the callback is to be removed.
callback Specifies the callback procedure which is to be removed.
client_data
Specifies the data which was registered with the specified procedure.
Description
XtRemoveCallback() removes the callback/client_data pair from the callback list named by callback_name of the object object. If there is
no entry in the specified callback list that matches both callback and client_data, XtRemoveCallback() returns without generating a warning
message.
Usage
Note that there is no way to remove all calls to a specified procedure from a callback list. To remove a procedure from a callback list,
you must specify the client_data it was registered with.
If you want to remove several procedure/data pairs from a callback list at the same time, use XtRemoveCallbacks().
See AlsoXtAddCallback(1), XtAddCallbacks(1), XtCallCallbacks(1), XtRemoveAllCallbacks(1), XtRemoveCallbacks(1).
Xt - Callbacks XtRemoveCallback()
Check Out this Related Man Page
XtAddCallback(3Xt) XT FUNCTIONS XtAddCallback(3Xt)NAME
XtAddCallback, XtAddCallbacks, XtRemoveCallback, XtRemoveCallbacks, XtRemoveAllCallbacks - add and remove callback procedures
SYNTAX
void XtAddCallback(w, callback_name, callback, client_data)
Widget w;
String callback_name;
XtCallbackProc callback;
XtPointer 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;
XtPointer 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. or the client data to match on the registered
callback procedures
client_data
Specifies the argument that is to be passed to the specified procedure when it is invoked by XtCallbacks or NULL,.
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
X Version 11 Release 6.6 XtAddCallback(3Xt)
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