NSUndoManager.Notifications.ObserveWillCloseUndoGroup Method
Definition
Important
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Overloads
| Name | Description |
|---|---|
| ObserveWillCloseUndoGroup(EventHandler<NSUndoManagerCloseUndoGroupEventArgs>) |
Strongly typed notification for the WillCloseUndoGroupNotification constant. |
| ObserveWillCloseUndoGroup(NSObject, EventHandler<NSUndoManagerCloseUndoGroupEventArgs>) |
Strongly typed notification for the WillCloseUndoGroupNotification constant. |
ObserveWillCloseUndoGroup(EventHandler<NSUndoManagerCloseUndoGroupEventArgs>)
Strongly typed notification for the WillCloseUndoGroupNotification constant.
public static Foundation.NSObject ObserveWillCloseUndoGroup(EventHandler<Foundation.NSUndoManagerCloseUndoGroupEventArgs> handler);static member ObserveWillCloseUndoGroup : EventHandler<Foundation.NSUndoManagerCloseUndoGroupEventArgs> -> Foundation.NSObjectParameters
The handler that responds to the notification when it occurs.
Returns
Token object that can be used to stop receiving notifications by either disposing it or passing it to RemoveObservers(IEnumerable<NSObject>).
Remarks
This method can be used to subscribe to WillCloseUndoGroupNotification notifications.
// Listen to all notifications posted for any object
var token = NSUndoManager.Notifications.ObserveWillCloseUndoGroup ((notification) => {
Console.WriteLine ("Observed WillCloseUndoGroupNotification!");
};
// Stop listening for notifications
token.Dispose ();
Applies to
ObserveWillCloseUndoGroup(NSObject, EventHandler<NSUndoManagerCloseUndoGroupEventArgs>)
Strongly typed notification for the WillCloseUndoGroupNotification constant.
public static Foundation.NSObject ObserveWillCloseUndoGroup(Foundation.NSObject objectToObserve, EventHandler<Foundation.NSUndoManagerCloseUndoGroupEventArgs> handler);static member ObserveWillCloseUndoGroup : Foundation.NSObject * EventHandler<Foundation.NSUndoManagerCloseUndoGroupEventArgs> -> Foundation.NSObjectParameters
- objectToObserve
- NSObject
The specific object to observe.
The handler that responds to the notification when it occurs.
Returns
Token object that can be used to stop receiving notifications by either disposing it or passing it to RemoveObservers(IEnumerable<NSObject>).
Remarks
This method can be used to subscribe to WillCloseUndoGroupNotification notifications.
// Listen to all notifications posted for a single object
var token = NSUndoManager.Notifications.ObserveWillCloseUndoGroup (objectToObserve, (notification) => {
Console.WriteLine ($"Observed WillCloseUndoGroupNotification for {nameof (objectToObserve)}!");
};
// Stop listening for notifications
token.Dispose ();