CTFontManager.Notifications.ObserveRegisteredFontsChanged Method
Definition
Important
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Strongly typed notification for the P:CoreText.CTFontManager.RegisteredFontsChangedNotification constant.
public static Foundation.NSObject ObserveRegisteredFontsChanged (EventHandler<Foundation.NSNotificationEventArgs> handler);static member ObserveRegisteredFontsChanged : EventHandler<Foundation.NSNotificationEventArgs> -> Foundation.NSObjectParameters
- handler
- EventHandler<NSNotificationEventArgs>
Method to invoke when the notification is posted.
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 for P:CoreText.CTFontManager.RegisteredFontsChangedNotification notifications.
// Listen to all notifications posted for any object
var token = CTFontManager.Notifications.ObserveRegisteredFontsChanged ((notification) => {
Console.WriteLine ("Observed RegisteredFontsChangedNotification!");
};
// Listen to all notifications posted for a single object
var token = CTFontManager.Notifications.ObserveRegisteredFontsChanged (objectToObserve, (notification) => {
Console.WriteLine ($"Observed RegisteredFontsChangedNotification for {nameof (objectToObserve)}!");
};
// Stop listening for notifications
token.Dispose ();