共用方式為


PdfView.Notifications.ObserveAnnotationWillHit 方法

定義

多載

ObserveAnnotationWillHit(EventHandler<NSNotificationEventArgs>)

常數的 AnnotationWillHitNotification 強型別通知。

ObserveAnnotationWillHit(NSObject, EventHandler<NSNotificationEventArgs>)

常數的 AnnotationWillHitNotification 強型別通知。

ObserveAnnotationWillHit(EventHandler<NSNotificationEventArgs>)

常數的 AnnotationWillHitNotification 強型別通知。

public static Foundation.NSObject ObserveAnnotationWillHit (EventHandler<Foundation.NSNotificationEventArgs> handler);
static member ObserveAnnotationWillHit : EventHandler<Foundation.NSNotificationEventArgs> -> Foundation.NSObject

參數

handler
EventHandler<NSNotificationEventArgs>

張貼通知時叫用的方法。

傳回

權杖物件,可用來停止接收通知,方法是處置通知或傳遞至 RemoveObservers(IEnumerable<NSObject>)

備註

這個方法可用來訂閱 AnnotationWillHitNotification 通知。

// Listen to all notifications posted for any object
var token = PdfView.Notifications.ObserveAnnotationWillHit ((notification) => {
	Console.WriteLine ("Observed AnnotationWillHitNotification!");
};

// Listen to all notifications posted for a single object
var token = PdfView.Notifications.ObserveAnnotationWillHit (objectToObserve, (notification) => {
	Console.WriteLine ($"Observed AnnotationWillHitNotification for {nameof (objectToObserve)}!");
};

// Stop listening for notifications
token.Dispose ();

適用於

ObserveAnnotationWillHit(NSObject, EventHandler<NSNotificationEventArgs>)

常數的 AnnotationWillHitNotification 強型別通知。

public static Foundation.NSObject ObserveAnnotationWillHit (Foundation.NSObject objectToObserve, EventHandler<Foundation.NSNotificationEventArgs> handler);
static member ObserveAnnotationWillHit : Foundation.NSObject * EventHandler<Foundation.NSNotificationEventArgs> -> Foundation.NSObject

參數

objectToObserve
NSObject

要觀察的物件。

handler
EventHandler<NSNotificationEventArgs>

張貼通知時叫用的方法。

傳回

權杖物件,可用來停止接收通知,方法是處置通知或傳遞至 RemoveObservers(IEnumerable<NSObject>)

備註

這個方法可用來訂閱 AnnotationWillHitNotification 通知。

// Listen to all notifications posted for any object
var token = PdfView.Notifications.ObserveAnnotationWillHit ((notification) => {
	Console.WriteLine ("Observed AnnotationWillHitNotification!");
};

// Listen to all notifications posted for a single object
var token = PdfView.Notifications.ObserveAnnotationWillHit (objectToObserve, (notification) => {
	Console.WriteLine ($"Observed AnnotationWillHitNotification for {nameof (objectToObserve)}!");
};

// Stop listening for notifications
token.Dispose ();

適用於