如何在Xamarin.Mac中捕获应用程序级别的按键事件 [英] How to capture key down events at application level in Xamarin.Mac

问题描述

我有一个Xamarin.Forms应用程序，并使用主窗口中的PreviewKeyDown事件成功捕获了WPF中的应用程序级键盘按下事件.

I have a Xamarin.Forms application and successfully capture application level key down events in WPF using the PreviewKeyDown event in the main window.

如何在AppDelegate中对Xamarin.Mac进行同样的处理?

How do I do the same thing for Xamarin.Mac in AppDelegate or otherwise?

推荐答案

您可以在本地级别的AppDelegate的 DidFinishLaunching 中添加 NSEvent 处理程序，以监视以下内容的任意组合: NSEventMask .

You can add an NSEvent handler in the AppDelegate's DidFinishLaunching at the local level to monitor any combination of the NSEventMask.

public override void DidFinishLaunching(NSNotification notification)
{
    NSEvent.AddLocalMonitorForEventsMatchingMask(NSEventMask.KeyDown, (NSEvent theEvent) =>
    {
        Console.WriteLine(theEvent);
        return theEvent;
    }); 

    Forms.Init();
    LoadApplication(new App());
    base.DidFinishLaunching(notification);
}

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