Intercept every mouse click to WPF application

Question

I\'m looking to intercept every mouse click in my WPF application. Seems this should be easy with the command routing mechanism, but sorry I\'m not finding anything.

Answer 1

You can register a class handler:

public partial class App : Application
    {
        protected override void OnStartup(StartupEventArgs e)
        {
            EventManager.RegisterClassHandler(typeof(Window), Window.PreviewMouseDownEvent, new MouseButtonEventHandler(OnPreviewMouseDown));

            base.OnStartup(e);
        }

        static void OnPreviewMouseDown(object sender, MouseButtonEventArgs e)
        {
            Trace.WriteLine("Clicked!!");
        }
    }

This will handle any PreviewMouseDown event on any Window created in the application.

Answer 2

<Window .... PreviewMouseDown="Window_PreviewMouseDown_1">
</Window>

This should work for you.

This fires even if other MouseDown events fire for components that it contains.

As per Clemens suggestion in the comments, PreviewMouseDown is a better choice than MouseDown, as that makes sure you can't stop the event bubbling from happening in a different event.

Answer 3

You have a few options:

Low level mouse hook: http://filipandersson.multiply.com/journal/item/7?&show_interstitial=1&u=%2Fjournal%2Fitem

WPF Solution (I'd check to see if this does what you need first): WPF. Catch last window click anywhere