Is there any way to find out that the mouse left-clicked up events outside an element in wpf?

Question

I am defining an event for my border element that moves the left mouse button outside the bounds of this element.

Answer 1

You can get a mouse event outside of the element that the mouse received if, at the direction of the mouse, you call element.CaptureMouse()(and when you click the mouse, remember to call element.ReleaseMouseCapture()).

Answer 2

        Mouse.Capture (this,CaptureMode.SubTree);
        AddHandler ();

    private void AddHandler()
    {
        AddHandler (Mouse.PreviewMouseDownOutsideCapturedElementEvent,new MouseButtonEventHandler (HandleClickOutsideOfControl),true);
    }