WPF。捕捉最后一个窗口点击任何地方 [英] WPF. Catch last window click anywhere

问题描述

有没有一个类可以捕获应用程序中的最后一次点击？像

Is there anyway that a class can catch the last click in the application? Something like

public class MyClickManagerClass
{
    public MyClickManagerClass()
    {
        // subscribe to a global click event
    }

    private void GlobalClickEventHandler(object sender, EventArgs e)
    {
        // do something with the click here
    }
}

感谢您的时间！

推荐答案

如果你只关心在给定的窗口中捕获鼠标点击， code> MouseDown 或 PreviewMouseDown 在窗口级别执行。

If you only care to capture mouse clicks anywhere in a given Window, simply subscribing to the MouseDown or PreviewMouseDown at the window level does the trick.

如果你真的希望它是全局的（而不仅仅是窗口），你应该订阅 InputManager.PreProcessInput 或 InputManager .PostProcessInput 事件并监视鼠标事件：

If you really want it to be global to the application (and not just to the window), you should subscribe to the InputManager.PreProcessInput or InputManager.PostProcessInput event and watch for mouse events:

public MyClickManagerClass()
{
  InputManager.Current.PreProcessInput += (sender, e) =>
  {
    if(e.StagingItem.Input is MouseButtonEventArgs)
      GlobalClickEventHandler(sender,
        (MouseButtonEventArgs)e.StagingItem.Input);
  }
}

请注意，sender始终是InputManager，您可以将坐标映射到其他控件与 MouseEventArgs.GetPosition（visual）。

Note that "sender" will always be the InputManager but you can map coordinates to other controls with MouseEventArgs.GetPosition(visual).

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