“拦截"打开任何工具提示应用程序 [英] "Intercept" the opening of any tooltip appwide

问题描述

当工具提示即将打开时，我想在状态栏中显示我的 wpf 应用程序中任何控件的工具提示文本.

I want to show the text of a tooltip of any control in my wpf app inside a status bar, when a tooltip is about to be opened.

当然，我可以尝试递归遍历主窗口的所有子控件，然后将他们的 ToolTipOpening 事件设置为始终相同的方法.但是有没有更简单的方法?

Of course I could try to loop recursively through all child controls of the main window and set their ToolTipOpening event to always the same method. But is there an easier way ?

类似于 Application.Current.AnyToolTipOpening 事件?

推荐答案

当然，试试这个:

EventManager.RegisterClassHandler(typeof(FrameworkElement), FrameworkElement.ToolTipOpeningEvent, new ToolTipEventHandler(ToolTipHandler));

为从 FrameworkElement 派生的所有类注册一个处理程序.

That registers a handler for all classes that derive from FrameworkElement.

您的处理程序方法可能如下所示:

Your handler method might look like this:

   private void ToolTipHandler(object sender, ToolTipEventArgs e) {
        // To stop the tooltip from appearing, mark the event as handled
        e.Handled = true; 
        FrameworkElement source = e.Source as FrameworkElement; 
        if (source != null) {
            MessageBox.Show(source.ToolTip.ToString()); // or whatever you like
        }
    }

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