WPF检测键序列 [英] WPF detect key sequence

问题描述

我想从我的 WPF 应用程序中隐藏 groupox，并在应用程序处于活动状态(未最小化)时通过按键代码在需要时手动启用它

I would like to hide a groupox from my WPF app and to manually enable it when I need it via a keypress code when app is active(not minimized)

这个例子有时只需要一个按键就可以工作，但我需要一个序列

this example works sometimes with just one keypress, but I need a sequence

protected override void OnPreviewKeyDown(KeyEventArgs e)
    {
        base.OnPreviewKeyDown(e);
        if (e.Key == Key.B)
        {
            bdgb.Visibility = Visibility.Visible;
        }
    }

推荐答案

例如，您可以覆盖窗口的 OnPreviewKeyDown 方法，例如:

You could for example override the OnPreviewKeyDown method of your window, e.g.:

protected override void OnPreviewKeyDown(KeyEventArgs e)
{
    base.OnPreviewKeyDown(e);
    if (e.Key == Key.B)
    {
        //...
    }
}

这篇关于WPF检测键序列的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！