如何在 WPF 中捕获 Ctrl + Tab 和 Ctrl + Shift + Tab？
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How to capture Ctrl + Tab and Ctrl + Shift + Tab in WPF?
提问by FarrEver
What would be some sample code that will trap the Ctrl+Taband Ctrl+Shift+Tabfor a WPF application?
什么是一些示例代码，可以捕获WPF 应用程序的Ctrl+Tab和Ctrl+ Shift+ Tab？
We have created KeyDownevents and also tried adding command bindings with input gestures, but we were never able to trap these two shortcuts.
我们已经创建了KeyDown事件并尝试添加带有输入手势的命令绑定，但我们始终无法捕获这两个快捷方式。
回答by Szymon Rozga
What KeyDown handler did you have? The code below works for me. The one that gives me trouble is: Alt+ Tab, but you didn't ask for that :D
你有什么 KeyDown 处理程序？下面的代码对我有用。给我带来麻烦的是：Alt+ Tab，但您没有要求：D
public Window1()
{
InitializeComponent();
AddHandler(Keyboard.KeyDownEvent, (KeyEventHandler)HandleKeyDownEvent);
}
private void HandleKeyDownEvent(object sender, KeyEventArgs e)
{
if (e.Key == Key.Tab && (Keyboard.Modifiers & (ModifierKeys.Control | ModifierKeys.Shift)) == (ModifierKeys.Control | ModifierKeys.Shift))
{
MessageBox.Show("CTRL + SHIFT + TAB trapped");
}
if (e.Key == Key.Tab && (Keyboard.Modifiers & ModifierKeys.Control) == ModifierKeys.Control)
{
MessageBox.Show("CTRL + TAB trapped");
}
}
回答by mikeB
Gustavo's answer was exactly what I was looking for. We want to validate input keys, but still allow pasting:
古斯塔沃的回答正是我想要的。我们想要验证输入键，但仍然允许粘贴：
protected override void OnPreviewKeyDown(KeyEventArgs e)
{
if ((e.Key == Key.V || e.Key == Key.X || e.Key == Key.C) && Keyboard.IsKeyDown(Key.LeftCtrl))
return;
}
回答by Gus Cavalcanti
You have to use KeyUpevent, not KeyDown...
你必须使用KeyUp事件，而不是KeyDown......
回答by Lev
Working version of Szymon Rozgaanswer (sorry, I can't comment). We don't look on Alt, but it's accounting can be simply added at first if
Szymon Rozga答案的工作版本（抱歉，我无法发表评论）。我们不看 Alt，但它的会计可以简单地添加，如果
public View()
{
InitializeComponent();
AddHandler(Keyboard.PreviewKeyDownEvent, (KeyEventHandler)controlKeyDownEvent);
}
private void controlKeyDownEvent(object sender, KeyEventArgs e)
{
if (e.Key == Key.Tab && Keyboard.Modifiers.HasFlag(ModifierKeys.Control))
{
if (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift))
MessageBox.Show("CTRL + SHIFT + TAB trapped");
else
MessageBox.Show("CTRL + TAB trapped");
}
}
回答by luka
Hi you can use this on keydown event
嗨，您可以在 keydown 事件上使用它
private void OnButtonKeyDown(object sender, KeyEventArgs e)
{
if(Keyboard.IsKeyDown(Key.LeftCtrl) && Keyboard.IsKeyDown(Key.Tab) && Keyboard.IsKeyDown(Key.LeftShift))
{
//
// TODO: somthing here
//
}
}
