WinForm和WPF 屏蔽Alt+F4键

时间：2011-01-30 来源：面壁居士

WinForm：比WPF稍简单些

1         private void MyForm_KeyDown(object sender, KeyEventArgs e)
2         {
3             if (e.KeyCode == Keys.F4 && e.Modifiers == Keys.Alt)
4             {
5                 e.Handled = true;
6             }
7         }

WPF：只要在PreviewKeyDown和PreviesKeyUp中做处理即可，代码如下：

1         private bool AltDown = false;
2         private void Window_PreviewKeyDown(object sender, KeyEventArgs e)
3         {
4
5             if (e.SystemKey == Key.LeftAlt || e.SystemKey == Key.RightAlt)
6             {
7                 AltDown = true;
8             }
9             else if (e.SystemKey == Key.F4 && AltDown)
10             {
11                 e.Handled = true;
12             }
13             //else if (e.SystemKey == …… && AltDown) // 可以在此处添加自己需要的快捷键。
14             //{
15             //    this.Close();
16             //}
17         }
18
19         private void Window_PreviewKeyUp(object sender, KeyEventArgs e)
20         {
21             if (e.SystemKey == Key.LeftAlt || e.SystemKey == Key.RightAlt)
22             {
23                 AltDown = false;
24             }
25         }

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