忽略WPF应用程序中的Alt + F4

Question

如何在WPF应用程序中忽略Alt+ F4？

Answer 1

将其添加到UIElement/FramworkElement您不希望Alt + F4工作的地方.

wnd.KeyDown += new KeyEventHandler(wnd_KeyDown);

void wnd_KeyDown(object sender, KeyEventArgs e)
{
    if ( e.Key == Key.System && e.SystemKey == Key.F4)
    {
        e.Handled = true;
    }
}

Answer 2

您可以启用OnClosing事件TForm并cea.Cancel = true;在cea CancelEventArgs来自OnClosing参数时设置.

http://msdn.microsoft.com/en-us/library/system.windows.forms.form.onclosing.aspx

C#

private void Form1_Closing(Object sender, CancelEventArgs e) {
   e.Cancel = true;
}

C++

void Form1_Cancel( Object^ /*sender*/, CancelEventArgs^ e )
{
   e->Cancel = true;
}

VB.NET

Private Sub Form1_Closing(sender As Object, e As _
   System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
    e.Cancel = True
End Sub 'Form1_Closing

Answer 3

只需在View(Xaml)文件中使用这样的输入绑定:

<Window.InputBindings>
    <KeyBinding Modifiers="Alt" Key="F4" Command="{Binding Path=ToDelegateCommandThatExecuteNothing}" />
</Window.InputBindings>