WPF中的Ctrl键按下条件MouseLeftButtonDown事件处理程序

Question

如何给特定的键盘键添加附加条件到WPF MouseLeftButtonDown事件处理程序？

例如按Ctrl +关键

private void Grid_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) 
{   
    ... 
} 

Answer 1

private void Grid_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) { 
    if(Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl)) { 
     MessageBox.Show("Control key is down"); 
    } else { 
     MessageBox.Show("Control key is up"); 
    } 
} 

Answer 2

如果你想只检测改性剂，还可以使用：

if (Keyboard.Modifiers == ModifierKeys.Control) {} 
if (Keyboard.Modifiers == ModifierKeys.Shift) {} 

等更多here。

Answer 3

在.NET 4.0中，你可以使用：

Keyboard.Modifiers.HasFlag(ModifierKeys.Control)