c# - WPF MouseLeftButtonDown 事件处理程序中的 Ctrl 键按下条件

Question

如何向 WPF MouseLeftButtonDown 事件处理程序添加特定键盘键的附加条件？

例如Ctrl + 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");
    }
}