Question

I have the follwing code (which is not working):

private void Window_PreviewKeyDown(object sender, KeyEventArgs e) {
    e.Handled = true;
    if ((e.Key == Key.P) && (Keyboard.Modifiers == ModifierKeys.Alt)) {
        MessageBox.Show("Thanks!");
    }            
}

Why doesn’t this work? The event is firing, but

(e.Key == Key.P) && (Keyboard.Modifiers == ModifierKeys.Alt))

never evaluates to true.
My similar events using Ctrl instead of Alt in this way work. Also my events that include Ctrl and Alt work as well.

Answer 1

A better way to work with keys in WPF is Key Gestures

e.g. note that this is an example, not a solution

<Window.InputBindings>
  <KeyBinding Command="ApplicationCommands.Open" Gesture="ALT+P" />
</Window.InputBindings>

There’s more to it that that but you’ll work it easily enough. That’s the WPF way to handle keys!

PK 🙂