WinKeyboardHook.WPF

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A .NET managed wrapper for low-level keyboard events.

Goals

This project was adapted from Open.WinKeyboardHook and intends to remove dependencies on Windows.Forms and offer some additional features.

Usage

See below or the provided demo.

ViewModel

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using AobD.WinKeyboardHook.WPF;

class MyViewModel : INotifyPropetyChanged
{
    private IKeyboardInterceptor _interceptor;
    
    public MyViewModel()
    {
        _interceptor = new KeyboardInterceptor();
        _interceptor.KeyDown += OnKeyDown;
        _interceptor.KeyUp += OnKeyUp;
    }
    
    public void HookKeyboard()
    {
        _interceptor.StartCapturing();
    }
    
    public void UnhookKeyboard()
    {
        _interceptor.StopCapturing();
    }
    
    private void OnKeyUp(object sender, KeyEventArgs e)
    {
        // handle key up events here
    }
    
    private void OnKeyDown(object sender, KeyEventArgs e)
    {
        // handle key down events here
    }
}   

View

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Take careful note of the Window's MouseDown event; this is required to un-focus the control that will be capturing keyboard input.

// XAML
<Window MouseDown="Window_MouseDown">
    // Misc setup here
    <TextBox GotKeyboardFocus="tb_GotFocus"
             LostKeyboardFocus="tb_LostFocus"/>
</Window>

// Code-behind
private void tb_GotFocus(object sender, RoutedEventArgs e)
{
    (DataContext as MyViewModel).StartCapturing();
}

private void tb_LostFocus(object sender, RoutedEventArgs e)
{
    (DataContext as MyViewModel).StopCapturing();
}

private void Window_MouseDown(object sender, MouseButtonEventArgs e)
{
    Keyboard.ClearFocus();
}

Support

Please submit issues via the issue tracker.

Contributing

Pull requests are welcome. For major changes please open an issue first to discuss your proposed changes.