PowerToys/Wox.Infrastructure/Hotkey/KeyEvent.cs

namespace Wox.Infrastructure.Hotkey
{
    public enum KeyEvent
    {
        /// <summary>
        /// Key down
        /// </summary>
        WM_KEYDOWN = 256,

        /// <summary>
        /// Key up
        /// </summary>
        WM_KEYUP = 257,

        /// <summary>
        /// System key up
        /// </summary>
        WM_SYSKEYUP = 261,

        /// <summary>
        /// System key down
        /// </summary>
        WM_SYSKEYDOWN = 260
    }
}