Baka_MPlayer.GlobalKeyHook.KeyHookManager.callbackFunction_KeyboardHook C# (CSharp) Method

        private int callbackFunction_KeyboardHook(int code, IntPtr wParam, IntPtr lParam)
        {
            // checks bit 30 of WM_KEYDOWN to see the previous key state
            bool isBitSet = (lParam.ToInt64() & (1 << 30)) == 0;

            if (code.Equals(3) && isBitSet)
            {
                OnKeyDown(new KeyCodeEventArgs((Keys)wParam.ToInt32()));
            }

            // return the value returned by CallNextHookEx
            return CallNextHookEx(IntPtr.Zero, code, wParam, lParam);
        }