SlimDX RawInput with WPF

Question

I'm trying to set up keyboard and mouse controls for a space game using SlimDX and RawInput. My current code is as follows:

Device.RegisterDevice(UsagePage.Generic, UsageId.Keyboard, DeviceFlags.None);
Device.KeyboardInput += new EventHandler<KeyboardInputEventArgs>(keyboardInput);
Device.RegisterDevice(UsagePage.Generic, UsageId.Mouse, DeviceFlags.None);
Device.MouseInput += new EventHandler<MouseInputEventArgs>(mouseInput);

However I read here: http://code.google.com/p/slimdx/issues/detail?id=785 that for WPF I need to use a different overload for Device.RegisterDevice(), as well as assigning a HandleMessage using Device.HandleMessage(IntPtr message)

I've found the correct overload for RegisterDevice() which is:

RegisterDevice(UsagePage usagePage, UsageId usageId, DeviceFlags flags, IntPtr target, bool addThreadFilter)

What I can't work out, though, is:

1) Now that I have to use a target, what am I meant to set as a target?

2) Where do I get this IntPtr message from?

Answer 1

This might help, I made this for a game of pong. Hope it helps

            private void Form1_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Down)
        {
            spaceKeyDown = true;
        }
        if (e.KeyCode == Keys.Up)
        {
            spaceKeyUp = true;
        }
        if (e.KeyCode == Keys.W)
        {
            spaceKeyW = true;
        }
        if (e.KeyCode == Keys.S)
        {
            spaceKeyS = true;
        }
        if (direction == 0)
        {
            if (e.KeyCode == Keys.Space)
            {
                Random rand = new Random();
                direction = rand.Next(1, 5);
            }
        }
    }

    private void Form1_KeyUp(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Down)
        {
            spaceKeyDown = false;
        }
        if (e.KeyCode == Keys.Up)
        {
            spaceKeyUp = false;
        }
        if (e.KeyCode == Keys.W)
        {
            spaceKeyW = false;
        }
        if (e.KeyCode == Keys.S)
        {
            spaceKeyS = false;
        }
    }
    private void timer1_Tick(object sender, EventArgs e)
    {
        if (spaceKeyDown == true)
        {
            if (p2y < picPicture.Height - Paddle2.Height)
                p2y += 15;
        }
        if (spaceKeyUp == true)
        {
            if (p2y > 0)
                p2y -= 15;
        }
        if (spaceKeyS == true)
        {
            if (p1y < picPicture.Height - Paddle1.Height)
                p1y += 15;
        }
        if (spaceKeyW == true)
        {
            if (p1y > 0)
                p1y -= 15;
        }
    }