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DirectX - SlimDX - LayeredWindow with D2DGdiInteropRenderTarget

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I am relatively new in DirectX programing and I've some trouble get my program working properly.
The thing I want to achive is a LayeredWindow with hardware acceleration as described in this article: https://msdn.microsoft.com/magazine/ee819134.aspx
I wanna achieve this whole thing in C# with the SlimDX library.

This is my code so far:

	int w = 100;
	int h = 100;
	SlimDX.Direct2D.RenderTargetProperties props = new SlimDX.Direct2D.RenderTargetProperties();
	props.Type = SlimDX.Direct2D.RenderTargetType.Default;
	props.PixelFormat = new SlimDX.Direct2D.PixelFormat(SlimDX.DXGI.Format.B8G8R8A8_UNorm, SlimDX.Direct2D.AlphaMode.Premultiplied);
	SlimDX.Direct2D.Factory f = new SlimDX.Direct2D.Factory(SlimDX.Direct2D.FactoryType.SingleThreaded);

	SlimDX.Direct3D10_1.Device1 d = new SlimDX.Direct3D10_1.Device1(DriverType.Hardware, DeviceCreationFlags.BgraSupport, FeatureLevel.Level_10_0);
	Texture2DDescription description = new Texture2DDescription();
	description.ArraySize = 1;
	description.BindFlags = BindFlags.RenderTarget;
	description.Format = SlimDX.DXGI.Format.B8G8R8A8_UNorm;
	description.Width = w;
	description.Height = h;
	description.MipLevels = 1;
	description.SampleDescription = new SlimDX.DXGI.SampleDescription() {
		Count = 1
	description.OptionFlags = ResourceOptionFlags.GdiCompatible;
	Texture2D texture = new Texture2D(d, description);
	SlimDX.DXGI.Surface surface = texture.AsSurface();
	SlimDX.Direct2D.RenderTarget target = SlimDX.Direct2D.RenderTarget.FromDXGI(f, surface, props);

	SlimDX.Direct2D.GdiInteropRenderTarget gdiTarget = new SlimDX.Direct2D.GdiInteropRenderTarget(target);

	IntPtr dc = gdiTarget.GetDC(SlimDX.Direct2D.DeviceContextInitializeMode.Copy);

The following error occours at the last line: "SlimDX.Direct2D.Direct2DException: D2DERR_TARGET_NOT_GDI_COMPATIBLE: The render target is not compatible with GDI (-2003238886)"
I don't understand why. I've set my Texture OptionFlags to "ResourceOptionFlags.GdiCompatible".

Hopefully someone with more experience can help me to achieve my goal.

Best regards!

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