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m_oPresentParameters = new PresentParameters();

            m_oPresentParameters.SwapEffect = SwapEffect.Discard;
            m_oPresentParameters.Windowed = true;
            m_oDevice = new Device(0, DeviceType.Reference, this, CreateFlags.SoftwareVertexProcessing,m_oPresentParameters);                    

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              //vertex Buffer erstellen
                VertexBuffer oVertexBuffer = new VertexBuffer(typeof(CustomVertex.TransformedColored), 4, form.RenderDevice, Usage.SoftwareProcessing, CustomVertex.TransformedColored.Format, Pool.Managed);


                CustomVertex.TransformedColored[] oVerts = null;


                oVerts = (CustomVertex.TransformedColored[])oVertexBuffer.Lock(0, LockFlags.None);

                oVerts[0].X = 50;
                oVerts[0].Y = form.ClientSize.Height - 50;
                oVerts[0].Color = Color.Red.ToArgb();

                oVerts[1].X = 50;
                oVerts[1].Y = 50;
                oVerts[1].Color = Color.Blue.ToArgb();

                oVerts[2].X = form.ClientSize.Width-50;
                oVerts[2].Y = form.ClientSize.Height-50;
                oVerts[2].Color = Color.Green.ToArgb();

                oVerts[3].X = form.ClientSize.Width-50;
                oVerts[3].Y = 50;
                oVerts[3].Color = Color.Yellow.ToArgb();                    

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public void Render(RenderDelegate oDelegate)
        {
            if (m_oDevice == null)
                return;

            m_oDevice.Clear(ClearFlags.Target, Color.Blue, 1.0f, 0);
            m_oDevice.BeginScene();

            if (oDelegate != null)
                oDelegate();

            m_oDevice.EndScene();
            m_oDevice.Present();
        }