public void ShowWindowWithChildWindow() { Application.InitSysDependencies(); Win32Window windowA = new Win32Window(); windowA.Init((100, 100), (300, 400), WindowTypes.Regular); windowA.Show(); Win32Window windowB = new Win32Window(windowA); windowB.Init((10, 10), (100, 100), WindowTypes.ClientAreaOnly); windowB.Show(); Win32OpenGLRenderer renderer = new Win32OpenGLRenderer(windowA); var meshA = new QuadMesh(new Rect(150, 150, 50, 50), Color.Blue); var meshB = new QuadMesh(new Rect(10, 10, 50, 50), Color.DarkBlue); while (!windowA.Closed) { windowA.MainLoop(() => { renderer.SetRenderingWindow(windowA); renderer.Clear(Color.Rgb(200, 100, 100)); Win32OpenGLRenderer.DrawMesh(OpenGLMaterial.shapeMaterial, meshA, (int)windowA.ClientSize.Width, (int)windowA.ClientSize.Height); renderer.SwapBuffers(); renderer.SetRenderingWindow(windowB); renderer.Clear(Color.Rgb(100, 200, 100)); Win32OpenGLRenderer.DrawMesh(OpenGLMaterial.shapeMaterial, meshB, (int)windowB.ClientSize.Width, (int)windowB.ClientSize.Height); renderer.SwapBuffers(); }); } }