glfwMakeContextCurrent(window); // This must be befor creating Noesis VGContext. If this is not before Noesis::VGContext, program crash.
// Noesis Initialization
        Ptr<FrameworkElement> xaml = Noesis::GUI::LoadXaml<FrameworkElement>("my.xaml"); 
        Ptr<FrameworkElement> xamlElementChooseWin = Noesis::GUI::LoadXaml<FrameworkElement>("choicer.xaml");
	xamlView = Noesis::GUI::CreateView(xaml.GetPtr());
	xamlView->SetAntialiasingMode(Noesis::Gui::AntialiasingMode_MSAA);

	xamlViewChoicer = Noesis::GUI::CreateView(xamlElementChooseWin.GetPtr());
	xamlViewChoicer->SetAntialiasingMode(Noesis::Gui::AntialiasingMode_MSAA);

	Ptr<GLRenderDevice> device = *new GLRenderDevice();
	VGOptions options;
	Ptr<VGContext> context = Noesis::GUI::CreateVGContext(device.GetPtr(), Noesis::VGOptions());
	xamlView->GetRenderer()->Init(context.GetPtr());
	xamlViewChoicer->GetRenderer()->Init(context.GetPtr());

while (pravda == true)
	{
		if (pravda == true)
		{
			glfwMakeContextCurrent(window);
			// window and mouse data
			glfwGetWindowSize(window, &windowWidth, &windowHeight);
			glfwGetFramebufferSize(window, &bufWinWidth, &bufWinHeight);
			glfwGetCursorPos(window, &mouse_x_pos, &mouse_y_pos);
			NSmouse::x = (NsInt)mouse_x_pos;
			NSmouse::y = (NsInt)mouse_y_pos;

			// Noesis GUI
			xamlView->Update(glfwGetTimerValue() / 1000.0); // / 1000.0
			Noesis::IRenderer * nRender = xamlView->GetRenderer();
			nRender->UpdateRenderTree();

			if (nRender->NeedsOffscreen())
			{
				nRender->RenderOffscreen();
			}
			glViewport(0, 0, bufWinWidth, bufWinHeight);
			glClear(GL_COLOR_BUFFER_BIT); //  | GL_ACCUM_BUFFER_BIT | GL_STENCIL_BUFFER_BIT
			glClearColor(0.0f, 0.0f, 0.0f, 0.5f);
			if (glfwGetWindowAttrib(window, GLFW_FOCUSED))
			{
				xamlView->MouseMove((NsInt)NSmouse::x, (NsInt)NSmouse::y);
			}
			nRender->Render();
			// GLFW

			glfwPollEvents();

			if (xamlView != 0)
			{
				xamlView->SetSize(windowWidth, windowHeight);
			}
			glfwSwapBuffers(window);
			if (glfwWindowShouldClose(window)) { pravda = false; blab = false; }
		}
		if (blab == true)
		{
			glfwMakeContextCurrent(windowChoose);
			// window and mouse data
			glfwGetWindowSize(windowChoose, &windowWidth, &windowHeight);
			glfwGetFramebufferSize(windowChoose, &bufWinWidth, &bufWinHeight);
			glfwGetCursorPos(windowChoose, &mouse_x_pos, &mouse_y_pos);
			NSmouse::x = (NsInt)mouse_x_pos;
			NSmouse::y = (NsInt)mouse_y_pos;

			// Noesis
			xamlViewChoicer->Update(glfwGetTimerValue() / 1000.0); //
			Noesis::IRenderer * nRender = xamlViewChoicer->GetRenderer();
			nRender->UpdateRenderTree();
			if (nRender->NeedsOffscreen())
			{
				nRender->RenderOffscreen();
			}

			glViewport(0, 0, bufWinWidth, bufWinHeight);
			glClear(GL_COLOR_BUFFER_BIT);
			glClearColor(0.2f, 0.2f, 0.8f, 1.0f);
			if (xamlViewChoicer != 0)
			{
				xamlViewChoicer->SetSize(windowWidth, windowHeight);
			}
			nRender->Render();
			
			glfwSwapBuffers(windowChoose);
			glfwPollEvents();
			if (glfwWindowShouldClose(windowChoose)) { blab = false; glfwDestroyWindow(windowChoose); }
		}
	}