// 初期化。
	bool Create(HWND hWnd)
	{
		if (failed(_window.Create(hWnd)))
		{
			return false;
		}
		SIZE sz;
		_window.GetClientSize(sz);

		{
			using namespace std::placeholders;
			_window.AddMessageHandler(WM_SIZE, std::bind(&Impl::OnWindowSizeMessage, this, _1, _2, _3, _4));
			_window.AddMessageHandler(WM_KEYUP, std::bind(&Impl::OnWindowKeyUpMessage, this, _1, _2, _3, _4));
		}
		
		if (failed(_device.Create(hWnd)))
		{
			return false;
		}
		
		if (failed(_renderer.Create(_device)))
		{
			return false;
		}
			
		if (failed(CreateModel()))
		{
			return false;
		}

		ResetProjectionTransform(sz);

		return true;
	}