API GraphOut

case WM_PAINT:
    	hdc = BeginPaint(hWnd, &ps);
		// TODO: 여기에 그리기 코드를 추가합니다.
		MoveToEx(hdc, 10, 10, NULL);
		LineTo(hdc, 180, 100);
		Rectangle(hdc, 10, 10, 150, 150);
		Ellipse(hdc, 50, 50, 150, 180);
		EndPaint(hWnd, &ps);
		break;