本节中，利用前几节的基础，反转显存，将后续显存上的图片反转到主显存上，并显示在屏幕上，并将建立的directx对象在窗口销毁后删除-this section, the use of the former sections of the foundation reverse memory, will follow-up on the memory-pictures to the main memory, and display on the screen, and will establish t