掌握CDC的文字处理程序的编写，如何产生自定义字体和自定义插入符，熟悉对CString类的使用。通过对卡拉OK程序的编写，讲解定时器的使用和DrawText函数的巧妙运用。讲解如何使用CDC的裁减功能。-CDC grasp of the word processing program to prepare, how to generate custom fonts and custom insertion site, and is familiar with the use of CString type. Karaoke OK through the preparation process, explaining the use of timers and the ingenious use of DrawText function. CDC on the use of the reduction function.