掌握CDC的文字处理程序的编写，此为一个示例源码，演示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-Master word processing procedures for the preparation of the CDC, this is an example of source code, demonstrates how to generate custom fonts and custom caret, familiar with the use of CString class. The preparation of the karaoke program