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