DLL 文件的简单应用例子，该文件为一个完整的工程，打开直接可用。使用该工程可以对dll文件的编写有清楚地认识-Simple application example of the DLL file, the file is a complete project, opens directly available. Use of the project can be clearly dll file preparation

动态库的生成和调用，采用关键字方式，简单易学。-The generation of dynamic libraries and calls, using keywords