http://blog.163.com/aiding_001/blog/static/22908192011102224344450/ 某次编写一个COM组件,接口定义好之后,增加了ZRX代码后编译链接,出现如下错误提示,百思不得其解. error LNK2019: unresolved external symbol "public: enum Zcad::ErrorStatus __thiscall ZcDbDatabase::readDwgFile(char const *,int,boo…