vc实现的反射机制VIP

此前做项目用过 C 和 JAVA 提供的反射机制的支持 C 没有直接提供 需要自己实现 经过一段时间的思考 我想到用宏定义的方式来实现把 字符串映射成类的方法 include stdafx h include stdlib h include include using namespace std class BaseClass public virtual bool DoWork const 0 typedef BaseClass CreateObjectFunctionPtr namespace ClassFactory map regClassList void RegisterClass string strKey CreateObjectFunctionPtr CreateObjFun regClassList insert pair strKey CreateObjFun BaseClass CreateInstance string className CreateObjectFunctionPtr createFun NULL for map iterator it regClassList begin it regClassList end it if className it first createFun it second if createFun return createFun return NULL void ReleaseObject BaseClass instance if instance delete instance instance NULL define REG CLASS ClassName ClassFactory RegisterClass ClassName ClassName CreateInstance define REFLECTABLE CLASS ClassName public static BaseClass CreateInstance BaseClass ref BaseClass new ClassName return ref class SubClass1 public BaseClass REFLECTABLE CLASS SubClass1 public bool DoWork const printf I m SubClass1 n return true class SubClass2 public BaseClass REFLECTABLE CLASS SubClass2 public bool DoWork const printf I m SubClass2 n return true int main int argc char argv REG CLASS SubClass1 注册类 REG CLASS SubClass2 注册类 SubClass subClassInstance BaseClass instance instance ClassFactory CreateInstance SubClass2 可以选用 SubClass1 或 SubClass2 if instance in