VC学习之注册回调函数

VC中注册回调函数

回调函数的声明如下：

extern "C"  __declspec(dllexport)  void   _stdcall initialize(HWND gmyhWnd,const char* fileName, const char* eventFileName,const char* dbFilePath,FPConnectSCSCallbackProc connectCallback,FPRequestCallbackProc requestCallbackProc,FPControlSSCallbackProc ssStatusCallbackPro);extern "C"  __declspec(dllexport)  int    _stdcall subscribeEvent(void* session,const char* cStrategyID, const char* cEventID, const char* cVersionID);extern "C"  __declspec(dllexport)  int    _stdcall sendEvent(int handle, void* session);extern "C"  __declspec(dllexport)  int    _stdcall sendEventByRequestId(int handle, void* session, int requestId);

 

C# 的调用方式：

MethodFormCppDll.setStatusCallback(CallBackClass.ImStatusCallbackProc, CallBackClass.QutoStatusCallbackProc, CallBackClass.ConnectionCallbackProc, CallBackClass.ServerTimeCallback);            MethodFormCppDll.setSSCallbacks(CallBackClass.SSStatusCallbackProc, CallBackClass.SSEventCallbackProc, CallBackClass.SCSEventCallbackProc);            MethodFormCppDll.setSSLCertificateFilePath(Application.StartupPath + "\\ca.crt", Application.StartupPath + "\\server.crt", Application.StartupPath + "\\server.key");

            

 

其中 CallBackClass.ImStatusCallbackProc 是一个delegate,指向的函数的参数同上面声明的参数相同

public delegate void FPModifyDataCallbackProc(string clientMessageID, string result, string errorInfo);public delegate void FPQueryDataCallbackProc(string clientMessageID, int dbType, int dataCount, string errorInfo);

    

 

VC的调用方式：

引用头文件后，直接将函数名传入即可

setStatusCallback(LMStatusCallbackProc,QutoStatusCallbackProc,CALPServerstatusCallbackProc,STimeCallbackProc); setSSCallbacks(SSStatusCallbackProc,SSEventCallbackProc,SCSEventCallbackProc); setSSLCertificateFilePath( m_currentPath+"\\ca.crt",m_currentPath+"\\server.crt",m_currentPath+\\server.key);

 

以下是函数定义，函数不能放在类中。

//查询数据状态回调void  _stdcall QueryDataCallbackProc(const char* clientMessageID, int gHandle, int dataCount, const char* errorInfo){ } //策略状态void  _stdcall SSStatusCallbackProc(const char* protfolioID, const char* strategyID, const char* version, int status, void* client){ } //策略事件回调void  _stdcall SSEventCallbackProc(int evthandle, void* client, int requestID){ }