写过VB、VC混编入，VB调用C++ DLL can't find dll entry point mConSendExample in *dll

写过VB、VC混编进，VB调用C++ DLL can't find dll entry point mConSendExample in *.dll
windowsXP下：dll 用VC6；调用用VB6

C/C++ code

 .h#define      WM_EXAM                WM_USER+130#ifdef MYPROCESS_EXPORTS#define MYPROCESS_API __declspec(dllexport)#else#define MYPROCESS_API __declspec(dllimport)#endiftypedef struct B{    float Press;    int      Lushu;    int      Flag;}SendDate;MYPROCESS_API void    WINAPI   mConSendExample();.cpp#define MYPROCESS_EXPORTS #include "PLCProcess.h"MYPROCESS_API void WINAPI    mConSendExample(){    SendDate sTemp;    sTemp.Press=100;    sTemp.Lushu=10;    sTemp.Flag=1;    SendMessage(m_ConhWndFrmain,WM_EXAM,0,(LPARAM)&sTemp);//ConhWndFrmain是VB窗口句柄}.defLIBRARY PLCProcessDESCRIPTION 'A C++ dll that can be called from VB'EXPORTS   mConSendExample

VB code

模块中Public Declare Sub mConSendExample Lib _"D:\公司软件目录\软件\耐压爆破\标准版\TestPilot_PRB_PLC_ST\PLCProcess.dll" () '例子调用  mConSendExample