回调函数的实现 & 结构体的继承

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#pragma once

//消息类型定义
static const DWORD MESSAGE_TYPE_2PARAM     = 1;    // 两个填充参数

static const DWORD SVCMSG_CONTENT_LEN      = 1024; // 即时消息内容最大长度
static const DWORD SVCMSG_RESULT_LEN       = 16;   // 即时消息结果最大长度

#pragma pack(8)
//回调消息
typedef struct STRUC_BASIC_MESSAGE{
    DWORD    dwSvcType;
    DWORD    dwMsgType;
} BASIC_MESSAGE, *pBASIC_MESSAGE;

//回调消息
typedef struct STRUC_BASIC_MESSAGE_EX : public BASIC_MESSAGE{
    char   chContent[SVCMSG_CONTENT_LEN];
    char   chResult[SVCMSG_RESULT_LEN];
} BASIC_MESSAGE_EX, *pBASIC_MESSAGE_EX;

//消息回调函数原型
typedef DWORD (__stdcall *pMsgBack)(const BASIC_MESSAGE *struMessage);

#endif

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pMsgBack            m_pMsgFunc; // 服务框架打印消息回调

CMSERVICE_API int WINAPI CMSvc_SetMsgCallback(const pMsgBack msgfunc)
{
    if (NULL == msgfunc)
    {
        return -1;
    }
    CGlobal::SnglPtr()->m_pMsgFunc = msgfunc;
    return CMSvc_NO_ERROR;
}

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void CGlobal::PrintMsgUtf8(const std::string  & sMsg)
{
    if (NULL == m_pMsgFunc)
    {
        return;
    }

    BASIC_MESSAGE_EX msgEx;
    //需要根据具体的服务器类型修改下面的参数
    msgEx.dwSvcType = cms_8100::MT_SERVICE_CMS;//数据服务器
    msgEx.dwMsgType = MESSAGE_TYPE_2PARAM;
    wstring wsTime = GetCurTimeWStr();
    string sMsgWithTime = myutils::UTF8_W2A(wsTime) + sMsg;
    strcpy_s(msgEx.chContent, sMsgWithTime.c_str());
    strcpy_s(msgEx.chResult, "");
    m_pMsgFunc(&msgEx);
}

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