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我有这个结构：

using BETHEL_SPEAKER_SERVICE_TALK_INFO_S = struct tagBethelSpeakerServiceTalkInfo
{
    CString strHost;
    CString strCohost;
    CString strChairman;
    CString strOpenPrayer;
    CString strSpeaker;
    CString strTheme;
    int iSongOpen{};
    int iSongClose{};
};

它是类中的成员变量：

BETHEL_SPEAKER_SERVICE_TALK_INFO_S GetBethelServiceTalkInfo() const { return m_BSSTI; }

我想将此结构序列化到我的CArchive. 目前我有存储：

ar << m_bSpecialEventBethelServiceTalk;
ar << m_BSSTI.strHost;
ar << m_BSSTI.strCohost;
ar << m_BSSTI.strChairman;
ar << m_BSSTI.strOpenPrayer;
ar << m_BSSTI.strSpeaker;
ar << m_BSSTI.strTheme;
ar << gsl::narrow<WORD>(m_BSSTI.iSongOpen);
ar << gsl::narrow<WORD>(m_BSSTI.iSongClose);

类似的阅读：

ar >> m_bSpecialEventBethelServiceTalk;
ar >> m_BSSTI.strHost;
ar >> m_BSSTI.strCohost;
ar >> m_BSSTI.strChairman;
ar >> m_BSSTI.strOpenPrayer;
ar >> m_BSSTI.strSpeaker;
ar >> m_BSSTI.strTheme;
m_BSSTI.iSongOpen = readAndCast<int, WORD>(ar);
m_BSSTI.iSongClose = readAndCast<int, WORD>(ar);

是否可以向结构本身添加<<和运算符？>>

我是尝试operator<<链接答案中提到的新手，但我遇到了问题。例如，我试过：

friend CArchive operator<<(CArchive& rArchive, BETHEL_SPEAKER_SERVICE_TALK_INFO_S const& rsBSSTI)
{
    return  rArchive << rsBSSTI.strHost
                     << rsBSSTI.strCohost
                     << rsBSSTI.strChairman
                     << rsBSSTI.strOpenPrayer
                     << rsBSSTI.strSpeaker
                     << rsBSSTI.strTheme
                     << gsl::narrow<WORD>(rsBSSTI.iSongOpen)
                     << gsl::narrow<WORD>(rsBSSTI.iSongClose);

在我的代码的另一部分：

ar << m_BSSTI;

但是当我编译时：

7>D:\My Programs\2022\MeetSchedAssist\Meeting Schedule Assistant\SpecialEventManager.h(44,49): error C2061: syntax error:

标识符 'BETHEL_SPEAKER_SERVICE_TALK_INFO_S' 7>D:\My Programs\2022\MeetSchedAssist\Meeting Schedule Assistant\SpecialEventManager.h(45,2): error C2805: binary 'operator <<' 参数太少 7>D:\My Programs\ 2022\MeetSchedAssist\Meeting Schedule Assistant\SpecialEventManager.h(46,3)：错误 C2059：语法错误：'return' 7>D:\My Programs\2022\MeetSchedAssist\Meeting Schedule Assistant\SpecialEventManager.h(53,48) : 错误 C2238: ';' 前面的意外标记 7>D:\My Programs\2022\MeetSchedAssist\Meeting Schedule Assistant\SpecialEventManager.h(55,1): error C2143: syntax error: missing ';' 在 '}' 7>D:\My Programs\2022\MeetSchedAssist\Meeting Schedule Assistant\SpecialEventManager.h(55,1) 之前：错误 C2059：语法错误：'}' 7>AssignSelectedColumnDlg.cpp

到目前为止，这是完整的：

using BETHEL_SPEAKER_SERVICE_TALK_INFO_S = struct tagBethelSpeakerServiceTalkInfo
{
    CString strHost;
    CString strCohost;
    CString strChairman;
    CString strOpenPrayer;
    CString strSpeaker;
    CString strTheme;
    int iSongOpen{};
    int iSongClose{};

    friend CArchive& operator<<(CArchive& rArchive, BETHEL_SPEAKER_SERVICE_TALK_INFO_S const& rsBSSTI)
    {
        return  rArchive << rsBSSTI.strHost << rsBSSTI.strCohost
                         << rsBSSTI.strChairman
                         << rsBSSTI.strOpenPrayer
                         << rsBSSTI.strSpeaker
                         << rsBSSTI.strTheme
                         << gsl::narrow<WORD>(rsBSSTI.iSongOpen)
                         << gsl::narrow<WORD>(rsBSSTI.iSongClose);
    }
};

上面的第一个错误在第 44 行，即：

friend CArchive& operator<<(CArchive& rArchive, BETHEL_SPEAKER_SERVICE_TALK_INFO_S const& rsBSSTI)
4

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