正在链接...
XBT Client.obj : error LNK2019: 无法解析的外部符号 "public: __thiscall Cserver::~Cserver(void)" (??1Cserver@@QAE@XZ) ，该符号在函数 "public: virtual __thiscall CXBTClientDlg::~CXBTClientDlg(void)" (??1CXBTClientDlg@@UAE@XZ) 中被引用
XBT ClientDlg.obj : error LNK2001: 无法解析的外部符号 "public: __thiscall Cserver::~Cserver(void)" (??1Cserver@@QAE@XZ)
XBT ClientDlg.obj : error LNK2019: 无法解析的外部符号 "public: int __thiscall Cserver::open_url(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?open_url@Cserver@@QAEHABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) ，该符号在函数 "public: void __thiscall CXBTClientDlg::open_url(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?open_url@CXBTClientDlg@@QAEXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) 中被引用

XBT ClientDlg.obj : error LNK2019: 无法解析的外部符号 "public: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall Cserver::get_url(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?get_url@Cserver@@QAE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@ABV23@@Z) ，该符号在函数 "protected: void __thiscall CXBTClientDlg::OnPopupCopy(void)" (?OnPopupCopy@CXBTClientDlg@@IAEXXZ) 中被引用

XBT ClientDlg.obj : error LNK2019: 无法解析的外部符号 "public: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall Cserver::completes_dir(void)const " (?completes_dir@Cserver@@QBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@XZ) ，该符号在函数 "protected: void __thiscall CXBTClientDlg::OnPopupExplore(void)" (?OnPopupExplore@CXBTClientDlg@@IAEXXZ) 中被引用
XBT ClientDlg.obj : error LNK2019: 无法解析的外部符号 "public: void __thiscall Cserver::admin_port(int)" (?admin_port@Cserver@@QAEXH@Z) ，该符号在函数 "protected: virtual int __thiscall CXBTClientDlg::OnInitDialog(void)" (?OnInitDialog@CXBTClientDlg@@MAEHXZ) 中被引用

XBT ClientDlg.obj : error LNK2019: 无法解析的外部符号 "public: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall Cserver::incompletes_dir(void)const " (?incompletes_dir@Cserver@@QBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@XZ) ，该符号在函数 "public: void __thiscall CXBTClientDlg::open(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,bool)" (?open@CXBTClientDlg@@QAEXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@_N@Z) 中被引用

XBT ClientDlg.obj : error LNK2019: 无法解析的外部符号 "public: int __thiscall Cserver::file_state(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,enum Cbt_file::t_state)" (?file_state@Cserver@@QAEHABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@W4t_state@Cbt_file@@@Z) ，该符号在函数 "public: void __thiscall CXBTClientDlg::set_torrent_state(enum Cbt_file::t_state)" (?set_torrent_state@CXBTClientDlg@@QAEXW4t_state@Cbt_file@@@Z) 中被引用

那应该在文件编译的过程中就出错吧
怎么会是文件编译后，最后链接的时候出错呢？