Question

我正在尝试使用Visual C ++的任务计划。我正在使用Ctask.h（来自here）做任务。但是，当我构建解决方案（使用Visual Studio 11）时，它说

fatal error C1189: #error :  Please use the /MD switch for _AFXDLL builds

当我切换到/ MD时，它会出现此错误

ConsoleApplication12.obj : error LNK2019: unresolved external symbol "public: __thiscall CTask::CTask(void)" (??0CTask@@QAE@XZ) referenced in function _wmain
1>ConsoleApplication12.obj : error LNK2019: unresolved external symbol "public: void __thiscall CTask::SetStartDateTime(class ATL::CTime const &)" (?SetStartDateTime@CTask@@QAEXABVCTime@ATL@@@Z) referenced in function _wmain
1>ConsoleApplication12.obj : error LNK2019: unresolved external symbol "public: void __thiscall CTask::SetFrequency(enum CTask::ETaskFrequency)" (?SetFrequency@CTask@@QAEXW4ETaskFrequency@1@@Z) referenced in function _wmain
1>ConsoleApplication12.obj : error LNK2019: unresolved external symbol "public: void __thiscall CTask::SetProgram(wchar_t const *)" (?SetProgram@CTask@@QAEXPB_W@Z) referenced in function _wmain
1>ConsoleApplication12.obj : error LNK2019: unresolved external symbol "public: void __thiscall CTask::SetAccountName(wchar_t const *)" (?SetAccountName@CTask@@QAEXPB_W@Z) referenced in function _wmain
1>ConsoleApplication12.obj : error LNK2019: unresolved external symbol "public: long __thiscall CTask::SaveTask(wchar_t const *,int)const " (?SaveTask@CTask@@QBEJPB_WH@Z) referenced in function _wmain
1>ConsoleApplication12.obj : error LNK2019: unresolved external symbol "public: virtual __thiscall CTask::~CTask(void)" (??1CTask@@UAE@XZ) referenced in function _wmain

其他链接选项也是如此。这是我输入的代码：

#include "stdafx.h"
#include "CTask.h"
#include <iostream>
using namespace std;




int _tmain(int argc, _TCHAR* argv[])
{
    CTask task;
    CTime time(2013, 03, 15, 7, 11, 0);
    LPCTSTR sTaskName( L"Task Name" );

    BOOL replace = TRUE;

    task.SetProgram( L"E:\\aaa.txt" );
    task.SetAccountName( L"harshilsharma63" );
    task.SetStartDateTime( time );
    task.SetFrequency( CTask::freqOnce );

    if( S_OK == task.SaveTask( sTaskName, replace))
    {
        cout << "task successfully created!";
        return 0;
    }
    else
    {
        cout << "task creation failed!";
        return 1;
    }


    return 0;
}

我已经将“使用MFC”设置为“在共享DLL中使用MFC”。

Answer 1

我没有看到任何迹象表明您确实已将CTask.cpp放入项目中。仅包含标题将导致您看到的链接器错误，您也需要.cpp。

Answer 2

您需要在项目中添加CTask.cpp以及CTask.h。原始项目http://www.codeproject.com/Articles/13089/Harnessing-the-task-scheduler可以毫无困难地编译 - 我只是检查了它！

MFC在库中使用导致错误控制台应用程序

2 个答案: