使用 GetFileVersionInfoSize() 时出现错误 LNK2019

Question

I just included this bit in my already working code, but I am getting an LNK2019 error. I'll paste the error after pasting the code.

The Class CAboutDlg has:

public:

    CStatic m_VersionInfoCtrl;

   virtual BOOL OnInitDialog();

};

The Function itself:

BOOL CAboutDlg::OnInitDialog()

{

   CDialog::OnInitDialog();

   CString inFileName = AfxGetApp()->m_pszExeName;

   inFileName += ".exe";

   void * theVersionInfo;

   void * theFixedInfo;

   unsigned long aVersionInfoSize = GetFileVersionInfoSize ( inFileName , &aVersionInfoSize);

   CString returnString;

   if (aVersionInfoSize)

   {

   theVersionInfo = new char [aVersionInfoSize];

   GetFileVersionInfo ( inFileName, 0 , aVersionInfoSize, theVersionInfo) ;

   unsigned int aSize = 0;

   VerQueryValue( theVersionInfo , "\\" , &theFixedInfo , &aSize);

   if (theFixedInfo)

   {

   VS_FIXEDFILEINFO * aInfo = (VS_FIXEDFILEINFO *) theFixedInfo;

   DWORD dwMajorVersionMsb = HIWORD( aInfo->dwFileVersionMS );

   DWORD dwMajorVersionLsb = LOWORD( aInfo->dwFileVersionMS ); 

   DWORD dwMinorVersionMsb = HIWORD( aInfo->dwFileVersionLS );

   DWORD dwMinorVersionLsb = LOWORD( aInfo->dwFileVersionLS ); 



  returnString.Format("Version %d . %d . %d. %d",dwMajorVersionMsb,dwMajorVersionLsb,dwMinorVersionMsb,dwMinorVersionLsb);

  //memcpy(sVer,returnString.GetBuffer(),returnString.GetLength()+1);

  }

delete theVersionInfo;

   }

   m_VersionInfoCtrl.SetWindowText(returnString);

   return TRUE;  // return TRUE unless you set the focus to a control

   // EXCEPTION: OCX Property Pages should return FALSE

}

....

Its giving me the following three errors:

1.RangemasterGenerator error LNK2019: unresolved external symbol _VerQueryValueA@16 referenced in function "public: virtual int __thiscall CAboutDlg::OnInitDialog(void)" (?OnInitDialog@CAboutDlg@@UAEHXZ)

2.RangemasterGenerator error LNK2019: unresolved external symbol _GetFileVersionInfoA@16 referenced in function "public: virtual int __thiscall CAboutDlg::OnInitDialog(void)" (?OnInitDialog@CAboutDlg@@UAEHXZ)
3.RangemasterGenerator error LNK2019: unresolved external symbol _GetFileVersionInfoSizeA@8 referenced in function "public: virtual int __thiscall CAboutDlg::OnInitDialog(void)" (?OnInitDialog@CAboutDlg@@UAEHXZ)

... I am not able to understand what the problem is. Can anyone help please. Thanks.

Answer 1

You need to link against the library that contains the two functions VerQueryValue and GetFileVersionInfo - the linker doesn't know by default where to find them.

A quick search for the two functions on MSDN suggests that they're both in the system library version.dll and the library you want to link against is version.lib . Just add that to the library list in the linker properties.

Answer 2

The functions GetFileVersionInfo and GetFileVersionInfoSize are defined in Version.dll and Version.lib so make sure, you are liking to the appropriate libraries.

Answer 3

For VS2012 or 2013 add to Project Properties->Linker->Input->Additional Dependencies -> Add Version.lib

Answer 4

I am also getting same error, while upgrading the VS6.0 application to VS2012 platform.

a. error LNK2019: unresolved external symbol _GetFileVersionInfoSizeA@8 referenced in function _main

b. error LNK2019: unresolved external symbol _GetFileVersionInfoA@16 referenced in function _main

c. error LNK2019: unresolved external symbol _VerQueryValueA@16 referenced in function _main

Resolution:

I found that it is due to missing reference to library "Version.lib".

a. For VS6.0 add it to Project Setting->Link->library modules

b. For VS2012 add to Project Properties->Linker->Input->Additional Dependancies and add full lib path to Include directory.