File version information

Posted by Raz on February 25, 2007 Leave a comment (0) Go to comments

Q: How can I get file version information from my own exe/dll or any other file?
A: The VerQueryValue function retrieves specified version information from the specified version-information resource. To retrieve the appropriate resource, before you call VerQueryValue, you must first call the GetFileVersionInfoSize function, and then the GetFileVersionInfo function.

Here is a funtion that will extract version number vrom your own exe if ModulePath doesn’t point to a file path:

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bool GetFileVersionInformation(char *Result,char *ModulePath)

{

  LPVOID lpStr1 = NULL;

  LPVOID lpStr2 = NULL;

  WORD* wTmp;

  DWORD dwHandlev = NULL;

  UINT nRet;

  UINT dwLength;

  char sFileName[1024]={0};

  char sTmp[1024]={0};

  char *sInfo;

  LPVOID* pVersionInfo;

  bool Success=false;

  if (Result==NULL) return Success;

  if (ModulePath==NULL)

    GetModuleFileName(NULL,sFileName,1024);

  else

    strcpy(sFileName,ModulePath);

  DWORD dwInfoSize = GetFileVersionInfoSize((char*)(LPCTSTR)sFileName, &dwHandlev);

  if (dwInfoSize)

  {

      pVersionInfo = new LPVOID[dwInfoSize];

      nRet = GetFileVersionInfo((char*)(LPCTSTR)sFileName, dwHandlev, dwInfoSize, pVersionInfo);

    if(nRet)

     {

      nRet = VerQueryValue(pVersionInfo, "\\VarFileInfo\\Translation", &lpStr1, &dwLength);

      if(nRet)

       {

         wTmp = (WORD*)lpStr1;

         sprintf(sTmp,"\\StringFileInfo\\%04x%04x\\FileVersion", *wTmp, *(wTmp + 1));

         nRet = VerQueryValue(pVersionInfo, sTmp, &lpStr2, &dwLength);

         if(nRet)

           {

             sInfo = (char*)lpStr2;

             strcpy(Result,sInfo);

             Success=true;

           }

        }

      }

      delete[] pVersionInfo;

   }

  return Success;

}

Using it is simple:

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//------------------------------

char bf[2556];

//get your exe version:

GetFileVersionInformation(bf,NULL);

MessageBox ( 0,bf,"",0);

//get a file version:

GetFileVersionInformation(bf,"c:\\MyFolder\\application.exe");

MessageBox ( 0,bf,"",0);

//-----------------