1 void  CreateDir(const string& strPath) 2 { 3     if (PathFileExists(strPath.c_str())) 4     { 5         return; 6     } 7  8     size_t sPrePos = 0; 9     string strTmp = "";10     size_t sPos = strPath.find(‘\\‘);11     if (sPos == string::npos)12     {13         return;14     }15 16     strTmp = strPath.substr(0, sPos + 1);17     if ( !PathFileExists( strTmp.c_str() ) )18     {19         return;20     }21 22     sPrePos = sPos + 1;23     sPos = strPath.find(‘\\‘, sPrePos);24     while (sPos != string::npos)25     {26         strTmp = strPath.substr(0, sPos);27         if (!PathFileExists(strTmp.c_str()))28         {29             CreateDirectory(strTmp.c_str(), NULL);30         }31 32         sPrePos = sPos + 1;33         sPos = strPath.find(‘\\‘, sPrePos);34     }35 36     if (!PathFileExists(strPath.c_str()))37     {38         CreateDirectory(strPath.c_str(), NULL);39     }40 41 }