HKEYhKey;DWORDdwType=REG_SZ;DWORDdwSize=255;//须指定长度,否则第一次读取RegQueryValueEx不成功，仅返回长度TCHARdata[MAX_PATH];boolret;if(RegOpenKey(HKEY_LOCAL_MACHINE,_T("SOFTWARE\\Microsoft\\WindowsNT\\CurrentVersion"),&hKey)==ERROR_SUCCESS)TRACE(_T("opensuccess"));ret=RegQueryValueEx(hKey,_T("ProductName"),NULL,&dwType,(LPBYTE)data,&dwSize)==ERROR_SUCCESS;CStringstrWinVerName=data;AfxMessageBox(strWinVerName);RegCloseKey(hKey);