在Windows NT/W2K下,如何枚举出所有安装的 NT Service服务程序名字,就象SCM那样

Question

忘了从哪抄的了:void CNetSearchDlg::CheckService(char * pHostName)
{
char sBuf[256];
UINT nCount = 1, nItemCount = 0; 
ENUM_SERVICE_STATUS *lpSrv = (ENUM_SERVICE_STATUS *)malloc(sizeof(ENUM_SERVICE_STATUS));
DWORD dwNeeded = 0, dwSrvRet = 0, dwResumeHandle = 0; dwResumeHandle = 0; SC_HANDLE hSCManager = OpenSCManager(pHostName, NULL, GENERIC_READ); int temp = GetLastError();_retry_:
BOOL bRet = EnumServicesStatus(hSCManager, 
SERVICE_WIN32, SERVICE_STATE_ALL, lpSrv, sizeof(ENUM_SERVICE_STATUS) * nCount, 
&dwNeeded, &dwSrvRet, &dwResumeHandle); for(UINT x = 0; x < dwSrvRet; x++)
{
nItemCount++; CString strAux;
sprintf(sBuf,"%-30s : %s\n",lpSrv[x].lpDisplayName,lpSrv[x].lpServiceName); m_list.InsertString(-1,sBuf); } if(!bRet)
{
int g_dwLastError = GetLastError(); if((g_dwLastError == ERROR_MORE_DATA) || (nCount * sizeof(ENUM_SERVICE_STATUS) < dwNeeded))
{
nCount++; if(lpSrv)
{
lpSrv = (ENUM_SERVICE_STATUS *)realloc(lpSrv, 
sizeof(ENUM_SERVICE_STATUS) * nCount);
if(!lpSrv)
goto _exit_;
}
else
{
lpSrv = (ENUM_SERVICE_STATUS *)malloc(sizeof(ENUM_SERVICE_STATUS) * nCount);
if(!lpSrv)
goto _exit_;
} goto _retry_;
}
else
goto _exit_;
}_exit_:
if(lpSrv)
free(lpSrv);
CloseServiceHandle(hSCManager);
}

Answer 1

BOOL EnumServicesStatus(
  SC_HANDLE hSCManager,             // handle to SCM database
  DWORD dwServiceType,              // service type
  DWORD dwServiceState,             // service state
  LPENUM_SERVICE_STATUS lpServices, // status buffer
  DWORD cbBufSize,                  // size of status buffer
  LPDWORD pcbBytesNeeded,           // buffer size needed
  LPDWORD lpServicesReturned,       // number of entries returned
  LPDWORD lpResumeHandle            // next entry
);
     轻风又伤心了:2002-06-04
     ____     ____
     \ p \   / g /
      \ l \_/ n /
       \ a   o /
        \ i s /
         \ n /
          \_/

Answer 2

Thank you seanzhao(新云) and plainsong(伤心的风) 
I solved my problem with your suggestion.