//---------------------------------------------------------------------------------------------------------------------
map<string, string> GetServiceList() // get list of services   <service name, display name>
{
    map<string, string> lstResult;
	SC_HANDLE hSCM = OpenSCManager(NULL, NULL, SC_MANAGER_ENUMERATE_SERVICE);
	if( hSCM == NULL )
    {
		return lstResult;
    }
	BYTE bBuffer[ 2048 ] = { 0 };
	DWORD dwResumeHandle =  0 ;
	DWORD cbNeeded;
	DWORD cServices;
	BOOL bContinue;
	DWORD dwError;
	LPENUM_SERVICE_STATUS pStatus;
	do
	{
		bContinue = FALSE;
		pStatus = (LPENUM_SERVICE_STATUS)bBuffer;
		// retrieve a portion of service status information
		if (!EnumServicesStatus(hSCM, SERVICE_WIN32, SERVICE_STATE_ALL,
								pStatus, sizeof(bBuffer), &cbNeeded,
								&cServices, &dwResumeHandle))
		{
			dwError = GetLastError();
			if (dwError != ERROR_MORE_DATA)
			{
				break;
			}
			bContinue = TRUE;
		}
		for (DWORD i =  0 ; i < cServices; i++) 
		{
            lstResult[ pStatus->lpServiceName ] = pStatus->lpDisplayName;
			pStatus++;
		}
	}
	while( bContinue );
	CloseServiceHandle(hSCM);
    return lstResult;
}