求WINDOWS服务编程实例

我写的，参考一下：
#include <windows.h>
#include <stdio.h>
#include <iostream.h>
#include <stdlib.h>

#define DEFAULT_BEEP_DELAY 3000

char * SERVICE_NAME="BeepService";
HANDLE terminateEvent=NULL;
SERVICE_STATUS_HANDLE serviceStatusHandle;
int beepDelay=DEFAULT_BEEP_DELAY;
BOOL pauseService=FALSE;
BOOL runningService=FALSE;
HANDLE threadHandle=0;

void SendStatusToSCM(DWORD dwCurrentState,DWORD dwWin32ExitCode,DWORD dwServiceSpecificExitCode,DWORD dwCheckPoint,DWORD dwWaitHint)
{
SERVICE_STATUS servicestatus;
servicestatus.dwServiceType=SERVICE_WIN32_OWN_PROCESS;
servicestatus.dwCurrentState=dwCurrentState;
if(dwCurrentState==SERVICE_START_PENDING)
{
servicestatus.dwControlsAccepted=0;
}
else
{
servicestatus.dwControlsAccepted=SERVICE_ACCEPT_STOP|SERVICE_ACCEPT_PAUSE_CONTINUE|SERVICE_ACCEPT_SHUTDOWN;
}