c++写修改Windows服务类型的代码

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VOID DoSvcStartType()
{
SC_HANDLE schSCManager;
SC_HANDLE schService;

// Get a handle to the SCM database.

schSCManager = OpenSCManager(
  NULL,                    // local computer
  NULL,                    // ServicesActive database
  SC_MANAGER_ALL_ACCESS);  // full access rights

if (NULL == schSCManager)
{
  printf("OpenSCManager failed (%d)/n", GetLastError());
  return;
}

// Get a handle to the service.

schService = OpenService(
  schSCManager,            // SCM database
  szSvcName,               // name of service
  SERVICE_CHANGE_CONFIG);  // need change config access

if (schService == NULL)
{
  printf("OpenService failed (%d)/n", GetLastError());
  CloseServiceHandle(schSCManager);
  return;
}

// Change the service start type.
SC_LOCK sclLock;
sclLock = LockServiceDatabase(schService);


if (! ChangeServiceConfig(
  schService,            // handle of service
  SERVICE_NO_CHANGE,     // service type: no change
  //SERVICE_CHANGE_CONFIG,
  SERVICE_DEMAND_START,  // service start type
  SERVICE_NO_CHANGE,     // error control: no change
  NULL,                  // binary path: no change
  NULL,                  // load order group: no change
  NULL,                  // tag ID: no change
  NULL,                  // dependencies: no change
  NULL,                  // account name: no change
  L"ABC",                  // password: no change
  NULL) )                // display name: no change
{
  //SERVICE_CHANGE_CONFIG
  printf("ChangeServiceConfig failed (%d)/n", GetLastError());
}
else printf("Service enabled successfully./n");

//将启动类型更改为禁用
if (! ChangeServiceConfig(
  schService,            // handle of service
  SERVICE_NO_CHANGE,     // service type: no change
  SERVICE_DISABLED,
  //SERVICE_DEMAND_START, // service start type
  SERVICE_NO_CHANGE,     // error control: no change
  NULL,                  // binary path: no change
  NULL,                  // load order group: no change
  NULL,                  // tag ID: no change
  NULL,                  // dependencies: no change
  NULL,                  // account name: no change
  NULL,                  // password: no change
  NULL) )                // display name: no change
{
  //SERVICE_CHANGE_CONFIG
  printf("2:ChangeServiceConfig failed (%d)/n", GetLastError());
}
else printf("2:Service enabled successfully./n");
UnlockServiceDatabase(sclLock);

CloseServiceHandle(schService);
CloseServiceHandle(schSCManager);
}