Question

我已经用VC ++编写了Windows Service来在系统重启时挂载驱动器。现在，当我重新启动系统时，在系统关闭时，我想触发我的服务停止事件，该事件未被触发。

我已将Windows服务属性设置为自动，但不起作用。当我手动点击停止按钮时，停止事件被触发。

任何帮助都是适用的。我的代码如下：

void WINAPI ServiceCtrlHandler(DWORD Opcode)
{
  switch(Opcode)
  {
    case SERVICE_CONTROL_PAUSE: 
      m_ServiceStatus.dwCurrentState = SERVICE_PAUSED;
      break;
    case SERVICE_CONTROL_CONTINUE:
      m_ServiceStatus.dwCurrentState = SERVICE_RUNNING;
      break;
    case SERVICE_CONTROL_STOP:
      m_ServiceStatus.dwWin32ExitCode = 0;
      m_ServiceStatus.dwCurrentState = SERVICE_STOPPED;
      m_ServiceStatus.dwCheckPoint = 0;
      m_ServiceStatus.dwWaitHint = 0;

     Disconnect() ;// This method i want to get called on system shot down automatically.

      SetServiceStatus (m_ServiceStatusHandle,&m_ServiceStatus);
      bRunning=false;
      break;
    case SERVICE_CONTROL_INTERROGATE:
      break; 
  }
  return;
}

Answer 1

这是相对简单的。通过向switch语句添加另一个case来处理当前回调处理函数中的SERVICE_CONTROL_SHUTDOWN。可能类似于：

void WINAPI ServiceCtrlHandler(DWORD Opcode)
{
  switch(Opcode)
  {
    case SERVICE_CONTROL_PAUSE: 
      m_ServiceStatus.dwCurrentState = SERVICE_PAUSED;
      break;
    case SERVICE_CONTROL_CONTINUE:
      m_ServiceStatus.dwCurrentState = SERVICE_RUNNING;
      break;
    case SERVICE_CONTROL_STOP:
      m_ServiceStatus.dwWin32ExitCode = 0;
      m_ServiceStatus.dwCurrentState = SERVICE_STOPPED;
      m_ServiceStatus.dwCheckPoint = 0;
      m_ServiceStatus.dwWaitHint = 0;

     Disconnect() ;// This method i want to get called on system shot down automatically.

      SetServiceStatus (m_ServiceStatusHandle,&m_ServiceStatus);
      bRunning=false;
      break;
    case SERVICE_CONTROL_INTERROGATE:
      break; 

    case SERVICE_CONTROL_SHUTDOWN:
        Disconnect();
        break;
  }
  return;
}

OR：

使用RegisterServiceCtrlHandlerEx而不是使用RegisterServiceCtrlHandler注册回调函数。这种新的回调方法是首选。您的回调函数的签名需要与HandlerEx, see MSDN for more info匹配。

DWORD WINAPI HandlerEx(
  __in  DWORD dwControl,
  __in  DWORD dwEventType,
  __in  LPVOID lpEventData,
  __in  LPVOID lpContext
);

在switch语句中添加另一个案例，即SERVICE_CONTROL_PRESHUTDOWN（在XP / Server 2003上不可用）或SERVICE_CONTROL_SHUTDOWN，在上面引用的HandlerEx文档中阅读有关处理这些通知的警告。

如何在系统重启时触发Windows服务停止事件？

1 个答案: