HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services

　　我就是选择这里来存储我的服务配置信息。我创建了一个 Parameters 键，并在此存储我要保存的值。所以当服务启动时，OnInit 函数被调用；这个函数从注册表中读取初始设置。

BOOL CMyService::OnInit()

{

  // Read the registry parameters.

  // Try opening the registry key:

  // HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\\Parameters

  HKEY hkey;

  char szKey[1024];

  strcpy(szKey, "SYSTEM\\CurrentControlSet\\Services\\");

  strcat(szKey, m_szServiceName);

  strcat(szKey, "\\Parameters");

    if (RegOpenKeyEx(HKEY_LOCAL_MACHINE,

                     szKey,

                     0,

                     KEY_QUERY_VALUE,

                     &hkey) == ERROR_SUCCESS) {

        // Yes we are installed.

        DWORD dwType = 0;

        DWORD dwSize = sizeof(m_iStartParam);

        RegQueryValueEx(hkey,

                        "Start",

                        NULL,

                        &dwType,

                        (BYTE*)&m_iStartParam,

                        &dwSize);

        dwSize = sizeof(m_iIncParam);

        RegQueryValueEx(hkey,

                        "Inc",

                        NULL,

                        &dwType,

                        (BYTE*)&m_iIncParam,

                        &dwSize);

        RegCloseKey(hkey);

    }



  // Set the initial state.

  m_iState = m_iStartParam;



  return TRUE;

}		

void CMyService::Run()

{

    while (m_bIsRunning) {



    // Sleep for a while.

        DebugMsg("My service is sleeping (%lu)...", m_iState);

        Sleep(1000);



    // Update the current state.

    m_iState  = m_iIncParam;

    }

}