OpenInputDesktop（）确定安全/登录桌面 [英] OpenInputDesktop() to determine Secure/Login desktop

问题描述

Visual C ++ 2008

Visual C++ 2008

如何确定当前交互式用户是否位于锁定桌面（Windows键L）或关机屏幕（Vista或7）等待程序在注销期间关闭。

How to establish whether or not the currently interactive user is at either the Locked desktop (Windows-Key L) or the Shutdown Screen (Vista or 7) waiting for programs to close during log-out.

HDESK hd = OpenInputDesktop（0，false，READ_CONTROL）;

HDESK hd = OpenInputDesktop(0, false, READ_CONTROL);

这对于默认桌面上的用户应用程序正常工作，但是在锁定或关闭桌面上，由于用户没有权限打开安全桌面对象的权限，因此失败并显示错误代码5。

This works fine for a user app on the Default desktop, but fails with error Code 5 when at the Locked or Shutdown desktops due to, I understand, the user not having permissions to open the secure desktop object.

从在SYSTEM帐户下运行的服务调用此命令将返回错误1（无效的函数）。我认为该服务无论如何都在错误的会话（会话0）中，并且无法确定任何其他会话的交互式桌面。

Calling this from a Service running under the SYSTEM account returns error 1 (invalid function). I believe that the Service is in any case in the wrong session (Session 0) and is unable to determine the interactive desktop for any other session.

我正在运行一个应用程序

I have an app running under the currently interactive user, and also, the system service running, so could do the code from either.

我可能应该尝试枚举所有会话，以及Window站。和台式机？

Should I perhaps attempt to enumerate all of the sessions, Window stations and desktops?

即使我只能在会话0中从SYSTEM服务调用OpenInputDesktop，如何确定当前交互的台式机呢？

Even then how do I determine the currently interactive desktop if I can only make the call to OpenInputDesktop from the SYSTEM service in session 0?

推荐答案

我认为您可以尝试以下方法：

I think you can try these methods:

• 
  从当前正在交互用户中运行的进程中：
  
  使用 WTSRegisterSessionNotification 注册会话更改通知。一旦注册，交互过程将获得登录/注销通知。可在此处找到更多信息：
  
  http://msdn.microsoft.com/zh-cn/library/aa383841.aspx
  
  http：//blogs.msdn。 com / b / oldnewthing / archive / 2006/01/04 / 509194.aspx
  
  
  


• 
  来自服务（在会话0）：
  
  
  
  
  • 使用 GetProcessWindowStation 获取当前站的服务句柄，并将其保存为
  
  
  • 使用 WTSGetActiveConsoleSessionId 获取当前交互式会话的会话ID。
  
  
  • 获取
  
  
  • 与 WTSQuerySessionInformation 和 WTSWinStationName 信息类的当前会话ID对应的工作站名称。
  
  
  • 使用 OpenWindowStation 打开此站。使用 SetProcessWindowStation 将此工作站设置为您的服务进程。
  
  
  • 现在，您可以使用 OpenInputDesktop 检查用户是否已登录。
  
  
  • 通过调用 CloseWindowStation 关闭打开的交互式Window站。通过调用 SetProcessWindowStation 并保存较早的站句柄来重置服务的原始窗口站。
  
  
  
  • From a process running in currently interactive user:
    Use WTSRegisterSessionNotification to register for session change notifications. Once registered, interactive process would get logon/logoff notifications. More info can be found here:
    http://msdn.microsoft.com/en-us/library/aa383841.aspx
    http://blogs.msdn.com/b/oldnewthing/archive/2006/01/04/509194.aspx
    
    
  • From a service (running in session 0):
    
    • Use GetProcessWindowStation to get the current station handle of service, and save it for later use.
    • Use WTSGetActiveConsoleSessionId to get session id of current interactive session.
    • Get station name corresponding to current session id using WTSQuerySessionInformation with WTSWinStationName info class.
    • Open this station using OpenWindowStation. Set this station to your service process using SetProcessWindowStation.
    • Now, you can use OpenInputDesktop to check if user has logged-in or not.
    • Close the opened interactive window station by calling CloseWindowStation. Reset the original window station of service by calling SetProcessWindowStation with station handle saved earlier.

    PS：当前， WinSta0 是Windows中唯一的交互式工作站。因此，您可以跳过 WTSGetActiveConsoleSessionId 和 WTSQuerySessionInformation 调用。

    PS: Currently, "WinSta0" is the only interactive station in Windows. So, you can skip WTSGetActiveConsoleSessionId and WTSQuerySessionInformation calls.

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