[python-win32] SOLVED: I want to get a message when the screen is locked/unlocked. How?

[Ron Arts]

Tim Roberts schreef:
> Ron Arts wrote:
>> I want to logout the user from a remote session when the desktop is
>> locked, and log her in again when it is unlocked.
>>
>> There seem to be various ways of catching these events:
>>
>> - WTS API
>> - ISensLogon Interface (SENS)
>> - Using Service Control Manager (SCM) Notifications (only for services?)
>> - Winlogon Notification Packages (deprecated and removed from Vista)
>>
>> I currently am trying the following (using WTS API):
>>
>>   if "wxMSW" in wx.PlatformInfo:
>>       import win32ts
>>       win32ts.WTSRegisterSessionNotification(self.GetHandle(),
>> win32ts.NOTIFY_FOR_THIS_SESSION)
>>
>> This does not throw errors at me, but now I am baffled as how I can
>> catch the WTS events.
> 
> Your window will now receive WM_WTSSESSION_CHANGE messages.  There's a
> sample at http://wiki.wxpython.org/MonitoringWindowsUsb that provides a
> wxPython mixin class that allows you to capture arbitrary window
> messages.  When using this, you'd just say:
>         self.addMsgHandler( WM_WTSSESSION_CHANGE, self.onSessionChange )
>         self.hookWndProc()
> 
>     def onSessionChange( self, wParam, lParam ):
>         ...
> 
> WM_WTSSESSION_CHANGE is 0x02b1.
> 
> 
>> Also, is this the appropriate method as the docs state that it
>> requires Windows Terminal
>> Services loaded (which I don't have running).
> 
> Starting with XP, all systems run with Windows Terminal Services
> enabled.  That's how fast user switching is implemented, among other things.
> 


Tim,

that's great, it works like a charm.
Thanks a lot!

Ron

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