Process.MainWindowTitle returns empty used in Windows Service (OS=Windows7)

FWIW, I can't see anything in the MSDN documentation about service changes in Vista or Windows 7 which would affect the ability to obtain this information.

Basically, you need the "SeDebugPrivilege" security privilege to read into another process's address space to obtain UI information which should automatically be available under the LocalSystem account. 

According to the documentation for the ServiceBase class, a service you create using .NET runs by default under the System account. So, unless you're using a different account which lacks this privilege under Windows 7, I don't know what the problem can be.

To make absolutely sure, you could try enabling this privilege manually using the code in this link (http://rongchaua.net/blog/c-how-to-enable-sedebugprivilege/) and see whether it's any better. 

Thanks for replies

Vulpes,

'Allow service to interact with desktop' is already checked for both Windows7 as well as Windows XP. Infact same service is tested for both OS. Any other suggestion plz?

Sam Hobbs
I got the title on WindowsXP thats why thought that it should not be a service restriction. I am not sure about this change for Windows 7. Infact my client is migrating to Windows 7 from WinXP. Same functionality was achieved earlier so i must have to achieve the functionity on Windows 7 as well in any case.

a) Can you provide any authentic link which can clearly tell that it is not possible to get title (or UI properties) in service for Windows7?

b) Is there any other solution for this like API or so?

Regards,
Immi

Thanks for reply,

Service has no UI and no main window.

Infact Service is trying to get title of other running processes. These processes have UI and obviously titled main windows. Service get the process ID of these processes successfully. Also service can get the process name .i.e.

lObj_Process = Process.GetProcessById(Pi_ProcessID)
lObj_Process.ProcessName

But

lObj_Process.MainWindowTitle returns empty.

It is obvious that running processes are not child process of service at all.

I am repeating that if same service runs on Windows XP, title is found so it is not a Windows Service restriction in my case.

Hope situation is clear now?

Thanks and Regards
Immi