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Which account does the service log on with ?

How do you know when to write to the clipboard ?

-- 
Malcolm Smith
MJ Freelancing
http://www.mjfreelancing.com
Borland Technology Partner

Contributing Editor
C++Builder Developers Journal
http://bcbjournal.org


"nicolasr" <nicolasrNOSPAMATSIGNgmx.net> wrote in message
news:4179a85e$1@newsgroups.borland.com...
> Hi,
>
> I want to write to the Clipboard of the currently
> logged on user from within a Windows service.
>
> I've created the service with BCBs TService class.
> To write to the clipboard I first tried the global
> TClipboard instance. Since this didn't work I tried
> to use the APIs directly, as described in the MSDN help.
>
> Like this:
>
>       if(FALSE == OpenClipboard(NULL))
>       {
>          Log("OpenClipboard failed");
>          return;
>       }
>
>       HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE, dataSize+1);
>
>       void* ptr = GlobalLock(hGlobal);
>       CopyMemory(ptr, buffer, dataSize+1);
>
>       if(FALSE == SetClipboardData(CF_TEXT, hGlobal))
>          Log(GetLastErrorString());
>
>       GlobalUnlock(hGlobal);
>       GlobalFree(hGlobal);
>
>       CloseClipboard();
>
> However, the text never arrives in the clipboard. The problem
> is that I don't get any error log so I don't know what went wrong.
> I'm not very familiar with security issues so I don't know whether
> the service can write to the clipboard at all.
>
> By the way, I switched the services Interactive property to 'true'
> but that didn't help.
>
> Any ideas welcome!
> Nick
>
>