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RUN APPLICATION from SCREEN SAVER in Win2K

Posted on 2001-07-12
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Last Modified: 2008-03-10
I need to run an application from screen saver. When screen saver exists I use this code to launch application.

STARTUPINFO si;
PROCESS_INFORMATION ProcessInformation;
si.cb = sizeof(STARTUPINFO);
si.lpReserved = NULL;
si.lpTitle = NULL;
si.lpDesktop = _T("WinSta0\\Default");
si.dwX = si.dwY = si.dwXSize = si.dwYSize = 0L;
si.dwFlags = 0;;
si.wShowWindow = SW_SHOW;
si.lpReserved2 = NULL;
si.cbReserved2 = 0;
if (::CreateProcess(lpApplicationName, lpszCmdLine, NULL, NULL, FALSE,
                   0, NULL, NULL, &si, &ProcessInformation))
{
    ::CloseHandle(ProcessInformation.hProcess);
    ::CloseHandle(ProcessInformation.hThread);
}

But problem is, this code launch application successfully on Win NT, but I can'tsee launched application on desktop of Win 2k. Another important thing is that when I shutdown my Win 2k system then while shuting down I can see that launched application. I don't know on which desktop this Win 2k launch application.

Please help me in his problem, as I m not getting any idea, as the code is working fine on NT, but is creating problem on Win 2k.

Waiting for reply!
Thanx.
0
Comment
Question by:haider
10 Comments
 

Expert Comment

by:tianyu
ID: 6276133
I ran your code with following changes:
if (::CreateProcess(NULL, TEXT("NOTEPAD readme.txt"), NULL, NULL, FALSE,
                  0, NULL, NULL, &si, &ProcessInformation))
Nothing wrong.
2K with service pack 1; VC6.0 with service pack 4; last platform SDK header files and lib.

Did you try it without screen saver?
0
 

Author Comment

by:haider
ID: 6276281
yes, without screen saver it works fine, but problem occured only in case of screen saver.
0
 

Expert Comment

by:tianyu
ID: 6279255
need to check screen saver
0
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Author Comment

by:haider
ID: 6279856
If you need a sample screen saver code then I can send you that.
0
 

Expert Comment

by:tianyu
ID: 6279907
sure. Send it to t_yu72@hotmail.com
One more question: it doesn't work for all screen savers or for this one only?
0
 

Author Comment

by:haider
ID: 6280086
Screen Saver is on its way, please check your mail. Also I have checked this thing with many other sample screen saver codes but it doesn't work for any of them, but it works fine for NT and 9x.
0
 

Expert Comment

by:tianyu
ID: 6288599
error return from createprocess is "access denied" when the screen saver is invoked by 2K or scheduled tasks. while the createprocess is successful when screen saver is invoked by double clicks. Should look into the security settings or something.
0
 

Author Comment

by:haider
ID: 6288739
yeah, looks like to set security settings, but can you help me in doing this, if you can. Also have you tried it on NT or 9x, it will work fine for NT and 9x.
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Expert Comment

by:griessh
ID: 6828182
I think you forgot this question. I will ask Community Support to close it unless you finalize it within 7 days. Unless there is objection or further activity,  I will suggest to refund the points and PAQ at zero points since nobody had a satisfying answer for you.

The link to the Community Support area is: http://www.experts-exchange.com/jsp/qList.jsp?ta=commspt

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
======
Werner
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