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From: Rick on 14 Sep 2005 16:38
Does anyone know how in the hell (do I sound frustrated? or what) how I
can delete the default printer. (programatically)

I want to programatically delete the default printer just as if you
would right click on the default printer ICON in the Printers dialog
box and select the delete option.

I have tried all Win32 W2K API routines which make some sort of sense
to accomplish this; DeletePrinter, DeletePrinterDriverEx, etc. but to
know avail.

There seems to be very little historical clammering on this subject and
not much written on the subject. If anyone can point me to a website,
recommend a book, or directly help, it would greatly be appreciated.
Thanks.

Rick

From: Kellie Fitton on 14 Sep 2005 18:47
Hi,

Try this approach to delete the default printer:

GetDefaultPrinter()
OpenPrinter()
DeletePrinter()

Now, you need to pass the completed PRINTER_DEFAULTS structure with
the DesiredAccess field SET to PRINTER_ACCESS_ADMINISTER.
in other words, you need to be loggedOn as an administrator, to have
the access rights to delete the default printer.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/prntspol_910y.asp

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/prntspol_0hma.asp

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/prntspol_9qnm.asp

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/prntspol_42eq.asp

Hope these information helps,

Kellie.

From: Rick on 14 Sep 2005 20:19
Kellie, Thanks so much for getting back to me. The only thing I was
doing different from your suggestion was NOT calling
GetDefautPrinter() (because I already knew it) so I added the call and
got the same results. It appears the last call to DeletePrinter() fails
with a System Error 5 which is ERROR_ACCESS_DENIED.

I am already logged in as the administrator so I don't understand why I
am being denied access. In any event I will follow up on your idea of
setting the PRINTER_ACCESS_ADMINISTRATOR. I'll check to see what API
calls I need to make.

Any other suggestions or comments you have are welcome. Thanks - Rick



void DeleteNVPrinter(LPTSTR pPrinterName) {
BOOL bRet;
char s[80];
HANDLE hPrinter = NULL;
DWORD dwCount;
char lpPrinterName[50] ;

dwCount = 50;
bRet = GetDefaultPrinter(&lpPrinterName[0], &dwCount);
if (!bRet) {
sprintf(s,"GetDefaultPrinter Operation Failed %08X",
GetLastError() );
logErrorToFile(s);
}

bRet = OpenPrinter(lpPrinterName, &hPrinter, NULL);
if (!bRet) {
sprintf(s,"OpenPrinter Operation Failed %08X",
GetLastError() );
logErrorToFile(s);
}

bRet = DeletePrinter( hPrinter );
// Returns system error 5;
ERROR_ACCESS_DENIED
if (!bRet) {
sprintf(s,"DeletePrinter Operation Failed %08X",
GetLastError() );
logErrorToFile(s);
}
}

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