🚀 go-pugleaf

"Bogdan" <boprea@xnet.ro> wrote in message
news:43ea6f46@newsgroups.borland.com...

> I need to monitor the job queue of a specified printer

Under NT-based systems, you can use FindFirstPrinterChangeNotification(),
FindNextPrinterChangeNotification(), and
FindClosePrinterChangeNotification().

> I can enumerate current jobs, but I think using a timer or a thread
> to periodically check the job queue is not very efficient, because
> most of the time the queue will be empty.

By using a thread, you can call FindFirstPrinterChangeNotification() and
then call WaitForSingleObject() in a loop.  Each time WaitForSingleObject()
indicates that a change has occured, use FindNextPrinterChangeNotification()
to find out you why the change occured.  You can even get printing status.

Refer to MSDN for more details:

    FindFirstPrinterChangeNotification
    http://msdn.microsoft.com/library/en-us/gdi/prntspol_9sxa.asp

    FindNextPrinterChangeNotification
    http://msdn.microsoft.com/library/en-us/gdi/prntspol_0tym.asp

    FindClosePrinterChangeNotification
    http://msdn.microsoft.com/library/en-us/gdi/prntspol_1c1a.asp


Gambit