It's a long time since I have played with QuickReports (and I no longer have
it installed) but from memory there is a Destination property on the report
component which says whether it is printing to a printer or a metafile (just
looked it up - constants are qrdMetafile or qrdPrinter). When it is
previewing the Destination = qrdMetafile and if it is going to a printer the
Destination is always qrdPrinter.
Unfortunately it isn't quite that simple - if you call the Prepare method of
the report (which people often do to get a page count etc) then QuickReports
does a temporary build of the report internally to Destination =
qrdMetafile. This could be misleading if you are about to call the Print
method (which will cause QR to run the report again, this time to
qrdPrinter).
Hope that helps
David.
DB Solutions Ltd.
----- Original Message -----
From: "Nello Sestini" <[EMAIL PROTECTED]>
To: "Multiple recipients of list delphi" <[EMAIL PROTECTED]>
Sent: Wednesday, November 29, 2000 12:01 PM
Subject: Re: [DUG]: QR - Is it currently printing?
> > Now I need to know is it possible to do stuff from within
> > a Band but only if the report is being >printed (either
> > directly or from the Preview screen) and not if the report
> > is just being viewed.
>
> > Is this possible? or does QR not know, at the time the band
> > is being processed, whether it is going >to be sent to the printer?
>
>
> For reasons I've never understood, QR regenerates the whole
> report for the printer so I think you actually do have a shot at
> detecting that you are "preparing to print" vs "preparing to
> preview".
>
> I haven't actually played with it - but there is an event
> TQuickRep.QRPrinter.OnGenerateToPrinter
> that fires before the preparation that is destined to go to
> the printer.
>
> Not sure - but a reasonable attack might be to supply
> your own handler in this event to set a flag that your
> band/field events could examine to determine if you're
> destined for the printer.
>
> -ns
>
>
>
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