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From: nebel@wam.umd.edu (Chris D. Nebel)
Newsgroups: comp.sys.mac.programmer
Subject: Problems using PrGeneral
Message-ID: <1990Dec6.204027.13037@wam.umd.edu>
Date: 6 Dec 90 20:40:27 GMT
Sender: usenet@wam.umd.edu (USENET Posting)
Reply-To: nebel@wam.umd.edu (Chris D. Nebel)
Organization: University of Maryland at College Park
Lines: 20

I'm attempting to write a page setup routine that allows the user to select
any of the resolutions that the current printer claims it can handle, e.g.
300 dpi on a Laserwriter.  Getting the possible resolutions and setting a
new one is no problem; the problem I'm having is in allowing the user to turn
the hi-res stuff off.  Basically, I want the print record to look as if I
never called SetRsl at all.  Now, IM-V claims that calling SetRsl with an
unsupported resolution will set the print record back to the default
resolution, but it seems to do nothing at all!  Say I call SetRsl (150,150).
Checking prInfo.iHRes, I see that it is now 150.  I call SetRsl with (0,0),
it gives me a NoSuchRsl error, but if I look at prInfo.iHRes, it's still 150!
Am I doing something wrong, or is IM just lying?

If the SetRsl (0,0) business just doesn't work, then what's the best tack to
take?  I considered calling SetRsl (72,72), but I've heard that a default print
record is different from one that's been SetRsl'd to 72 dpi.  Is this true?  If
so, how?

Thanks,
Chris Nebel
nebel@wam.umd.edu