Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!hplabs!hp-pcd!hpcvlx!bturner
From: bturner@hpcvlx.HP.COM (Bill Turner)
Newsgroups: comp.windows.ms
Subject: Re: Mapping modes
Message-ID: <106580047@hpcvlx.HP.COM>
Date: 26 Jun 89 18:01:26 GMT
References: <3196@watale.waterloo.edu>
Organization: Hewlett-Packard Co., Corvallis, OR, USA
Lines: 11

> Every time you do a GetDC (or BeginPaint) windows provides you with a DEFAULT
> DC.  This is done because there is only a total of 5 DCs for the entire system. 
> (if you do 6 GetDCs without intervening ReleaseDCs your system will appear to 
> hang!) That means that you have to reload a DC EVERY time you get it and that
> includes mapping modes, extents, pens, brushes etc.

Actually, it's worse than that, the system shows no effects.  What happens is
that, after the 5th GetDC, GetDC returns the *SAME* hDC!  It doesn't crash
the system, but behavior is most strange...

--Bill Turner (bturner@hp-pcd.hp.com)