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From: russotto@eng.umd.edu (Matthew T. Russotto)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Color Quickdraw
Keywords: CobyBits, Palettes
Message-ID: <1990Aug17.142506.8023@eng.umd.edu>
Date: 17 Aug 90 14:25:06 GMT
References: <1755@metasoft.UUCP>
Sender: news@eng.umd.edu (The News System)
Organization: College of Engineering, Maryversity of Uniland, College Park
Lines: 33

In article <1755@metasoft.UUCP> rln@metasoft.UUCP (Roberta Norin) writes:
>I am having two problems using Color QuickDraw and would appreciate any
>advice or insights.
>
>1.  I am converting PICTs to my application's objects: I am using the
>QuickDraw standard procs to do this. For bitmaps, I just want to
>create another picture so I am opening a picture and calling CopyBits
>with the arguments that are passed to StdBits. I copy to the BitMap of
>the current grafport. This works fine for black and white bitmaps but
>I crash with color. Can anyone help. I have seen other references to
>this problem but no solutions. I've tried it with some pretty small
>images and still crash.

Something seems fishy here-- doesn't CopyBits call StdBits, and wouldn't
that make the whole thing circular?
>
>2.  I have a palette of different colors to choose from. Since there
>is only one palette in the application I use the Ghost Window global
>to get it to float.  This has worked fine with a small amount of extra
>code except the palette manager does not change its colors when the
>ColorPicker is called and a palette entry is changed. I suspect it has
>something to do with the fact that it is a ghost window and am
>wondering if this is an impossible combination or if there is some way
>to get this to work. If I change the color entries myself by calling
>PaletteToCTab(), the colors will change but only after calling the
>ColorPicker a second time.

When you change a palette entry, you need to call ActivatePalette on the
window that has that palette assigned.

--
Matthew T. Russotto	russotto@eng.umd.edu	russotto@wam.umd.edu
][, ][+, ///, ///+, //e, //c, IIGS, //c+ --- Any questions?