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From: higgin@cbmvax.cbm.UUCP (Paul Higginbottom)
Newsgroups: net.micro.amiga,net.micro.atari16
Subject: Re: Problem with proportional gadget
Message-ID: <605@cbmvax.cbmvax.cbm.UUCP>
Date: Sat, 9-Aug-86 23:36:34 EDT
Article-I.D.: cbmvax.605
Posted: Sat Aug  9 23:36:34 1986
Date-Received: Tue, 12-Aug-86 10:06:24 EDT
References: <110@scubed.UUCP>
Reply-To: higgin@cbmvax.UUCP (Paul Higginbottom)
Organization: Commodore Technology, West Chester, PA
Lines: 27
Xref: mnetor net.micro.amiga:4204 net.micro.atari16:1558

In article <110@scubed.UUCP> phil@scubed.UUCP (Phil Cohen) writes:
>My program uses a proportional gadget and I am experiencing some 
>very wierd behaviour.  If one clicks in the body of the gadget, all
>works as advertized, however, if one clicks and drags the knob, all hell
>breaks loose.  The gadget image gets replicated outside of the window
>that it belongs in and the system quickly crashes.  I'm sure it must be
>my fault but am at a total loss to see what is wrong.  Any ideas?
>The gadget is in a subwindow on top of a backdrop window and I am using
>version 1.1.

Proportionals are tricky things to set up right.  I didn't use AUTOKNOB
in one I just did on a window that couldn't be sized - I had a feeling
the AUTOKNOB was for windows that get sized, because it changes in that
case.  Anyway, I didn't use that, but you must have an Image and a PropInfo
structure filled in properly and their respective addresses assigned in the
GadgetRender and SpecialInfo.

Also, if you use the method I suggested above, you'll need GAGDIMAGE set.

I had the exact same symptoms you report (Images being splattered all over
the place for a while before the machine croaks), so don't feel so bad!

Hope this helps a little.

	Paul.

Disclaimer: I do not work for Commodore, and my opinions are my own.