Path: utzoo!mnetor!uunet!nuchat!sugar!peter
From: peter@sugar.UUCP (Peter da Silva)
Newsgroups: comp.sys.amiga
Subject: Re: Scroll Bars in SuperBitMaps
Message-ID: <1425@sugar.UUCP>
Date: 29 Jan 88 07:40:38 GMT
References: <616@wolf.UUCP>
Organization: Sugar Land UNIX - Houston, TX
Lines: 20
Keywords: Scroll Proportional Gadgets SPAM Super Bitmap Duper PitTrap

In article <616@wolf.UUCP>, uzun@wolf.UUCP (Roger Uzun) writes:
> I am trying to add scroll bars to a SuperBitmap Window that opens up
> fine otherwise.  All I get are Gurus when I add the ptr to the linked
> list of Gadgets with my 2 Proportional Gadgets (scrollbars) in it.

> struct PropInfo HScrollBar = {
>  FREEHORIZ | AUOTKNOB,
>  0,0,
>  0XFFFF,0XFFFF,
>  0,0,0,0,0,0};

You need to provide an uninitialised Image structure for the scrollbar.
Why, I don't know. It seems it should be able to say "ah, it's null,
so I'll allocate the Image structure along with the bitmap". One of the
great mysteries of the modern world, I guess... but there it is.

Perhaps 1.4 can be a bit smarter in that area.
-- 
-- Peter da Silva  `-_-'  ...!hoptoad!academ!uhnix1!sugar!peter
-- Disclaimer: These U aren't mere opinions... these are *values*.