Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!computer-science.birmingham.ac.UK!RiddCJ
From: RiddCJ@computer-science.birmingham.ac.UK (Chris Ridd)
Newsgroups: comp.sys.atari.st
Subject: Re: How do I add a window to a form?
Message-ID: <9001101011.aa01318@benjamin.Cs.Bham.AC.UK>
Date: 10 Jan 90 10:11:23 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 39


Paul Close asked (paraphrased):
1) how do I put a scrollbar in a form (dialog) like the file selector?
2) how do I write inside a window?

1) Well, you CAN'T put a window inside a dialog box.  What you can do though,
is simulate a window's scrollbars and features by drawing little buttons (hint
- use G_BOXCHARs for the scroll arrows) and boxes (the scrollbar background
should be a G_BOX with a fill pattern, the little moveable box (thumb) should
be a child of this object, and should also be a G_BOX, filled in white).  Play
around with a good resource editor (K-Resource or WERCS spring to mind).

All the objects should have the TOUCHEXIT flag turned on, so that a mouse click
will 'repeat'.  You'll need a little bit of code to handle all the different
click positions - on the thumb (drag the box), on the background (page the
thumb up or down), or just scrolling line by line up or down.  You don't
need to use G_PROGDEF types.

2) You can write inside a window just by writing on the screen at the proper
coordinates.  To ensure that you don't destroy the screen outside the window,
clip the VDI output to inside the window's work area.  There is no other way.
There are alas, no extra window functions inside the AES that will help you
do clever things.  You need to work hard!  After a bit, you get to admire the
work that's gone into packages like NeoDesk (custom windows) et al.

>Paul Close	paul@cacilj.CTS.COM 	...!{uunet, ucsd, crash}!cacilj!paul
>
>    The Obi-wan Kenobi method:  "Use the Source, Luke"	-Jim Fulton

   Chris

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