Path: utzoo!attcan!uunet!mcsun!hp4nl!gouldnl!colin@gouldnl.encore.nl
From: colin@gouldnl.encore.nl (Colin Smale)
Newsgroups: comp.sys.acorn
Subject: Re: Changing window titles
Keywords: windows riscos arc title bar
Message-ID: <12899@gouldnl.encore.nl>
Date: 31 Jan 91 11:53:44 GMT
References: <6482@ecs.soton.ac.uk>
Sender: Colin Smale <colin@encore.nl>
Organization: Encore Computer BV, Maarssenbroek, Holland
Lines: 21

In <6482@ecs.soton.ac.uk> rhh88@ecs.soton.ac.uk (Heywood RH) writes:
>I have a problem. I need to change the title of a window at quite
>regular periods but whatever I seem to do the title remains unchanged.
>I have tried changing the indirected pointer to the title to a new
>message and then reopening the window but it does not seem to work.
> I have do a tempary bodge job of the problem so I can get the rest of
>the program done that involves creating a new window with the correct
>title, opening that and deleteing the old window (YUUUKKKKKKKK!!!!!)

The neatest way of doing it is to force a redraw of the title bar.
This can be accomplished by using Wimp_GetWindowOutline (???) to get the
overall outline of the window (including title bar etc), Wimp_GetWindowState
to get the visible work area coordinates and calling Wimp_ForceRedraw
with physical screen coordinates (window handle=-1) using the x-coordinates
from either call above, ymin=top of visible work area and ymax=top of
window outline.  Alternatively you can cheat a bit by knowing that the title
bar is always a constant height (64?).

This works at least for the case of changing the CONTENTS of the window
title buffer; you are actually changing the buffer address itself.  Try
allocating a static buffer for the title and copying into it.