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SCOUG-HELP Mailing List Archives

Return to [ 02 | November | 2003 ]

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Date: Sun, 2 Nov 2003 11:46:27 PDT7
From: Peter Skye <pskye@peterskye.com >
Reply-To: scoug-help@scoug.com
To: scoug-help@scoug.com
Subject: SCOUG-Help: background/foreground/focus terminology ?

Content Type: text/plain

=====================================================
If you are responding to someone asking for help who
may not be a member of this list, be sure to use the
REPLY TO ALL feature of your email program.
=====================================================

I need some quick terminology help.

Steven alerted me a week ago that I was using "foreground" incorrectly
and what I meant was "focus". Part of my confusion is that I've only
done GUI programming using the DESQview object interface which uses
these terms differently from Presentation Manager.

Q1: I don't understand the difference between "background" and
"foreground". Is background a process that does not use the screen,
keyboard or mouse and which doesn't show up on the Workplace Shell
Switch List or the Ctrl-Esc Window List?

---- The Relish NOWKEEP.EXE and NOWSERVE.EXE programs, which are run
from STARTUP.CMD, do not show up on either list but do appear when you
run PSTAT /C.

---- ARTCHRON also shows up only with PSTAT /C but as I recall it uses
the screen/keyboard/mouse when it does pop up (artchron is running here
but I haven't seen the elephant pop up in years).

Q2: Is "focus" the term for the window whose titlebar is blue (rather
than gray) and which is receiving the keyboard and mouse activity?

Q3: Can a window pop itself to the top of the display? Can a process
pop a _different_ processes' window to the top of the display?

Q4: Can a window be popped to the top of the display (so you can see
it, i.e. "always on top") but _not_ receive "focus"?

(Steven: I've done some very limited testing with udesktop, thanks for
the heads up. From my testing it appears to be limited to the first 19
windows but I have a lot more testing to do.)

- Peter

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The Southern California OS/2 User Group
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Copyright 2001 the Southern California OS/2 User Group. ALL RIGHTS RESERVED.

SCOUG, Warp Expo West, and Warpfest are trademarks of the Southern California OS/2 User Group. OS/2, Workplace Shell, and IBM are registered trademarks of International Business Machines Corporation. All other trademarks remain the property of their respective owners.