From: Stephen Leake <stephen_leake@stephe-leake.org>
Subject: Re: Need info about Ada tasks
Date: Fri, 26 Sep 2008 06:21:54 -0400
Date: 2008-09-26T06:21:54-04:00 [thread overview]
Message-ID: <umyhv1a2l.fsf@stephe-leake.org> (raw)
In-Reply-To: 1r3nd4190fqnicb4tdebo1ctt70cjetnhi@4ax.com
Fionn Mac Cumhaill <invisible@hiding.from.spam> writes:
> I am using the MingW Ada compiler and the GWindows packages on Windows
> XP.
>
> I am writing a simple program which observes a table in SQL Server
> 2000 and lists its rows to a visible screen display. I need a simple
> task structure that can update the display periodically, with a
> specified wait time between updates. I need to be able to abort the
> display task at any time when the display is not being updated.
Mixing tasking and GUI events can be problematic; only one thread
can call GUI functions.
The canonical solution to your problem is to use a Win32 timer, and
update the display in the timer event handler function.
Then "abort the display task" becomes "disable the timer".
Although Dmitry solved your immediate problem, it might be better to
use a different example problem to study tasking.
--
-- Stephe
next prev parent reply other threads:[~2008-09-26 10:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-25 13:31 Need info about Ada tasks Fionn Mac Cumhaill
2008-09-25 13:49 ` Dmitry A. Kazakov
2008-09-26 5:06 ` Fionn Mac Cumhaill
2008-09-26 10:21 ` Stephen Leake [this message]
2008-09-26 12:46 ` Fionn Mac Cumhaill
2008-09-27 5:56 ` Randy Brukardt
2008-09-27 7:48 ` Dmitry A. Kazakov
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