nanogui: updating window
Subject:
RE: [nanogui] updating window
From:
"Robbie" ####@####.####
Date:
8 Mar 2006 22:04:57 +0000
Message-Id: <20060308220456.51B4B7E44A@xprdmxin.myway.com>
GrFill dah!.
Sorry.
> -----Original Message-----
> From: Robbie ####@####.####
> Sent: Wednesday, March 08, 2006 3:05 PM
> To: ####@####.####
> Subject: RE: [nanogui] updating window
> Importance: High
>
>
> If I do that, I'll have to set the background of the pixmap to a specified
> colour. I wasn't aware you can do that. can you?
>
> Thanks.
>
> > -----Original Message-----
> > From: Aaron J. Grier ####@####.####
> > Sent: Wednesday, March 08, 2006 1:05 PM
> > To: ####@####.####
> > Subject: [nanogui] Re: updating window
> >
> > On Wed, Mar 08, 2006 at 10:21:01AM -0500, Robbie wrote:
> > > I don't think this question was asked before but I'm wondering if
> > > there is anyway to update a window without causing a noticable
> > > flicker. Is there? If not, is there a way to update a portion of the
> > > window?
> > >
> > > For instance, if I want to add items to a displayed list, or icons for
> > > that matter, is their a way to update just the portion affected and
> > > not the entire window?
> >
> > double-buffer. create an offscreen pixmap, do all your updates there,
> > and then perform a single blit to the visible window.
> >
> > since you're not performing any erase/redraw operations to the visible
> > screen, the flicker is minimized.
> >
> > --
> > Aaron J. Grier | Frye Electronics, Tigard, OR | ####@####.####
> >
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