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X Aqua double buffering (Real Studio network user group Mailinglist archive)

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Is there are a IRDA Library available for RB 3.5 ?   -   Frederic SAVOIR
  X Aqua double buffering   -   Nikki
    Re: X Aqua double buffering   -   Doug Holton
     Re: X Aqua double buffering   -   Nikki

X Aqua double buffering
Date: 29.08.01 22:48 (Wed, 29 Aug 2001 23:48:14 +0200)
From: Nikki
hi!

Hmm..i don't have X,so I can't check it on my own. How does
X's auto double buffering works width rb apps ? I mean, can I (under X)
simply draw directly into eg. canvas' graphics and no flicker occurs ?

Cheers
Nikki


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Re: X Aqua double buffering
Date: 30.08.01 04:32 (Wed, 29 Aug 2001 22:32:24 -0500)
From: Doug Holton
> Hmm..i don't have X,so I can't check it on my own. How does
> X's auto double buffering works width rb apps ? I mean, can I (under X)
> simply draw directly into eg. canvas' graphics and no flicker occurs ?

Apparently,
but you still might want to consider double-buffering yourself. Maybe in
the future (or present) there might be a way to turn off OS X double
buffering by default and people might do that to speed up system
performance, but then your app would flicker.
Or better yet put all your draw code in a method that passes
"g as graphics" as a parameter. Then you can have a preference which
determines if canvas1.graphics or offscreenpict.graphics is passed to
the method.

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Re: X Aqua double buffering
Date: 30.08.01 12:22 (Thu, 30 Aug 2001 13:22:53 +0200)
From: Nikki
on 8/30/01 5:32 AM, Doug Holton at <email address removed> wrote:

>> Hmm..i don't have X,so I can't check it on my own. How does
>> X's auto double buffering works width rb apps ? I mean, can I (under X)
>> simply draw directly into eg. canvas' graphics and no flicker occurs ?
>
> Apparently,
> but you still might want to consider double-buffering yourself. Maybe in
> the future (or present) there might be a way to turn off OS X double
> buffering by default and people might do that to speed up system
> performance, but then your app would flicker.

i don't think they will make it optional - it would make no sense :)))

Cheers
NIkki


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