[R] Redrawing !

Yves Gauvreau cyg at sympatico.ca
Sun Jan 14 21:03:43 CET 2001

Thanks you all for the tip. Until I get myself a new card this will do just


Yves Gauvreau
B.E.F.P. Universite du Quebec a Montreal
cyg at sympatico.ca

> -----Message d'origine-----
> De : Marc R. Feldesman [mailto:feldesmanm at pdx.edu]
> Envoye : Sunday, January 14, 2001 2:58 PM
> A : Duncan Murdoch; Yves Gauvreau
> Cc : R-help at lists. R-project. org
> Objet : Re: [R] Redrawing !
> It's there on Windows NT as well:
> Control Panel|Display|Plus
> "show window contents while dragging"  (checkbox if you want this to be
> True; uncheck if you don't want the behavior).
> At 06:43 PM 1/14/01 +0000, Duncan Murdoch wrote:
>  >On Sun, 14 Jan 2001 10:12:33 -0500, you wrote:
>  >> With most Windows
>  >>applications I use I observe that resizing a window (in
> Windoze parlance)
>  >>with the mouse kind of blanks the interior of window until
> we're finish and
>  >>then it is redrawn. With R's default device it is as if every
>  >>event trigger's a complete redraw of the window which make the
> feeling quite
>  >>different. If changing this behavior in future release is to
> complicated
>  >>then lets just forget it as I and most certainly any other
> Windows user can
>  >>live with that even more so if using a more recent graphic
> card make the
>  >>behavior disappear.
>  >
>  >One of the configuration options in Windows is whether or not to
>  >attempt to redraw the complete window during move & resize operations.
>  >I'm not sure how to set that in NT; in Win 9x/ME, it's in the Control
>  >Panel under Display|Effects, "show window's contents while dragging".
>  >I would guess that you have that option enabled, and that other
>  >applications abort the redraw when they receive another message about
>  >a move. (I'm guessing that because when I have the option enabled I
>  >see what you're describing; I normally operate with it disabled, so I
>  >only see the frame moving when I move or resize the window.)
>  >
>  >A future multi-threaded version of R could probably act like other
>  >applications, but it would mean low-level changes in the current
>  >version.  An easier workaround is just to disable that option in
>  >Windows.
>  >
>  >Duncan Murdoch
> >-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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Dr. Marc R. Feldesman
email:  feldesmanm at pdx.edu
email:  feldesman at attglobal.net
fax:    503-725-3905

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