nanogui: Twice refresh, why?
Subject:
Re: Twice refresh, why?
From:
Jordan Crouse ####@####.####
Date:
2 Apr 2001 13:56:49 -0000
Message-Id: <3AC88589.457DF921@censoft.com>
Not so much a bug, really.... more of a limitation in the way FLNX is
constructed. As all of the individual widgets are drawing themselves,
occasionally the main window will also refresh (say for example when a
widget calls redraw() on it's parent). All I can say is that the
refresh is much better than it used to be. Fortunately, the FLTK/FLNX
folks have provided us with a solution: Fl_Double_Window. Use a
Fl_Double_Window everwhere you would use a single Fl_Window, and you
will get much better performance with less refreshes. The
Fl_Double_Window draws the entire window to a offscreen buffer, and then
transfers the whole thing in one redraw. You will be surprised at how
good the difference is.
Jordan
chang_j wrote:
>
> Hi, all
>
> Fl_window will refresh twice when switch a couple of windows. That is
> to say, window will refresh after it have been shown on screen.
>
> Is there have a bug in flnx?
>
> Best regard.
>
> linuxhh
> ####@####.####
>
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