Couple of things. Responding to expose/redraw event is
a way of life under any kind of windowing systems.
That said, xforms tries to reduce the occurance of
redraws by using BackingStore and SaveUnder for popup
and transient dialogs, unfortunately it's being my experience
that in general these attempts have no effect on OpenGL windows.
This means unless you do all the GUI stuff using overlay,
it's probably difficult to avoid these redraws. One thing
you may want to try is to implement backing store yourself
by drawing stuff into a pixmap/glpixmap, and respond to
redraws by copying the pixmap to window. This would be
effective if drawing is complex.
---Federico buldin <fjbuldin@hotmail.com> wrote:
>
> # To subscribers of the xforms list from "Federico buldin"
<fjbuldin@hotmail.com> :
>
> Hi there
> I still beginner with this stuff and I am working with XForms &
OpenGL.
> I have problems with pop-menus and dialogs, they damage my canvas
> windows and I have to redraw all the time. I am working with 3D
images,
> maybe it give you an idea of my PROBLEM. Somebody knows a way to
> manipulate overlays in canvas Windows?? I will really apreciate any
> help.
>
> Federico
>
> ______________________________________________________
> Get Your Private, Free Email at /cgi-bin/exit-to?http://www.hotmail.com
> _________________________________________________
> To unsubscribe, send the message "unsubscribe" to
> xforms-request@bob.usuf2.usuhs.mil or see
> http://bob.usuf2.usuhs.mil/mailserv/xforms.html
> XForms Home Page: http://bragg.phys.uwm.edu/xforms
> List Archive: http://bob.usuf2.usuhs.mil/mailserv/list-archives/
>
>
_________________________________________________________
DO YOU YAHOO!?
Get your free @yahoo.com address at /cgi-bin/exit-to?http://mail.yahoo.com
_________________________________________________
To unsubscribe, send the message "unsubscribe" to
xforms-request@bob.usuf2.usuhs.mil or see
http://bob.usuf2.usuhs.mil/mailserv/xforms.html
XForms Home Page: http://bragg.phys.uwm.edu/xforms
List Archive: http://bob.usuf2.usuhs.mil/mailserv/list-archives/