AM>   Can I spoil something and call
AM>   unintentionally the screen repaint?
   I'm not familiar with OWL.
   In MFC, however, the Invalidate() command will initiate
   the OnDraw message, and it can use two states, TRUE and
   FALSE, with TRUE being the default. If the condition is
   TRUE, then a total rewrite of the window is performed,
   blanking it first. This is the default for when you move
   or resize your window, naturally, but when you are only
   updating a valid display, you want to use FALSE.
   Perhaps there is something similar in OWL, where it will
   not blank the window before redrawing it.
> ] The Sky is full of Good and Bad that Mortals Never Know.....
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