RE: On a side note - display resolution changes now handled

["Harold Hunt" <huntharo at msu dot edu>]

Jehan,

> -----Original Message-----
> From: cygwin-xfree-owner@cygwin.com
> [mailto:cygwin-xfree-owner@cygwin.com]On Behalf Of Jehan
> Sent: Sunday, July 21, 2002 6:43 PM
> To: cygwin-xfree@cygwin.com
> Subject: Re: On a side note - display resolution changes now handled
>
>
> Harold Hunt wrote:
> > On the other hand, display depth changes are much more
> disruptive, I think.
> > I don't think that DirectDraw can handle transfering bits from
> an offscreen
> > surface of different format than the primary surface; doing so
> would seem to
> > defeat the whole purpose of DirectDraw.  My current thinking is
> that we will
> > simply display a popup message indicating that Cygwin/XFree86 will be
> > unavailable until the display depth is returned to the original depth.
>
> Isn't it possible to just froget about the previous offscreen buffer and
> ask all X windows to redraw themselves into the newly created surface?
>
> 	Jehan

You must be tired.  If we create a new offscreen surface (which I was not
talking about doing, I only said we have to recreate the primary (onscreen)
surface) with a different depth/format/etc than the original offscreen
surface, then we have effectively changed the X graphics mode and we would
need to use some sort of X extension to notify clients that all pixmaps and
visuals have been reset.  If there is such an extension, I am not aware of
it.

Harold