Re: [Freeglut-developer] Another (old) feature suggestion.

[Richard R. <sf...@ol...>]

On Wed, Feb 18, 2004 at 12:52:32AM -0600, Richard Rauch wrote:
 [...]
> So, GLUT_UNMANAGED is my nomination as a mode flag.  Presently intended
> to go in as a new display mode.

I've held off committing this since the offscreen rendering change
is being properly discussed now.  However, this change is less
controversial (I think) and I am able to implement and test on both
UNIX_X11 and WIN32.  I have at least lightly done so.


General notes:

On UNIX_X11, the features that distinguish a menu from a
regular window are a package deal.  You get them by requesting
that the window not be subjected to a window manager.  Because
there is no standard window manager that everyone uses, there
is no way to re-supply part of the missing details, so they have
to be all-or-nothing.

freeglut will still have to do some magic behind the scenes for
its own menus.  This is because the pop-down strategy that is chosen
interferes with the mouse input stream for all freeglut windows
when a freeglut menu is active.  So, internally, some code that
used to depend upon {IsMenu} still does so; other code uses
{IsUnmanaged} in place of {IsMenu}.  {IsMenu} implies {IsUnmanaged};
since {IsMenu} is strictly for internal use, and freeglut menus
are defined as unmanaged windows, this makes sense to me.

Subwindows (and whatever we use for offscreen rendering)
could be rationally marked as "unmanaged".  A glutGet() could
be defined to find out if something is unmanaged.  It seems
that implementing these now is not of obvious need, and failing
to implement them now does not in any way hinder us from doing
so later, so I refrained from doing these things.  I'm happy
to add one or both, if desired.

I am neutral on whether overloading GLUT display mode
flags for this is desirable.  It makes about as much sense
as using those flags for double-buffering, I think.

That's what I have in my personal copy.

--=20
  "I probably don't know what I'm talking about."  http://www.olib.org/~rkr/