Re: subwindow-less Gtk+ and offscreen windows

["Iain *" <iaingnome gmail com>]

On Mon, Aug 4, 2008 at 11:22 AM, Alexander Larsson <alexl redhat com> wrote:
> On Sat, 2008-08-02 at 21:35 +0200, Alexander Larsson wrote:
>
>> * Some operations require an X window id, for example:
>>    + glXMakeCurrent()
>>       so that you can draw into a window with opengl.
>>       You can still draw to the toplevel window, but you can't
>>       have GdkOffscreenWindow automatically clip the opengl drawing
>>       calls (i think).
>>    + the Xv extension
>>       If you want to show video in a part of your window you need
>>       to use Xv, and you have to give it a subwindow in which to render.
>
> Qt changed over to not use subwindows in 4.4.0 I believe. It would be
> interesting to see how they solved problems like these.

Doesn't give too much away, but
http://labs.trolltech.com/blogs/2007/08/09/qt-invaded-by-aliens-the-end-of-all-flicker
explains it a bit.

iain (in useful mail shocker!)