<AWT Dev> Fwd: Modal dialogs for fullscreen window

Anthony Petrov anthony.petrov at oracle.com
Tue Apr 16 02:26:55 PDT 2013

This issue cannot be fixed for all platforms. E.g. on MS Windows this is 
technically impossible to display a regular top-level window in the 
exclusive full screen mode. I suppose that the same limitation may apply 
to the exclusive full screen mode on other platforms, too. So this just 
can't be fixed.

Please note that you only need the exclusive full screen mode for high 
performance rendering (e.g. for video games), in which case you most 
probably don't want to display any top-level windows anyway since they 
are going to look inconsistent with the rest of your UI. However, in the 
emulated full screen mode the rendering performance may not be as good 
as in the exclusive mode. Thus, depending on your particular needs you 
should choose and use the right full screen mode for your application.

best regards,

On 4/16/2013 13:15, Vladimir Kravets wrote:
> Hi Anthony,
> Thanks a lot for workaround, I will definitely try to use it... But, is 
> this issue will be fixed?
> Thanks,
> Vladimir
> 2013/4/16 Anthony Petrov <anthony.petrov at oracle.com 
> <mailto:anthony.petrov at oracle.com>>
>     Hi Vladimir,
>     A workaround is to not use the exclusive full screen mode, but
>     instead emulate it. Call Window.setAlwaysOnTop(true), and then
>     resize your window to occupy the whole screen area as reported by
>     GraphicsConfiguration. getBounds().
>     --
>     best regards,
>     Anthony
>     On 4/15/2013 20:56, Vladimir Kravets wrote:
>         Hi guys,
>         I'm using in my application fullscreen mode. Since 1.6 java have
>         a lot of issue with it I using X11 native binding for it.
>         Use JNA 3.4. To going to fullscreen I send XSendEvent as
>         You can look at test application on the github:
>         https://github.com/vkravets/ FullScreenTest
>         <https://github.com/vkravets/FullScreenTest>. Main Class: Main
>         or MinTest
>         So about the issue... I have an issue with modal dialogs or
>         windows which I try to show when my main window in fullscreen mode.
>          From 1.7 java is not working as expected. In 1.6 java modal
>         dialogs/windows appeared above fullscreen window as it should
>         be, but in 1.7 and 1.8 all modal dialogs/windows appeared under
>         the fullscreen window.
>         I'm using wm Metacity, the same I have noticed on Gnome Shell...
>         It seems that it's related to all clones of Metacity...
>         I'm try to see how it's perform by defult native frameworks and
>         I tested GTK3 and SWT which is using GTK bindings. And
>         everything is working as expected. SmartGit which written on
>         Java and use SWT don't have such problem. VLC/GTK the same - in
>         fullscreen mode I can call some dialogs which will be appeared
>         above fullscreen window.
>         It's very strange  for me that Java in own documentation have
>         such lines:
>         Quote from GraphicsDevice# setFullScreenWindow:
>         "
>         Windows cannot overlap the full-screen window. All other
>         application windows will always appear beneath the full-screen
>         window in the Z-order.
>         "
>         Since from 1.7 java is using the same message _NET_WM_STATE with
>         _NET_WM_STATE_FULLSCREEN to going to fullscreeb and is not clear
>         why we have such broken behavior with modal dialogs from 1.7
>         java and such lines in the documentation....
>         I'm already posted a defect to Oracle but Ithink it will be
>         marked as duplicate since I found such issue
>         http://bugs.sun.com/ bugdatabase/view_bug.do?bug_ id=7192269
>         <http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7192269>
>         which marked as Not an Issue and for me is not clear why?
>         Could you please suggest workaround? Or please fix this =)
>         Best Regards,
>         Vladimir

More information about the awt-dev mailing list