[Bug 14547] Problem with loading of windows from Java applications

wine-bugs at winehq.org wine-bugs at winehq.org
Fri Jul 18 18:14:31 CDT 2008


Vincent Povirk <madewokherd at gmail.com> changed:

           What    |Removed                     |Added
                 CC|                            |madewokherd at gmail.com

--- Comment #4 from Vincent Povirk <madewokherd at gmail.com>  2008-07-18 18:14:31 ---
This is probably a known problem with our ddraw implementation. Some programs
(including, I believe, the java swing toolkit) like to lock the entire screen
so that they have a block of memory that they can read and write to do drawing.
In Wine, we would theoretically have to grab the screen, wait for the program
to do drawing, and then write the entire screen back. Instead, we give it a
black screen and write the information back to only the application's window
(but swing gives us a NULL window so we have to write back to the entire

Windows Vista with compositing enabled doesn't support this kind of behavior
either. It would be nice to see a result from the test on real Windows Vista
with compositing and Wine with winver set to Vista (but this wouldn't tell us
anything about Wine or get us closer to fixing this bug.. I'm just curious
about the result).

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