[Bug 1990] New: modifier keys not released when switching desktop

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=1990

           Summary: modifier keys not released when switching desktop
           Product: Wine
           Version: 20040121
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-x11driver
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: raspl at gmx.de


Note: This bug requires a desktop with mutiple virtual ones. In this example, I
use KDE with 2 desktops. To switch between desktops on KDE, use <CRTL> + <FX>
with X being 1 or 2.
Use a 'managed' window for the app. The application might be any kind of text
editor or whatever.
The basic problem is: When you press a modifier key in the application, and do
something which makes you leave that desktop, the wine app does catch the
<CTRL>-is-pressed event, but does _not_ catch the <CTRL>-is-released event.

For instance, go into a wine app running on desktop 1, and press <CTRL> + <F2>.
By that you have switched the desktop to desktop 2. But the wine app did not
realize that <CTRL> was released. Depending upon how you return to the app, you
will either have <CTRL> locked or not: When returning to desktop 1 by clicking
on the respective desktop overview icon, the wine app still does not realize
that <CTRL> was released and think that <CTRL> is still being pressed. For
instance, if you hit 's' in the app, not an 's' is executed but <CTRL> + s
(which in most apps saves the current document).
But if you return to that desktop using <CTRL> + <F2> (and if the wine app is
still the active app on that desktop!), then the wine app catches the
<CTRL>-button-released event and wine will not think that <CTRL> is pressed
anymore: Hitting 's' will execute 's' and not <CTRL> + s
A solution would be to reset all modifier keys when the managed window of the
wine app is activated again.

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