Hi Doug,
> The change made by Eric in r31206 to call [NSApp deactivate] when a
> WM_ACTIVEAPP message is received reporting that the app lost focus causes
> trouble. I'll describe what I know about the issue.
>
> In our application, if we have two editor windows open (call them A and B)
> and minimize the one that has focus (say, B) then Windows apparently sends
> this message even though the focus switches to window A (within the same
> instance of the app). Window A then becomes the key window, but when we
> restore window B by clicking on its tile in the task bar, it now becomes the
> key window but leaves window A in a broken state such that after clicking in
> window A you can make text selections there, but all keystrokes in window A
> are now sent to window B!! Closing window A and reopening that document is
> the only way to restore it to normal functioning.
>
> I added an NSLog at the point where the new code calls [NSApp deactivate] and
> found that it was called more than 20 times when I minimized a window. A
> comment I read online suggests that WM_ACTIVEAPP is sent for every window in
> the application. Perhaps that includes offscreen windows, because I only had
> 3 or 4 windows open at the time. Since these messages are also being sent on
> minimizing a window even when the app remains the active app it seems like
> this isn't really working the way it should.
>
> On restoring window B, I get the message "Bogus attempt to set key window"
> (from line 3897 of NSApplication.m) so clearly the application's notion of
> the key window is getting confused.
>
> I'd like to request that this change be reverted until a better
> implementation can be found that doesn't have these issues.
Sure, I reverted the change for now.
I'll see if I can work out a proper fix some time soon.
The WM_ACTIVATEAPP documentation says it is sent when focus switches to or from
another application.. but it sounds like minimizing a window causes it to be
sent as well. Perhaps we have to add an extra check that the active window
actually belongs to another application before sending the [NSApplication
deactivate].
> Thanks!
>
> Doug
>
> P. S. Eric -- THANK YOU, THANK YOU, THANK YOU for fixing the problem with
> reverse ordering of windows while in gdb under Windows! Debugging is so much
> more tolerable now!
Glad to hear :-)
--Eric
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