From: "Phil Krylov" phil@newstar.rinet.ru
OK, should we then make a patch which adds an IsWindow() check after every notification in every control? This one fixes a really annoying bug, while the other places are not proved to crash.
Well, if it's a entire class of bugs, we should fix them all. I guess we need a bit of experimentation on windows to see if we need to protect all notifications or only a few ones.
I guess we can protect all of them, in which case we have to look to see how we can do it centrally, in the notification function itself.