[Bug 48732] How to Survive crashes on start (fullscreen mode)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48732

--- Comment #11 from Gabriel Ivăncescu <gabrielopcode at gmail.com> ---
Created attachment 66642
  --> https://bugs.winehq.org/attachment.cgi?id=66642
Don't unparent the window, but clear the child style.

Can you please test this patch and tell me if it also solves the crash?

I've done more tests how Windows operates here. It does not actually unparent
the window, but only clear the child style, regardless of whether it had a
parent before or not.

SetParent does actually send some messages: WM_WINDOWPOSCHANGING and
WM_WINDOWPOSCHANGED, since it hides then shows the window. I don't know if
those are the cause of this, or others. There's a lot of messages sent on Wine
that aren't on Windows, because of it:

WM_WINDOWPOSCHANGING
WM_WINDOWPOSCHANGED
WM_ACTIVATEAPP
WM_NCACTIVATE
WM_ACTIVATE
WM_SETFOCUS
WM_KILLFOCUS

On Windows 7, when releasing, it's only a custom message and the
WM_STYLECHANGING/WM_STYLECHANGED that are sent, along the destroy messages of
course.

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