Re: [PATCH 0/1] MR3416: ieframe: Forward WM_PAINT messages to the document host and all its child windows.

[Torge Matthies (＠tmatthies)]

On Wed Jul 26 14:52:43 2023 +0000, Jinoh Kang wrote:
> > Emulate this protection for the trivial case of an
> > InvalidateRect(...); call on the parent window.
> > I believe this trivial case should already be handled by the
> > `WM_CLIPCHILDREN` flag of the iexplore frame window and the shell
> > embedding window.
> > The `WM_CLIPCHILDREN` flag is what caused this problem in the first place. The window having the `WM_CLIPCHILDREN` flag is prevented from drawing over its children, but the parent/ancestor windows of that window are not. However the browser window does not care and is immune to being painted over anyway.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/3416#note_40340