On Sun, Sep 22, 2019 at 7:41 PM Fabian Maurer <dark.shadow4@web.de> wrote:

> What should happen if parent/owner does not handle WM_CTLCOLOR* message?

Then it should get passed to DefWindowProc. It's currently handled by
DefWindowProc as well, but with these patches the parent is given a chance to
handle it itself before it's passed to the default handler.

I don't see this happening with your patch.

Regards,
Fabian Maurer