Re: [PATCH v2 0/2] MR7938: Draft: winemac: Use IOSurface to update native window layers instead of CGImage.

[Brendan Shanks (＠bshanks)]

Brendan Shanks (@bshanks) commented about dlls/winemac.drv/surface.c:
> bitmap = desc.hBitmap;
>          NtGdiDeleteObjectApp(desc.hDc);
>      }
>      if (desc.hDeviceDc) NtUserReleaseDC(hwnd, desc.hDeviceDc);

It's not really hurting anything, but since we're not creating a CGImage I don't think there's a need for this code and the CGDataProvider stuff any more. Without it, I'm not sure how we would set the `window_background` though.

Maybe we just create the DIB like `window_surface_create()` would (`NtGdiCreateDIBSection( 0, NULL, 0, info, DIB_RGB_COLORS, 0, 0, 0, NULL )`), and then set the window_background there?

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https://gitlab.winehq.org/wine/wine/-/merge_requests/7938#note_122161