Re: [PATCH 0/1] MR6617: comctl32: Use correct clipping region when handling themed WM_NCPAINT in listview.

[Zhiyi Zhang (＠zhiyi)]

> Are you suggesting checking all the pixels or just some?

One pixel is probably enough. test_themed_background() is such an example of a visual test.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/6617#note_84326