Re: [PATCH v2 0/1] MR1878: comctl32/listview: Exclude header area in WM_NCPAINT.

[Vladislav Timonin (＠vt)]

Was pointed out that the `DTBG_OMITCONTENT`/`DTBG_OMITBORDER` approach wasn't handling `BT_IMAGEFILE` quite right. So clipping it is.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/1878#note_20098