Details
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Bug
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Resolution: Unresolved
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P2: Important
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None
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6.5.3
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None
Description
This commit reverts the fix to QTBUG-106583
https://github.com/qt/qtbase/commit/bf0f1fa7d1cf0eaad90601bbabb99c660d941cf5
But it didn't revert the changes completely. The change to window class's hbrBackground is not reverted. It's NULL instead of GetSysColorBrush(COLOR_WINDOW) when compared to Qt6.2
https://github.com/qt/qtbase/commit/732d073351752530a7b6bda0bfe6c2ec264f4bd5
hbrBackground is NULL but Qt doesn't handle WM_ERASEBKGND message. The window's extra area is black when resize/maximize.