1329e6faca
GetWindowPlacement() stores wrong positions in the &WINDOWPLACEMENT
argument's ptMaxPosition member on Windows 10.
(1) Each time a fixed height window is maximized, ptMaxPosition moves
- down by the task bar's height, if the task bar is on top
- right by the task bar's width, if the task bar is on the left
(2) The frame margins' left offset (typically -8) is not respected.
On Windows 10, set ptMaxPosition to {0, 0} adjusted by the frame
margins' left offset.
Fixes: QTBUG-123752
Pick-to: 6.7 6.5 6.2
Change-Id: I8bbd63d93a7648921b703ff6f3e09c4cf2999be2
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
(cherry picked from commit 33874a9424cd03c21ca9986a39c383b3689f03d2)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>