Regression from Qt 4.8.
In Qt 4.8, creating a QDialog with a setFixedSize(x,y) will prevent on Windows to have resize cursor arrow in the border of the dialog, it's normal because the user can't do it.
In Qt 5.x, the resize cursors is present even the dialog can't be resize, it's missleading the user.
|For Gerrit Dashboard: QTBUG-32663|
|61988,2||Windows: Add hit test handling for non-client areas.||stable||qt/qtbase||Status: MERGED||+2||0|