QPolygon does not detect QPoint on edge ?

[ranshalit]

Hello,

I am using QPolygon which is a simple rectangle (4 points composing rectangle), The I use containsPoint to check if a given point is contained inside the Polygon.
The strange thing is that I see that on a rectangular the points in the bottom edge of the rectangle return false in containsPoint , and the points in the upper edge are always considered inside polygon.

I tried to use both methods of Qt::FillRule, but got same results in both.
Any idea why the algorithms containsPoint behaves like this ?

Thank you.
Ran