Strange behaviour with QPen

**franco.amato** · 18th January 2010, 15:30

Originally Posted by boudie

What does it look like when you don't use QPainter::Antialiasing?

And what happens when you set pen width to zero: a "cosmetic pen"? That one should always draw 1 pixel wide.

I removed the Antialiasing flag and seems solved the problem but why???

**wagmare** · 19th January 2010, 05:19

your painted line will have some strange looking like a small saw tooth wave normally rather than straight .. try to draw a cross line u can see it clearly .. antialiasing is like coating or filling the scramble space ..
see the link
http://doc.trolltech.com/4.3/coordsy...iased-painting

**franco.amato** · 19th January 2010, 05:51

Originally Posted by wagmare

your painted line will have some strange looking like a small saw tooth wave normally rather than straight .. try to draw a cross line u can see it clearly .. antialiasing is like coating or filling the scramble space ..
see the link
http://doc.trolltech.com/4.3/coordsy...iased-painting

Thank you for your explanation. This is why the width of my line is bigger than 1 pixel