Hi, Le samedi 19 septembre 2009 à 20:05 +0200, 张玲春 a écrit : > I use cairo to draw a horizontal line, regardless of how much the use > of cairo_line_width set, I found it to be occupied by 2 pixels high > census drawn. I would like to draw a precise line, may I ask how to do http://cairographics.org/FAQ/#sharp_lines Emmanuel.