On Tue, Jan 13, 2015 at 10:14 AM, Jean-Marc Lasgouttes <lasgout...@lyx.org> wrote: > Le 13/01/2015 01:22, Uwe Stöhr a écrit : >> >> My change allowed to set the line width to any value you like. As i had >> to set a default width I chose 0.5 because this is already a LaTeX >> default width (if I remember correctly). >> Anyway, the thickness must be a float to allow full control of the line >> width. > > > You can use whatever you want, but pixels are pixels. At the end the width > of the line will be an integer. The only reason why QPen::setWidthF exists > is that one may have transformed the painter space so that, for example the > unit is millimeter (think printer). This is not the case here obviously. >
I guess that when you use AntiAliasing, you would be able to actually draw non-integer widths. Don't know how Qt handles it though. Vincent
