CGAL users discussion list

[Laurent Rineau <>]

On Tuesday 25 March 2008 16:13:22 BomBielFil wrote:
> ok thanks, now it runs
> another simple question (sorry but I'm newbie in QT_widget)
> I try this program:
> [...]
> Why I don't see the segment??  I see only a white window

I do not know. With the same code, I do see a segment.

That code example is a too simple one. A graphical window needs to be 
repainted each time the system requires that (when the window is partially 
covered by another one and uncovered, or re-sized). The user manual of 
Qt_widget describes several ways to use the Qt_widget, and your example is 
only the very first one. The manual mentions the drawbacks of that way of 
doing.

-- 
Laurent Rineau
INRIA - Sophia Antipolis
BP 93, 2004 Route des Lucioles
06902 Sophia Antipolis Cedex FRANCE
Tel: +33 4 92 38 78 62 (Fax: +33.4.97.15.53.95)