[Gambas-bugtracker] Bug #2213: Window object does not draw properly in gtk3 only

[bugtracker at gambaswiki.org]

http://gambaswiki.org/bugtracker/edit?object=BUG.2213&from=L21haW4-

Comment #5 by Benoît MINISINI:

Try with a DrawingArea instead of a Window, and set the background of the DrawingArea explicitly.