Re: [gtkmm] Drawing primitives on top of an image.

[Tassos Bassoukos <abas aix meng auth gr>]

Giannis Georgalis wrote:
[snip]

Hello,
The reason for the "disappearance" of the lines is simple: you shoulkd 
do your draing in the expose handler. Gtk::Image has such a handler for 
expose events, in which case it will draw the exposed parts of the image.

As others have mentioned before me, use a Gtk::DrawingArea, and use the 
expose events to co-ordinate your drawing.

HTH,
Tassos