[Gambas-user] Drawing on an existing picture

[richard terry]

I need to have a form that allows the user to select a diagram, use the mouse 
to draw on the diagram, and then save either the diagram or the changes to 
the diagram.

I wondered if anyone has done this/has pointers etc. Seems like possible one 
could use in part the icon editor of gambas, though I'm not sure how I would 
proceed.

Thanks for any help.