Canvas.Rectangle

I'm developing a program which enables the enduser to
 register hotspot's on several different pictures in a Table.
 So when a enduser moves the mouse over a spesific area on the
 picture "Dbimage" a popupmenu will appeare.

My problem is that when i try to use Canvas.Rectangle on the
dbImage draw a Rectangle it doesen't get visible. When I try to
do the same on the Form not on the DbImage. It works.

How can I get around this problem..

Dag ?verby
Frydenbergv 48,
OSLO
NORWAY

E-mail : dove...@sn.no
Personal Home Page : http://www.sn.no/~doverby