[Fxruby-users] Attaching a Canvas to a ScrollArea

[Claus S. <Doc...@gm...>]

I have just recently started using FXRuby (~1 month), and up until
this last week I was working mostly with FXTable... However, because
FXTable doesn't let me individually set the color of FXTableItems, I
tried to rewrite my programs using an FXCanvas and drawing the items
myself. I started with the 'bounce.rbw' example that comes with the
Ruby installer (using 1.8.0-10). I got the drawing part sorted out.
However, I want to put the canvas in a FXScrollArea because eventually
it will be larger than the screen... and that's what I'm having
trouble with. I assume that I'm probably missing out on something...
the program that I started with uses an FXImage to draw the actual
image, then puts it on the canvas (or so I understand... please
correct me if I'm wrong). I thought that if I put the ScrollArea in
the MainWindow and then use it as the parent for the canvas I could
scroll the canvas, but something seems to have gon ehorribly wrong
along the way. I am unsure as to how the backbuffer (FXImage) part
operates. I'd appreciate if someone could enlighten me on this.
Attached is the tarball with my program. The part that I'm having
problems with starts on line 185. Thank you in advance for any
assistance...
   -CWS