Tkinter - One Canvas to Rule Them All?

[Dave Harris]

I derived two Frame classes and created a Canvas in each. I was extremely
surprised when frame1.canvas.d elete('all') erased the image in
frame2.canvas!

I resolved my trouble by assigning tags and doing the deletion by tag. No
big deal.

I deduce from this behavior that there is a single database behind the
scenes for the Canvas implementation.

Just an observation. Maybe it will save somebody some head-scratching...

Dave Harris

[Peter Otten]

Re: Tkinter - One Canvas to Rule Them All?

Dave Harris wrote:
[color=blue]
> I derived two Frame classes and created a Canvas in each. I was extremely
> surprised when frame1.canvas.d elete('all') erased the image in
> frame2.canvas![/color]

Maybe you are accidentally deleting the last reference to the image (the
canvas itself doesn't keep one). Care to show some code?
[color=blue]
> I deduce from this behavior that there is a single database behind the
> scenes for the Canvas implementation.[/color]

I can't confirm that.

Peter