collective behaviour of canvas in Tkinter

[Doug Hellmann]

T.Rafie at ALCATEL.de wrote:
> 
> If one wants to move a single canvas item, say item, on a base canvas
> base one can move it
> using  base.move(item, stepx, stepy) . I  want to shift a collection
> of items  (item1,item2,...) by
> the same amount (stepx,stepy). The only solution i found was using a
> loop over all items
> (or alternatively use  map one time).  But it became very slow for a
> large collection - a few thousend.
> Is there a possibility to bind them together, acting as a collective
> (as one could imagine that
> all letters in a text-canvas-item are bound together and the
> text-canvas can be moved as
> one picture)?

You've got exactly the right idea.  Take a look at lib-tk/Canvas.py and
the Group class defined there.  You can specify that canvas objects
belong to a group, and then treat the group as though it were a single
object for moving, etc.

Doug