[matplotlib-devel] Figures don't keep a reference to widgets.

[Charles R H. <cha...@gm...>]

This turned up when I generated blowups of portions of a thumbnail image by
clicking on various locations. The blowups contained a button, but the
button was inoperative. My guess is that when the click handler that created
the blowup exited it took the button object with it. My workaround was to
create the various button handlers in the Button __init__ method so that
they hung onto a reference to self. This may not be the best approach so
I've attached a file for discussion.

Chuck