Tkinter 8.5 reference: a GUI for Python |  |
Tkinter 8.5 reference: a GUI for Python | |
Certain state changes within a Treeview widget
generate virtual events that you can use to respond to these
changes; see Section 54.8, “Virtual events”.
Whenever there is a change in the selection, either
by items becoming selected or becoming unselected,
the widget generates a “<<TreeviewSelect>>” event.
Whenever an item is opened,
the widget generates a “<<TreeviewOpen>>” event.
Whenever an item is closed, the widget generates a
“<<TreeviewClose>>” event.