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pythontkintertreeview

Python Tkinter Treeview - How do I determine if the last child is displayed?

I have created a treeview that displays incoming messages. As the number of messages received exceeds the size of the treeview window, I use this line of code self.logTree.yview_moveto(1) to make sure the latest message is always displayed at the bottom of the window. However, I want to stop this behavior if the user scrolls up. I need a means for determining whether the last received message is displayed. How can I do this?

Thanks

Solution

  • You can use bbox() to check whether an item of Treeview is visible:

    # get the iid of last item
last = tree.get_children()[-1]
# bbox() returns the bounding box of the item if it is visible
# otherwise it returns empty string
visible = tree.bbox(last) != ""