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    <p>I know this is pretty old, but I think the solution is a bit more simple than those proferred here. Assuming that you <strong>always</strong> want the listboxes to be in agreement, then the above two answers aren't even complete solutions - changing selection by means of the arrow keys will scroll one listbox but not the other.</p> <p>So, looking at the answers, I asked - why aren't they hooking the yscrollcommand callback instead of just sending it straight to the scrollbar? So, I did just that:</p> <pre><code>try: from Tkinter import * except ImportError: from tkinter import * class MultipleScrollingListbox(Tk): def __init__(self): Tk.__init__(self) self.title('Scrolling Multiple Listboxes') #the shared scrollbar self.scrollbar = Scrollbar(self, orient='vertical') #note that yscrollcommand is set to a custom method for each listbox self.list1 = Listbox(self, yscrollcommand=self.yscroll1) self.list1.pack(fill='y', side='left') self.list2 = Listbox(self, yscrollcommand=self.yscroll2) self.list2.pack(expand=1, fill='both', side='left') self.scrollbar.config(command=self.yview) self.scrollbar.pack(side='right', fill='y') #fill the listboxes with stuff for x in xrange(30): self.list1.insert('end', x) self.list2.insert('end', x) #I'm sure there's probably a slightly cleaner way to do it than this #Nevertheless - whenever one listbox updates its vertical position, #the method checks to make sure that the other one gets updated as well. #Without the check, I *think* it might recurse infinitely. #Never tested, though. def yscroll1(self, *args): if self.list2.yview() != self.list1.yview(): self.list2.yview_moveto(args[0]) self.scrollbar.set(*args) def yscroll2(self, *args): if self.list1.yview() != self.list2.yview(): self.list1.yview_moveto(args[0]) self.scrollbar.set(*args) def yview(self, *args): self.list1.yview(*args) self.list2.yview(*args) if __name__ == "__main__": root = MultipleScrollingListbox() root.mainloop() </code></pre>
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