I took the liberty of updating the wiki entry on autocompletion, attached below.
This version performs case insensitive searches both box Entry and Combobox, and the combobox sets it's popup menu from the completion list. It seems to work fairly well to date. Given I couldn't find an example for an autocompleting combobox, I figured I would share the version I cobbled together from the existing example so others might find it useful. Thanks. ---------------------------------------------------------------------- #!/usr/bin/env python # encoding: utf-8 """ tkentrycomplete.py A tkinter widget that features autocompletion. Created by Mitja Martini on 2008-11-29. Updated by Russell Adams, 2011/01/24 to support Python 3 and Combobox. Licensed same as original (not specified?), or public domain, whichever is less restrictive. """ import sys import os import tkinter import tkinter.ttk __version__ = "1.1" # I may have broken the unicode... tkinter_umlauts=['odiaeresis', 'adiaeresis', 'udiaeresis', 'Odiaeresis', 'Adiaeresis', 'Udiaeresis', 'ssharp'] class AutocompleteEntry(tkinter.Entry): """ Subclass of Tkinter.Entry that features autocompletion. To enable autocompletion use set_completion_list(list) to define a list of possible strings to hit. To cycle through hits use down and up arrow keys. """ def set_completion_list(self, completion_list): self._completion_list = sorted(completion_list, key=str.lower) # Work with a sorted list self._hits = [] self._hit_index = 0 self.position = 0 self.bind('<KeyRelease>', self.handle_keyrelease) def autocomplete(self, delta=0): """autocomplete the Entry, delta may be 0/1/-1 to cycle through possible hits""" if delta: # need to delete selection otherwise we would fix the current position self.delete(self.position, tkinter.END) else: # set position to end so selection starts where textentry ended self.position = len(self.get()) # collect hits _hits = [] for element in self._completion_list: if element.lower().startswith(self.get().lower()): # Match case-insensitively _hits.append(element) # if we have a new hit list, keep this in mind if _hits != self._hits: self._hit_index = 0 self._hits=_hits # only allow cycling if we are in a known hit list if _hits == self._hits and self._hits: self._hit_index = (self._hit_index + delta) % len(self._hits) # now finally perform the auto completion if self._hits: self.delete(0,tkinter.END) self.insert(0,self._hits[self._hit_index]) self.select_range(self.position,tkinter.END) def handle_keyrelease(self, event): """event handler for the keyrelease event on this widget""" if event.keysym == "BackSpace": self.delete(self.index(tkinter.INSERT), tkinter.END) self.position = self.index(tkinter.END) if event.keysym == "Left": if self.position < self.index(tkinter.END): # delete the selection self.delete(self.position, tkinter.END) else: self.position = self.position-1 # delete one character self.delete(self.position, tkinter.END) if event.keysym == "Right": self.position = self.index(tkinter.END) # go to end (no selection) if event.keysym == "Down": self.autocomplete(1) # cycle to next hit if event.keysym == "Up": self.autocomplete(-1) # cycle to previous hit if len(event.keysym) == 1 or event.keysym in tkinter_umlauts: self.autocomplete() class AutocompleteCombobox(tkinter.ttk.Combobox): def set_completion_list(self, completion_list): """Use our completion list as our drop down selection menu, arrows move through menu.""" self._completion_list = sorted(completion_list, key=str.lower) # Work with a sorted list self._hits = [] self._hit_index = 0 self.position = 0 self.bind('<KeyRelease>', self.handle_keyrelease) self['values'] = self._completion_list # Setup our popup menu def autocomplete(self, delta=0): """autocomplete the Combobox, delta may be 0/1/-1 to cycle through possible hits""" if delta: # need to delete selection otherwise we would fix the current position self.delete(self.position, tkinter.END) else: # set position to end so selection starts where textentry ended self.position = len(self.get()) # collect hits _hits = [] for element in self._completion_list: if element.lower().startswith(self.get().lower()): # Match case insensitively _hits.append(element) # if we have a new hit list, keep this in mind if _hits != self._hits: self._hit_index = 0 self._hits=_hits # only allow cycling if we are in a known hit list if _hits == self._hits and self._hits: self._hit_index = (self._hit_index + delta) % len(self._hits) # now finally perform the auto completion if self._hits: self.delete(0,tkinter.END) self.insert(0,self._hits[self._hit_index]) self.select_range(self.position,tkinter.END) def handle_keyrelease(self, event): """event handler for the keyrelease event on this widget""" if event.keysym == "BackSpace": self.delete(self.index(tkinter.INSERT), tkinter.END) self.position = self.index(tkinter.END) if event.keysym == "Left": if self.position < self.index(tkinter.END): # delete the selection self.delete(self.position, tkinter.END) else: self.position = self.position-1 # delete one character self.delete(self.position, tkinter.END) if event.keysym == "Right": self.position = self.index(tkinter.END) # go to end (no selection) if len(event.keysym) == 1: self.autocomplete() # No need for up/down, we'll jump to the popup # list at the position of the autocompletion def test(test_list): """Run a mini application to test the AutocompleteEntry Widget.""" root = tkinter.Tk(className=' AutocompleteEntry demo') entry = AutocompleteEntry(root) entry.set_completion_list(test_list) entry.pack() entry.focus_set() combo = AutocompleteCombobox(root) combo.set_completion_list(test_list) combo.pack() combo.focus_set() # I used a tiling WM with no controls, added a shortcut to quit root.bind('<Control-Q>', lambda event=None: root.destroy()) root.bind('<Control-q>', lambda event=None: root.destroy()) root.mainloop() if __name__ == '__main__': test_list = ('apple', 'banana', 'CranBerry', 'dogwood', 'alpha', 'Acorn', 'Anise' ) test(test_list) ---------------------------------------------------------------------- ------------------------------------------------------------------ Russell Adams rlad...@adamsinfoserv.com PGP Key ID: 0x1160DCB3 http://www.adamsinfoserv.com/ Fingerprint: 1723 D8CA 4280 1EC9 557F 66E8 1154 E018 1160 DCB3 _______________________________________________ Tkinter-discuss mailing list Tkinter-discuss@python.org http://mail.python.org/mailman/listinfo/tkinter-discuss