Code: Alles auswählen
import Tkinter as tk
class ListboxTest(object):
    def __init__(self, master):
        self.items = ["eins", "zwei", "drei", "und als letztes vier"]
        self.listbox1 = tk.Listbox(
            master,
            selectmode=tk.MULTIPLE, # multiple choice
            #selectmode=tk.SINGLE # single select mode
            height=5, width=80
        )
        self.listbox1.pack()
        for txt in self.items:
            self.listbox1.insert(tk.END, txt)
        self.listbox2 = tk.Listbox(
            master,
            selectmode=tk.MULTIPLE, # multiple choice
            #selectmode=tk.SINGLE # single select mode
            height=5, width=80
        )
        self.listbox2.pack()
        for txt in self.items:
            self.listbox2.insert(tk.END, txt)
if __name__ == '__main__':
    root = tk.Tk()
    ListboxTest(root)
    root.mainloop()



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