from wx.lib.combotreebox import ComboTreeBox
import wx
import string


class MyFrame(wx.Frame):

    def __init__(self, parent):
        wx.Frame.__init__(self, parent, id=wx.ID_ANY, title=u"Combo Tree Test", pos=wx.Point(-1, -1),
                          size=wx.Size(400, 40), style=wx.DEFAULT_FRAME_STYLE | wx.TAB_TRAVERSAL)

        combo = ComboTreeBox(self)
        ascii_list = list(string.ascii_uppercase)
        tld_list = ['ace', 'bob', 'cat', 'zed', 'dog']

        for xl in ascii_list:
            item = combo.Append(xl)  # Add a root item

            for xl2 in tld_list:
                upperlist = xl2.upper().split()[0][0]
                if upperlist == xl:
                    combo.Append(xl2, parent=item)

if __name__ == "__main__":
    app = wx.App(False)
    frame = MyFrame(None)
    frame.Show(True)
    app.MainLoop()