Das mag wx leider auch nicht...
class MyModalFrame(wx.Frame):
def __init__(self, parent, title = "Modal Frame", size = wx.Size(500, 600)):
wx.Frame.__init__(self, parent, -1, title, size = size)
panel = wx.Panel(self)
panel.SetBackgroundColour("green")
self.MakeModal(True)
self.Bind(wx ...