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    def OnFont(self, evt):
        if not self.rtc.HasSelection():
            return

        r = self.rtc.GetSelectionRange()
        fontData = wx.FontData()
        fontData.EnableEffects(False)
        attr = rt.TextAttrEx()
        attr.SetFlags(rt.TEXT_ATTR_FONT)
        if self.rtc.GetStyle(self.rtc.GetInsertionPoint(), attr):
            fontData.SetInitialFont(attr.CreateFont())

        dlg = wx.FontDialog(self, fontData)
        if dlg.ShowModal() == wx.ID_OK:
            fontData = dlg.GetFontData()
            font = fontData.GetChosenFont()
            if font:
                attr.SetFlags(rt.TEXT_ATTR_FONT)
                attr.SetFont(font)
                self.rtc.SetStyle(r, attr)
        dlg.Destroy()

Traceback (most recent call last):
  File "editor.py", line 235, in OnFont
    if self.rtc.GetStyle(self.rtc.GetInsertionPoint(), attr):
  File "/usr/lib/python2.5/site-packages/wx-2.8-gtk2-unicode/wx/richtext.py", line 2468, in GetStyle
    return _richtext.RichTextCtrl_GetStyle(*args, **kwargs)
TypeError: in method 'RichTextCtrl_GetStyle', expected argument 3 of type 'wxRichTextAttr &'
swig/python detected a memory leak of type 'wxTextAttrEx *', no destructor found.

    def OnFont(self, evt):
        if not self.rtc.HasSelection():
            return

        r = self.rtc.GetSelectionRange()
        fontData = wx.FontData()
        fontData.EnableEffects(False)
        attr = rt.TextAttrEx()
        attr.SetFlags(rt.TEXT_ATTR_FONT)
        if self.rtc.GetStyle(self.rtc.GetInsertionPoint(), attr):
            fontData.SetInitialFont(attr.GetFont())

        dlg = wx.FontDialog(self, fontData)
        if dlg.ShowModal() == wx.ID_OK:
            fontData = dlg.GetFontData()
            font = fontData.GetChosenFont()
            if font:
                attr.SetFlags(rt.TEXT_ATTR_FONT)
                attr.SetFont(font)
                self.rtc.SetStyle(r, attr)
        dlg.Destroy()