Unicode problem on copy

Hi everyone!
I'm using the latest wxGlade from BitBucket (branch 0.7.0) and I'm 
getting an error when I try to copy something that contains a non-ASCII 
character.

Here's what wxGlade is logging:


2015-01-13 12:24:19,008 root ERROR: An unhandled exception occurred
An unexpected error occurred!

Date and time:       2015-01-13T12:24:19.008869
Python version:      2.7.3
wxPython version:    2.8.12.1
wxWidgets platform:  __WXGTK__
wxGlade version:     0.7.0
Language code:       en_US
Encoding:            UTF-8
Filesystem encoding: UTF-8

Exception type:      <type 'exceptions.UnicodeEncodeError'>
Exception details:   'ascii' codec can't encode character u'\xe0' in 
position 127: ordinal not in range(128)
Application stack trace:
Stack frame at level 0
======================
   File "/home/joril/opt/wxGlade-0.7.0-dev/clipboard.py", line 33
   Function "_widget2repr(self=<clipboard._WidgetDataObject; proxy of 
<Swig Object of type 'wxCustomDataObject *' at 0x4040870> >, *args=(0, 
0, 0, u'<object class="wxStaticText" name="lbl_gest_lavor
azione" base="EditStaticText">\n    <attribute>1</attribute>\n 
<label>Attivit\xe0</label>\n</object>\n'))"
   Source code context:
               *args contains option, flag, border, xml_str.
               """
               assert len(args) == 4
   ->          return ":".join([str(elem) for elem in args])

           def GetWidgetData(self):
               """\
   Local variables:
   -> self (<class 'clipboard._WidgetDataObject'>): 
<clipboard._WidgetDataObject; proxy of <Swig Object of type 
'wxCustomDataObject *' at 0x4040870> >
   -> args (<type 'tuple'>): (0,
  0,
  0,
  u'<object class="wxStaticText" name="lbl_gest_lavorazione" 
base="EditStaticText">\n    <attribute>1</attribute>\n 
<label>Attivit\xe0</label>\n</object>\n')
   -> elem (<type 'unicode'>): u'<object class="wxStaticText" 
name="lbl_gest_lavorazione" base="EditStaticText">\n 
<attribute>1</attribute>\n    <label>Attivit\xe0</label>\n</object>\n'



I patched clipboard.py like this:

return ":".join([unicode(elem).encode("utf-8") for elem in args])

but I don't know if there's a better way.

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