kivy editable multicolumn list

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From	Paulo da Silva <p_s_d_a_s_i_l_v_a_ns@netcabo.pt>
Newsgroups	comp.lang.python
Subject	kivy editable multicolumn list
Date	Tue, 15 Sep 2015 03:31:49 +0100
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Hi all.
Not sure if this is the place to ask about kivy ...
I apologize if not.

I am playing with the example here
https://gist.github.com/geojeff/4442405

Now I would like to change the background color the editable field.

So I added
	def __init__(self,**kwargs):
		super(EditableLabel,self).__init__(**kwargs)
		with self.canvas.before:
			Color(0,1,0)
			Rectangle(pos=self.pos,size=self.size)
			print(self.pos,self.size)

to class EditableLabel.

But when entering __init__ self.pos and self.size do not have the
correct pos/size for the EditableLabel.

How can I fix this? Please no kv solutions. I need dynamic change it in
a real example.

Thanks for any help.

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Thread

kivy editable multicolumn list Paulo da Silva <p_s_d_a_s_i_l_v_a_ns@netcabo.pt> - 2015-09-15 03:31 +0100
  RE: kivy editable multicolumn list David Aldrich <David.Aldrich@EMEA.NEC.COM> - 2015-09-15 07:44 +0000
    Re: kivy editable multicolumn list Paulo da Silva <p_s_d_a_s_i_l_v_a_ns@netcabo.pt> - 2015-09-17 02:02 +0100
  Re: kivy editable multicolumn list Laura Creighton <lac@openend.se> - 2015-09-15 12:42 +0200
    Re: kivy editable multicolumn list Paulo da Silva <p_s_d_a_s_i_l_v_a_ns@netcabo.pt> - 2015-09-17 02:17 +0100

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