[wxPython-users] Init Question

[Christopher Barker]

Telly Williams wrote:
> --------------------------------
> class MyTreeCtrl(wx.TreeCtrl):
>     def __init__(self, parent, id, pos, size, style, log):
>         wx.TreeCtrl.__init__(self, parent, id, pos, size, style)
> --------------------------------
> 
> 	I still can't understand why you instantiate the wx.TreeCtrl (or any
> other object, for that matter), def __init__ the TreeCtrl, and then
> __init__ it again.  What's with initiating it twice?  It was already
> done, right?  Thank you.

This is very standard subclassing in Python. You need to manually call 
the superclass' __init__ if you want it to run. Otherwise, your __init__ 
has over-ridden the superclass' one, so it will never get called.

If there is nothing to be done in the subclass __init__, you can not 
define one, and then the superclass' one will get called.

You really need to understand OO in Python to be able to use wxPython:

Note that the first entry in:

http://wiki.wxpython.org/index.cgi/How_to_Learn_wxPython

is: "Learn Python"


-Chris




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