_treeview_element.Click() uses ClickInput()

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What steps will reproduce the problem?
1. In common_control.py class _treeview_element contain method Click
2. Method Click uses another method HwndWrapper.ClickInput
3. It is inconsistent, HwndWrapper has Click and ClickInput methods and they 
works in different way.

What is the expected output? What do you see instead?
The _treeview_element.Click() should use HwndWrapper.Click()
Probably _treeview_element.ClickInput()should be added.

What version of the product are you using? On what operating system?
0.4.1. In 0.4.2 I saw the same issue

Please provide any additional information below.

Original issue reported on code.google.com by far...@gmail.com on 5 Feb 2014 at 8:01