Add SetFocusIgnoringChildren() to wxControlContainer. This

makes corresponding hacks in wxListCtrl and wxTreeCtrl
    obsolete. With docs.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30927 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/treectlg.cpp

@@ -415,7 +415,7 @@ void wxTreeTextCtrl::Finish()
 
         m_finished = true;
 
-        m_owner->SetFocus(); // This doesn't work. TODO.
+        m_owner->SetFocusIgnoringChildren();
     }
 }