added wxSetCCUnicodeFormat() and use it in wxTreeCtrl/wxToolBar; also replaced SendMessage(LVM_SETUNICODEFORMAT) with a call to it in wxListCtrl

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@26280 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/treectrl.cpp

@@ -757,6 +757,8 @@ bool wxTreeCtrl::Create(wxWindow *parent,
 
     SetSize(pos.x, pos.y, size.x, size.y);
 
+    wxSetCCUnicodeFormat(GetHwnd());
+
     return true;
 }