public:
TestTree(wxWindow* parent, wxWindowID id, const wxPoint& pt = wxDefaultPosition,
const wxSize& sz = wxDefaultSize, long style = wxTR_HAS_BUTTONS);
public:
TestTree(wxWindow* parent, wxWindowID id, const wxPoint& pt = wxDefaultPosition,
const wxSize& sz = wxDefaultSize, long style = wxTR_HAS_BUTTONS);