diff --git a/include/nana/gui/widgets/treebox.hpp b/include/nana/gui/widgets/treebox.hpp
index eaae22e5..a6342404 100644
--- a/include/nana/gui/widgets/treebox.hpp
+++ b/include/nana/gui/widgets/treebox.hpp
@@ -300,6 +300,12 @@ namespace nana
 					return any_cast<T>(&_m_value());
 				}
 
+				template<typename T>
+				T * value_ptr()
+				{
+					return any_cast<T>(&_m_value());
+				}
+
 				template<typename T>
 				const T& value() const
 				{
@@ -309,6 +315,15 @@ namespace nana
 					return *p;
 				}
 
+				template<typename T>
+				T& value()
+				{
+					auto p = any_cast<T>(&_m_value());
+					if (nullptr == p)
+						throw std::runtime_error("treebox::value<T>() Invalid type of value.");
+					return *p;
+				}
+
 				template<typename T>
 				item_proxy & value(T&& t)
 				{