diff --git a/include/nana/gui/widgets/skeletons/text_editor.hpp b/include/nana/gui/widgets/skeletons/text_editor.hpp
index c2050a66..0725d4bd 100644
--- a/include/nana/gui/widgets/skeletons/text_editor.hpp
+++ b/include/nana/gui/widgets/skeletons/text_editor.hpp
@@ -134,6 +134,7 @@ namespace nana{	namespace widgets
 			std::size_t undo_max_steps() const;
 
 			renderers& customized_renderers();
+			void clear_undo();	///< same with undo_max_steps(0)
 
 			unsigned line_height() const;
 			unsigned screen_lines() const;
@@ -154,8 +155,9 @@ namespace nana{	namespace widgets
 			void show_caret(bool isshow);
 
 			bool selected() const;
+			bool get_selected_points(nana::upoint&, nana::upoint&) const;
+
 			bool select(bool);
-			bool get_select_points(nana::upoint&, nana::upoint&) const;
 
 			/// Sets the end position of a selected string.
 			void set_end_caret();
diff --git a/include/nana/gui/widgets/textbox.hpp b/include/nana/gui/widgets/textbox.hpp
index 6a8af7ff..ed97d8a5 100644
--- a/include/nana/gui/widgets/textbox.hpp
+++ b/include/nana/gui/widgets/textbox.hpp
@@ -162,6 +162,9 @@ namespace nana
         /// Read the text from a specified line. It returns true for success.
 		bool getline(std::size_t pos, std::string&) const;
 
+		/// Read the text from a specified line with a set offset. It returns true for success.
+		bool getline(std::size_t line_index,std::size_t offset,std::string& text) const;
+
 		/// Gets the caret position
 		/// Returns true if the caret is in the area of display, false otherwise.
 		bool caret_pos(point& pos, bool text_coordinate) const;
@@ -196,6 +199,7 @@ namespace nana
 
         /// Returns true if some text is selected.
 		bool selected() const;
+		bool get_selected_points(nana::upoint &a, nana::upoint &b) const;
 
         /// Selects/unselects all text.
 		void select(bool);
@@ -215,6 +219,8 @@ namespace nana
 		textbox& from(int);
 		textbox& from(double);
 
+		void clear_undo();
+
 		void set_highlight(const std::string& name, const ::nana::color& fgcolor, const ::nana::color& bgcolor);
 		void erase_highlight(const std::string& name);
 		void set_keywords(const std::string& name, bool case_sensitive, bool whole_word_match, std::initializer_list<std::wstring> kw_list);
diff --git a/include/nana/paint/graphics.hpp b/include/nana/paint/graphics.hpp
index a2fb04bb..c38bff7f 100644
--- a/include/nana/paint/graphics.hpp
+++ b/include/nana/paint/graphics.hpp
@@ -51,6 +51,8 @@ namespace nana
 			bool italic() const;
 			native_font_type handle() const;
 			void release();
+			bool strikeout() const;
+			bool underline() const;
 
 			font& operator=(const font&);
 			bool operator==(const font&) const;
diff --git a/source/gui/widgets/skeletons/text_editor.cpp b/source/gui/widgets/skeletons/text_editor.cpp
index 00dd0d71..3e4c8714 100644
--- a/source/gui/widgets/skeletons/text_editor.cpp
+++ b/source/gui/widgets/skeletons/text_editor.cpp
@@ -1574,7 +1574,8 @@ namespace nana{	namespace widgets
 				_m_handle_move_key(arg);
 				break;
 			case keyboard::os_del:
-				if (this->attr().editable)
+				// send delete to set_accept function
+				if (this->attr().editable && (!impl_->capacities.pred_acceptive || impl_->capacities.pred_acceptive(key)))
 					del();
 				break;
 			default:
@@ -1746,6 +1747,13 @@ namespace nana{	namespace widgets
 			return impl_->undo.max_steps();
 		}
 
+		void text_editor::clear_undo()
+		{
+			auto size = impl_->undo.max_steps();
+			impl_->undo.max_steps(0);
+			impl_->undo.max_steps(size);
+		}
+
 		auto text_editor::customized_renderers() -> renderers&
 		{
 			return impl_->customized_renderers;
@@ -2065,6 +2073,25 @@ namespace nana{	namespace widgets
 			return (select_.a != select_.b);
 		}
 
+		bool text_editor::get_selected_points(nana::upoint &a, nana::upoint &b) const
+		{
+			if (select_.a == select_.b)
+				return false;
+
+			if (select_.a < select_.b)
+			{
+				a = select_.a;
+				b = select_.b;
+			}
+			else
+			{
+				a = select_.b;
+				b = select_.a;
+			}
+
+			return true;
+		}
+
 		void text_editor::set_end_caret()
 		{
 			bool new_sel_end = (select_.b != points_.caret);
@@ -2097,25 +2124,6 @@ namespace nana{	namespace widgets
 			return false;
 		}
 
-		bool text_editor::get_select_points(nana::upoint& a, nana::upoint& b) const
-		{
-			if (select_.a == select_.b)
-				return false;
-
-			if (select_.a < select_.b)
-			{
-				a = select_.a;
-				b = select_.b;
-			}
-			else
-			{
-				a = select_.b;
-				b = select_.a;
-			}
-
-			return true;
-		}
-
 		bool text_editor::hit_text_area(const point& pos) const
 		{
 			return _m_text_area().is_hit(pos);
@@ -2124,7 +2132,7 @@ namespace nana{	namespace widgets
 		bool text_editor::hit_select_area(nana::upoint pos, bool ignore_when_select_all) const
 		{
 			nana::upoint a, b;
-			if(get_select_points(a, b))
+			if (get_selected_points(a, b))
 			{
 				if (ignore_when_select_all)
 				{
@@ -3046,7 +3054,7 @@ namespace nana{	namespace widgets
 		nana::upoint text_editor::_m_erase_select()
 		{
 			nana::upoint a, b;
-			if (get_select_points(a, b))
+			if (get_selected_points(a, b))
 			{
 				auto & textbase = this->textbase();
 				if(a.y != b.y)
@@ -3077,7 +3085,7 @@ namespace nana{	namespace widgets
 			std::wstring text;
 			
 			nana::upoint a, b;
-			if (get_select_points(a, b))
+			if (get_selected_points(a, b))
 			{
 				auto & textbase = this->textbase();
 				if (a.y != b.y)
@@ -3168,7 +3176,7 @@ namespace nana{	namespace widgets
 		bool text_editor::_m_cancel_select(int align)
 		{
 			nana::upoint a, b;
-			if (get_select_points(a, b))
+			if (get_selected_points(a, b))
 			{
 				switch(align)
 				{
@@ -3263,7 +3271,7 @@ namespace nana{	namespace widgets
 				const bool at_left = (select_.b < select_.a);
 
 				nana::upoint a, b;
-				get_select_points(a, b);
+				get_selected_points(a, b);
 				if (caret.y < a.y || (caret.y == a.y && caret.x < a.x))
 				{//forward
 					undo_ptr->set_caret_pos();
@@ -3459,7 +3467,7 @@ namespace nana{	namespace widgets
 			const wchar_t *sbegin = nullptr, *send = nullptr;
 
 			nana::upoint a, b;
-			if (get_select_points(a, b))
+			if (get_selected_points(a, b))
 			{
 				if (a.y < text_coord.y && text_coord.y < b.y)
 				{
diff --git a/source/gui/widgets/textbox.cpp b/source/gui/widgets/textbox.cpp
index c51fb4d4..195ea935 100644
--- a/source/gui/widgets/textbox.cpp
+++ b/source/gui/widgets/textbox.cpp
@@ -322,6 +322,25 @@ namespace drawerbase {
 			return false;
 		}
 
+		bool textbox::getline(std::size_t line_index,std::size_t start_point,std::string& text) const
+		{
+			internal_scope_guard lock;
+			auto editor = get_drawer_trigger().editor();
+			if(editor)
+			{
+				std::wstring line_text;
+				if(editor->getline(line_index,line_text))
+				{
+					if(line_text.length() >= start_point)
+					{
+						text = to_utf8(line_text.substr(start_point));
+						return true;
+					}
+				}
+			}
+			return false;
+		}
+
 		/// Gets the caret position
 		bool textbox::caret_pos(point& pos, bool text_coordinate) const
 		{
@@ -464,6 +483,13 @@ namespace drawerbase {
 			return (editor ? editor->selected() : false);
 		}
 
+		bool textbox::get_selected_points(nana::upoint &a, nana::upoint &b) const
+		{
+			internal_scope_guard lock;
+			auto editor = get_drawer_trigger().editor();
+			return (editor ? editor->get_selected_points(a, b) : false);
+		}
+
 		void textbox::select(bool yes)
 		{
 			internal_scope_guard lock;
@@ -479,7 +505,7 @@ namespace drawerbase {
 			internal_scope_guard lock;
 			auto editor = get_drawer_trigger().editor();
 			if (editor)
-				editor->get_select_points(points.first, points.second);
+				editor->get_selected_points(points.first, points.second);
 
 			return points;
 		}
@@ -542,6 +568,11 @@ namespace drawerbase {
 			return *this;
 		}
 
+		void textbox::clear_undo()
+		{
+			get_drawer_trigger().editor()->clear_undo();
+		}
+
 		void textbox::set_highlight(const std::string& name, const ::nana::color& fgcolor, const ::nana::color& bgcolor)
 		{
 			internal_scope_guard lock;
diff --git a/source/paint/graphics.cpp b/source/paint/graphics.cpp
index aa606f4e..2114d69a 100644
--- a/source/paint/graphics.cpp
+++ b/source/paint/graphics.cpp
@@ -156,6 +156,18 @@ namespace paint
 			return (impl_->font_ptr->italic);
 		}
 
+		bool font::underline() const
+		{
+			if(empty()) return false;
+			return (impl_->font_ptr->underline);
+		}
+
+		bool font::strikeout() const
+		{
+			if(empty()) return false;
+			return (impl_->font_ptr->strikeout);
+		}
+
 		native_font_type font::handle() const
 		{
 			if(empty())	return nullptr;