add throw() for some functions

source/gui/widgets/combox.cpp

@@ -201,7 +201,7 @@ namespace nana
 
 					if (new_where == state_.pointer_where)
 						return false;
-					
+
 					state_.pointer_where = new_where;
 					return true;
 				}
@@ -261,7 +261,7 @@ namespace nana
 						state_.lister->move_items(upwards, circle);
 						return;
 					}
-					
+
 					auto pos = module_.index;
 					if (upwards)
 					{
@@ -412,7 +412,7 @@ namespace nana
 				{
 					if (image_pixels_ == px)
 						return false;
-					
+
 					image_pixels_ = px;
 					return true;
 				}
@@ -988,7 +988,7 @@ namespace nana
 				API::refresh_window(*this);
 		}
 
-		nana::string combox::_m_caption() const
+		nana::string combox::_m_caption() const throw()
 		{
 			internal_scope_guard lock;
 			auto editor = _m_impl().editor();

source/gui/widgets/group.cpp

@@ -234,7 +234,7 @@ namespace nana{
 		_m_init();
 	}
 
-	::nana::string group::_m_caption() const
+	::nana::string group::_m_caption() const throw()
 	{
 		return impl_->caption.caption();
 	}

source/gui/widgets/label.cpp

@@ -779,13 +779,6 @@ namespace nana
 			caption(text);
 		}
 
-		label::label(window wd, const nana::char_t* text, bool visible)
-		{
-			create(wd, rectangle(), visible);
-			bgcolor(API::bgcolor(wd));
-			caption(text);
-		}
-
 		label::label(window wd, const rectangle& r, bool visible)
 		{
 			create(wd, r, visible);
@@ -801,7 +794,7 @@ namespace nana
 			return *this;
 		}
 
-		bool label::transparent() const
+		bool label::transparent() const throw()
 		{
 			return (bground_mode::basic == API::effects_bground_mode(*this));
 		}
@@ -825,9 +818,10 @@ namespace nana
 			return *this;
 		}
 
-		void label::click_for(window associated_window)
+		label& label::click_for(window associated_window) throw()
 		{
 			get_drawer_trigger().impl()->for_associated_wd = associated_window;
+			return *this;
 		}
 
 		nana::size label::measure(unsigned limited) const

source/gui/widgets/spinbox.cpp

@@ -86,7 +86,7 @@ namespace nana
 					ss >> v;
 					if (v < begin_ || last_ < v)
 						return false;
-	
+
 					diff = (value_ != v);
 					value_ = v;
 					return true;
@@ -297,7 +297,7 @@ namespace nana
 					bool diff;
 					if (!range_->value(value_str, diff))
 						return false;
-					
+
 					if (diff)
 						reset_text();
 					return true;
@@ -403,7 +403,7 @@ namespace nana
 						_m_draw_spins(buttons::none);
 						return true;
 					}
-					
+
 					return false;
 				}
 
@@ -435,7 +435,7 @@ namespace nana
 					auto size = API::window_size(editor_->window_handle());
 					if (size.width > 18)
 						return{ static_cast<int>(size.width - 16), 0, 16, size.height };
-					
+
 					return{ 0, 0, size.width, size.height };
 				}
 
@@ -513,7 +513,7 @@ namespace nana
 			{
 				impl_->attach(wdg, graph);
 			}
-			
+
 			void drawer::refresh(graph_reference)
 			{
 				impl_->render();
@@ -526,7 +526,7 @@ namespace nana
 				impl_->editor()->reset_caret();
 				API::lazy_refresh();
 			}
-			
+
 			void drawer::mouse_wheel(graph_reference, const arg_wheel& arg)
 			{
 				impl_->mouse_wheel(arg.upwards);
@@ -557,7 +557,7 @@ namespace nana
 				impl_->render();
 				API::lazy_refresh();
 			}
-			
+
 			void drawer::key_press(graph_reference, const arg_keyboard& arg)
 			{
 				if (impl_->editor()->respond_key(arg))
@@ -682,7 +682,7 @@ namespace nana
 		modifier(static_cast<std::wstring>(::nana::charset(prefix_utf8, ::nana::unicode::utf8)), static_cast<std::wstring>(::nana::charset(suffix_utf8, ::nana::unicode::utf8)));
 	}
 
-	::nana::string spinbox::_m_caption() const
+	::nana::string spinbox::_m_caption() const throw()
 	{
 		internal_scope_guard lock;
 		auto editor = get_drawer_trigger().impl()->editor();

source/gui/widgets/textbox.cpp

@@ -515,7 +515,7 @@ namespace drawerbase {
 		}
 
 		//Override _m_caption for caption()
-		nana::string textbox::_m_caption() const
+		nana::string textbox::_m_caption() const throw()
 		{
 			internal_scope_guard lock;
 			auto editor = get_drawer_trigger().editor();

source/gui/widgets/widget.cpp

@@ -2,8 +2,8 @@
  *	The fundamental widget class implementation
  *	Copyright(C) 2003-2015 Jinhao(cnjinhao@hotmail.com)
  *
- *	Distributed under the Boost Software License, Version 1.0. 
- *	(See accompanying file LICENSE_1_0.txt or copy at 
+ *	Distributed under the Boost Software License, Version 1.0.
+ *	(See accompanying file LICENSE_1_0.txt or copy at
  *	http://www.boost.org/LICENSE_1_0.txt)
  *
  *	@file: nana/gui/widgets/widget.cpp
@@ -54,7 +54,7 @@ namespace nana
 			widget& wdg_;
 		};
 
-		nana::string widget::caption() const
+		nana::string widget::caption() const throw()
 		{
 			return this->_m_caption();
 		}
@@ -64,7 +64,7 @@ namespace nana
 			_m_caption(std::wstring(::nana::charset(utf8, ::nana::unicode::utf8)));
 		}
 
-		void widget::caption(nana::string str)
+		void widget::caption(std::wstring str)
 		{
 			_m_caption(std::move(str));
 		}
@@ -125,7 +125,7 @@ namespace nana
 
 		bool widget::empty() const
 		{
-			return (nullptr == handle());	
+			return (nullptr == handle());
 		}
 
 		void widget::focus()
@@ -252,7 +252,7 @@ namespace nana
 		void widget::_m_complete_creation()
 		{}
 
-		nana::string widget::_m_caption() const
+		nana::string widget::_m_caption() const throw()
 		{
 			return API::dev::window_caption(handle());
 		}