eliminate -Wextra and -pedantic warnings

include/nana/basic_types.hpp

@@ -337,9 +337,9 @@ namespace nana
 		bool operator==(const color& other) const;
 		bool operator!=(const color& other) const;
 	private:
-		double r_;
-		double g_;
-		double b_;
+		double r_{ 0.0 };
+		double g_{ 0.0 };
+		double b_{ 0.0 };
 		double a_{ 0.0 };	//invisible
 	};
 

include/nana/detail/linux_X11/platform_spec.hpp

@@ -60,6 +60,8 @@ namespace detail
 
 	class charset_conv
 	{
+		charset_conv(const charset_conv&) = delete;
+		charset_conv& operator=(const charset_conv*) = delete;
 	public:
 		charset_conv(const char* tocode, const char* fromcode);
 		~charset_conv();
@@ -118,6 +120,9 @@ namespace detail
 		void update_color();
 		void update_text_color();
 	private:
+		drawable_impl_type(const drawable_impl_type&) = delete;
+		drawable_impl_type& operator=(const drawable_impl_type&) = delete;
+
 		unsigned current_color_{ 0xFFFFFF };
 		unsigned color_{ 0xFFFFFFFF };
 		unsigned text_color_{ 0xFFFFFFFF };

include/nana/gui/detail/general_events.hpp

@@ -429,7 +429,7 @@ namespace nana
 	private:
 		unsigned emitting_count_{ 0 };
 		bool deleted_flags_{ false };
-		std::unique_ptr<std::vector<std::unique_ptr<detail::docker_interface>>> dockers_;
+		std::unique_ptr<std::vector<std::unique_ptr<detail::docker_interface>>> dockers_{ nullptr };
 	};
  
 	struct arg_mouse

include/nana/gui/widgets/spinbox.hpp

@@ -68,7 +68,7 @@ namespace nana
 			private:
 				implementation * const impl_;
 			};
-		};
+		}
 	}//end namespace drawerbase
 
 	/// Spinbox Widget

include/nana/gui/widgets/treebox.hpp

@@ -307,14 +307,14 @@ namespace nana
 				{
 					_m_value() = t;
 					return *this;
-				};
+				}
 
 				template<typename T>
 				item_proxy & value(T&& t)
 				{
 					_m_value() = std::move(t);
 					return *this;
-				};
+				}
 
 				// Undocumentated methods for internal use
 				trigger::node_type * _m_node() const;

include/nana/system/shared_wrapper.hpp

@@ -30,7 +30,7 @@ namespace system
 			typedef void*	module_t;
 			void* symbols(module_t handle, const char* symbol);
 
-		}; //end struct shared_helper
+		} //end namespace shared_helper
 	}//end namespace detail
 
 	class shared_wrapper

include/nana/unicode_bidi.hpp

@@ -60,7 +60,7 @@ namespace nana
 		void _m_resolve_weak_types();
 		void _m_resolve_neutral_types();
 		void _m_resolve_implicit_levels();
-		void _m_reordering_resolved_levels(const char_type*, std::vector<entity> & reordered);
+		void _m_reordering_resolved_levels(std::vector<entity> & reordered);
 		static bidi_category _m_bidi_category(bidi_char);
 		static bidi_char _m_char_dir(char_type);
 	private: