Merge branch 'hotfix-1.6.2' into develop-1.7

include/nana/gui/widgets/checkbox.hpp

@@ -104,6 +104,7 @@ namespace drawerbase
 		struct element_tag
 		{
 			checkbox * uiobj;
+			event_handle eh_clicked;
 			event_handle eh_checked;
 			event_handle eh_destroy;
 			event_handle eh_keyboard;

include/nana/gui/widgets/group.hpp

@@ -92,6 +92,9 @@ namespace nana{
 		/// Determines whether a specified option is checked, it throws an out_of_range if !(pos < number of options)
 		bool option_checked(std::size_t pos) const;
 
+		/// Change typeface of caption label ( does not effect child widgets )
+		void typeface( const nana::paint::font& font );
+
 		group& enable_format_caption(bool format);
 
 		group& collocate() noexcept;
@@ -101,7 +104,7 @@ namespace nana{
 		void field_display(const char* field_name, bool display); ///<Displays/Discards an existing field.
 		bool field_display(const char* field_name) const;	///<Determines whether the specified field is displayed.
 		void erase(window handle);				///< Erases a window from field.
-		
+
 		template<typename Widget, typename ...Args>
 		Widget* create_child(const char* field, Args && ... args)
 		{

include/nana/gui/widgets/slider.hpp

@@ -151,7 +151,13 @@ namespace nana
 		bool vertical() const;
 		void maximum(unsigned);
 		unsigned maximum() const;
-		void value(unsigned);
+
+		/** Set slider value
+            @param[in] v new value for slider.
+            v will be clipped to the range 0 to maximum
+        */
+		void value(int );
+
 		unsigned value() const;
 		unsigned move_step(bool forward);                         ///< Increase or decrease the value of slider.
 		unsigned adorn() const;