Get(Class)DefaultAttributes() for wxGTK controls

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27115 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/slider.h

@@ -60,6 +60,9 @@ public:
     virtual void SetThumbLength(int lenPixels);
     virtual int GetThumbLength() const;
 
+    static wxVisualAttributes
+    GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
+    
     // implementation
     bool IsOwnGtkWindow( GdkWindow *window );
     void ApplyWidgetStyle();