diff --git a/include/wxex/appbar.h b/include/wxex/appbar.h
index fc21da8..b6ebd27 100644
--- a/include/wxex/appbar.h
+++ b/include/wxex/appbar.h
@@ -276,6 +276,12 @@ protected:
 };
 
 
+#ifdef __VISUALC__
+// non dll-interface class 'xxx' used as base for dll-interface class 'yyy'
+#pragma warning (push)
+#pragma warning (disable:4275)
+#endif
+
 ///
 /// Dockable application bar frame
 ///
@@ -333,6 +339,10 @@ public:
         const wxString& name = wxDialogNameStr);
 };
 
+#ifdef __VISUALC__
+#pragma warning(pop)
+#endif
+
 
 ///
 /// Returns if the application bar state represents docked state.
diff --git a/include/wxex/valhex.h b/include/wxex/valhex.h
index 5b06c80..8088b51 100644
--- a/include/wxex/valhex.h
+++ b/include/wxex/valhex.h
@@ -34,6 +34,13 @@ enum wxHexValidatorStyle
 };
 
 
+
+#ifdef __VISUALC__
+// non dll-interface class 'xxx' used as base for dll-interface class 'yyy'
+#pragma warning (push)
+#pragma warning (disable:4275)
+#endif
+
 ///
 /// Base class for hexadecimal validator
 ///
@@ -61,6 +68,10 @@ private:
     unsigned int m_width;    ///< Preferred width of the string - zero padding (<=1 disables padding)
 };
 
+#ifdef __VISUALC__
+#pragma warning(pop)
+#endif
+
 
 ///
 /// Validator for hexadecimal entries