diff --git a/glbarcode/Barcode.h b/glbarcode/Barcode.h
index 6f0e63f..ebfa3f5 100644
--- a/glbarcode/Barcode.h
+++ b/glbarcode/Barcode.h
@@ -27,12 +27,6 @@
 #include "Renderer.h"
 
 
-/**
- * Barcode base for CAPI
- */
-extern "C" struct gbcBarcode {};
-
-
 namespace glbarcode
 {
 
@@ -47,7 +41,7 @@ namespace glbarcode
 	 * See Barcode1dBase or Barcode2dBase.
 	 *
 	 */
-	class Barcode : public gbcBarcode
+	class Barcode
 	{
 
 	protected:
diff --git a/glbarcode/Factory.h b/glbarcode/Factory.h
index 7a663d4..98a31b7 100644
--- a/glbarcode/Factory.h
+++ b/glbarcode/Factory.h
@@ -28,12 +28,6 @@
 #include "TypeIdList.h"
 
 
-/**
- * Barcode factory base for CAPI
- */
-extern "C" struct gbcFactory {};
-
-
 namespace glbarcode
 {
 	/**
@@ -41,7 +35,7 @@ namespace glbarcode
 	 *
 	 * Singleton Barcode factory class.
 	 */
-	class Factory : public gbcFactory
+	class Factory
 	{
 
 	public:
diff --git a/glbarcode/Renderer.h b/glbarcode/Renderer.h
index 47c37a7..1aeb9fa 100644
--- a/glbarcode/Renderer.h
+++ b/glbarcode/Renderer.h
@@ -27,12 +27,6 @@
 #include "DrawingPrimitives.h"
 
 
-/**
- * Renderer base for CAPI
- */
-extern "C" struct gbcRenderer {};
-
-
 namespace glbarcode
 {
 
@@ -44,7 +38,7 @@ namespace glbarcode
 	 *
 	 * Base class for all renderers.
 	 */
-	class Renderer : public gbcRenderer
+	class Renderer
 	{
 	public:
 		/**