Load GUI from XML

VBOManager.hh

@@ -8,10 +8,10 @@
 
 #include <glbinding/gl/types.h>
 
-class VBOManager {
+#include "Singleton.hh"
+
+class VBOManager : public Singleton<VBOManager> {
 public:
-  static VBOManager& getInstance();
-  
   ~VBOManager();
 
   VBOManager(VBOManager const& copy) = delete;
@@ -19,9 +19,7 @@ public:
   
 private:
   VBOManager();
-
-  static void init();
-  static std::unique_ptr<VBOManager> instance;
+  friend class Singleton<VBOManager>;
   
   class VBO;