Index: sources/main.h
===================================================================
diff -u -rb798668f16ad0967ab97e96f5f9a2cdd821e899f -r016578b44e879b89bd42dda7763ed50e67d7e64c
--- sources/main.h	(.../main.h)	(revision b798668f16ad0967ab97e96f5f9a2cdd821e899f)
+++ sources/main.h	(.../main.h)	(revision 016578b44e879b89bd42dda7763ed50e67d7e64c)
@@ -49,6 +49,7 @@
 #define DEBUG_PROPERTY_CHANGED(vVARIABLE) //qDebug() << "#" << #vVARIABLE << v##vVARIABLE;
 //--------------------------------------------------------------------------------//
 #define PROPERTY_SLOT(          vTYPE ,    vVARIABLE )    \
+        protected :                                       \
         void vVARIABLE (  const vTYPE & v##vVARIABLE ) {  \
           static bool init = false;                       \
           if ( !init || _##vVARIABLE != v##vVARIABLE ) {  \
@@ -60,6 +61,7 @@
         }
 //--------------------------------------------------------------------------------//
 #define TRIGGER_SLOT(           vTYPE ,    vVARIABLE  )   \
+        protected:                                        \
         void  vVARIABLE ( const vTYPE & v##vVARIABLE  ) { \
             DEBUG_PROPERTY_CHANGED(vVARIABLE)             \
             _##vVARIABLE  = v##vVARIABLE;                 \