Index: sources/main.h
===================================================================
diff -u -rbb8f39a014644c70b832dd2a784f62fa9f6b6106 -r296e0e140bfeb193a9f571873afa6934143b1075
--- sources/main.h	(.../main.h)	(revision bb8f39a014644c70b832dd2a784f62fa9f6b6106)
+++ sources/main.h	(.../main.h)	(revision 296e0e140bfeb193a9f571873afa6934143b1075)
@@ -39,9 +39,31 @@
     static vCLASS &I() {                            \
         static vCLASS _instance;                    \
         return        _instance;                    \
-    }
+    }                                               \
 
+
 extern int        gFakeInterval;
 extern QByteArray gFakeData;
 extern const char*gFakeData_default;
 extern bool       gSendEmptyKeepAwake;
+
+#define PROPERTY(vTYPE , vVARIABLE , vDEFVALUE)                 \
+      Q_PROPERTY(vTYPE   vVARIABLE                              \
+                  READ   vVARIABLE                              \
+                  WRITE  vVARIABLE                              \
+                  NOTIFY vVARIABLE##Changed)                    \
+      Q_SIGNALS:                                                \
+        void          vVARIABLE##Changed                        \
+                               ( const vTYPE & v##vVARIABLE );  \
+    private:                                                    \
+        vTYPE    _##vVARIABLE  =       vDEFVALUE;               \
+        vTYPE       vVARIABLE () const {                        \
+          return _##vVARIABLE ;                                 \
+        }                                                       \
+        void        vVARIABLE (  const vTYPE & v##vVARIABLE ) { \
+          if (   _##vVARIABLE != v##vVARIABLE   ) {             \
+                 _##vVARIABLE  = v##vVARIABLE;                  \
+                 emit vVARIABLE##Changed( _##vVARIABLE );       \
+          }                                                     \
+        }                                                       \
+