Index: sources/gui/guicontroller.h
===================================================================
diff -u -rf36dd9c29f633b54bf7f0232093ecaefa5452ca8 -r4c53c7c62df7562a6c0915f0c5af7ea0ed884ca3
--- sources/gui/guicontroller.h	(.../guicontroller.h)	(revision f36dd9c29f633b54bf7f0232093ecaefa5452ca8)
+++ sources/gui/guicontroller.h	(.../guicontroller.h)	(revision 4c53c7c62df7562a6c0915f0c5af7ea0ed884ca3)
@@ -37,17 +37,17 @@
 private:
     void initConnections();
 
-    bool    handleTransmit(GuiActionType vAction, GuiActionData vData);
+    bool    handleTransmit(GuiActionType vAction, const QByteArray &vData);
 
 public slots:
-    void  doActionTransmit(GuiActionType vAction, GuiActionData vData); // UI => HD/DG
+    void  doActionTransmit(GuiActionType vAction, const QByteArray &vData); // UI => HD/DG
 
 private slots: // Should be private for thread safety and is connected internally.
-    void  onActionReceive (GuiActionType vAction, GuiActionData vData); // UI <= HD/DG
+    void  onActionReceive (GuiActionType vAction,     GuiActionData vData); // UI <= HD/DG
 
 signals:
-    void didActionReceive (GuiActionType vAction, GuiActionData vData); // UI <= HD/DG
-    void didActionTransmit(GuiActionType vAction, GuiActionData vData); // UI => HD/DG
+    void didActionReceive (GuiActionType vAction,     GuiActionData vData); // UI <= HD/DG
+    void didActionTransmit(GuiActionType vAction, const QByteArray &vData); // UI => HD/DG
 };
 
 }