--- a/mmsharing/mmshui/inc/musuisharingobserver.h	Fri Mar 12 15:42:21 2010 +0200
+++ b/mmsharing/mmshui/inc/musuisharingobserver.h	Mon Mar 15 12:40:08 2010 +0200
@@ -67,7 +67,7 @@
         */
         virtual void EnableMiddleSoftkeyL( TInt aResourceId ) = 0;   
 	    
-        virtual void ActivateVolumeControlL( TInt aValue ) = 0;  
+        virtual void ActivateVolumeControlL( TInt aValue, TBool aOnlyIfVisible = EFalse ) = 0;  
         
         virtual void HighlightSelectedToolbarItem( TInt aCommand ) = 0;