Index: trunk/MagicSoft/Mars/mgui/MCamEvent.h
===================================================================
--- trunk/MagicSoft/Mars/mgui/MCamEvent.h	(revision 2281)
+++ trunk/MagicSoft/Mars/mgui/MCamEvent.h	(revision 2411)
@@ -12,5 +12,5 @@
 public:
     virtual Bool_t GetPixelContent(Double_t &val, Int_t idx, const MGeomCam &cam, Int_t type=0) const = 0;
-    virtual void   DrawPixelContent(Int_t num) const = 0;
+    virtual void   DrawPixelContent(Int_t num, TVirtualPad *pad=NULL) const = 0;
 
     ClassDef(MCamEvent, 0) // A camera event