diff -u -r1.14 -r1.15
--- G4SensitiveDetector.hh	18 Dec 2006 22:49:01 -0000	1.14
+++ G4SensitiveDetector.hh	20 Dec 2006 00:13:10 -0000	1.15
@@ -83,8 +83,12 @@

 
   /**
    * Check whether the G4LogicalVolume can be readout by this detector. 

+   * Base function just returns if the volume was assigned to this detector.

    */

-  inline virtual bool isValidVolume(G4LogicalVolume* lv);

+  inline virtual bool isValidVolume(G4LogicalVolume* lv)
+  {
+    return lv != 0 && lv->GetSensitiveDetector() == this;
+  }

 
   /**
    * Return the hits collection name associated with this detector.

diff -u -r1.11 -r1.12
--- G4SensitiveDetector.cc	18 Dec 2006 21:21:20 -0000	1.11
+++ G4SensitiveDetector.cc	20 Dec 2006 00:13:10 -0000	1.12
@@ -1,4 +1,4 @@

-// $Header: /cvs/lcd/lcdd/src/G4SensitiveDetector.cc,v 1.11 2006/12/18 21:21:20 jeremy Exp $

+// $Header: /cvs/lcd/lcdd/src/G4SensitiveDetector.cc,v 1.12 2006/12/20 00:13:10 jeremy Exp $

 
 #include "G4SensitiveDetector.hh"
 

@@ -46,17 +46,6 @@

 G4SensitiveDetector::~G4SensitiveDetector()
 {}
 

-bool G4SensitiveDetector::isValidVolume(G4LogicalVolume* lv)
-{
-  bool valid = true;
-
-  if ( 0 == lv ) {
-    valid = false;
-  }
-
-  return valid;
-}
-

 void G4SensitiveDetector::Initialize(G4HCofThisEvent *)
 {
   // no-op