Need Help with determining what object is selected

I'm working on an editor script. I need to get a reference to an object in the scene view when the user clicks on it. I have tried using Selection,activeObject to test for the object in question, but that doesn't work on children. If a child is clicked, it only returns the parent.

SO, I'm trying the hacky way of raycasting using the following code:

Code (csharp):

1. function OnSceneGUI()
2.     {
3.         if(Event.current.type == EventType.mouseDown)
4.         {
5.             var obj : GameObject;
6.             var ray = Camera.mainCamera.ScreenPointToRay(Input.mousePosition);
7.             var hit : RaycastHit;
8.             if (Physics.Raycast (ray, hit, Mathf.Infinity))
9.             {  
10.                 Debug.Log(hit.collider);
11.             }
12.         }
13.     }

This doesn't work because it is using the main camera, and that isn't the camera used in the scene view. I can't find much documentation on working with the scene view. Is there a scene view camera I can use to make that raycast work, or is there some way to use the Selection class to pick out a child object that is selected?