When I start a drag and drop using a right click in WPF it will fire the drop on any target with out waiting for the right mouse button to come up.
                +1 
                A: 
                
                
              
            To drag, the mouse needs to be captured, which can only be achieved when the left mouse button is down. See http://msdn.microsoft.com/en-us/library/system.windows.uielement.capturemouse(VS.95).aspx (for Silverlight, but I think it's similar).
                  Bruno Martinez
                   2009-06-30 01:12:56