public delegate float CvDistanceFunction(
	IntPtr f1,
	IntPtr f2,
	IntPtr userParams
)

Public Delegate Function CvDistanceFunction ( _
	f1 As IntPtr, _
	f2 As IntPtr, _
	userParams As IntPtr _
) As Single

public delegate float CvDistanceFunction(
	IntPtr f1, 
	IntPtr f2, 
	IntPtr userParams
)