public delegate int CvErrorCallback(
	CvStatus status,
	string funcName,
	string errMsg,
	string fileName,
	int line,
	IntPtr userdata
)

Public Delegate Function CvErrorCallback ( 
	status As CvStatus,
	funcName As String,
	errMsg As String,
	fileName As String,
	line As Integer,
	userdata As IntPtr
) As Integer

public delegate int CvErrorCallback(
	CvStatus status, 
	String^ funcName, 
	String^ errMsg, 
	String^ fileName, 
	int line, 
	IntPtr userdata
)

type CvErrorCallback = 
    delegate of 
        status : CvStatus * 
        funcName : string * 
        errMsg : string * 
        fileName : string * 
        line : int * 
        userdata : IntPtr -> int