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

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

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