public delegate void DIFLOGCALLBACK(DIFXAPI_LOG EventType, Int32 ErrorCode, [MarshalAs(UnmanagedType.LPTStr)] string EventDescription, IntPtr CallbackContext);

Public Delegate Sub DIFLOGCALLBACK(ByVal EventType As DIFXAPI_LOG, ByVal ErrorCode As Int32, <MarshalAs(UnmanagedType.LPTStr)> ByVal EventDescription As String, ByVal CallbackContext As IntPtr)

public static void DIFLogCallbackFunc(DIFXAPI_LOG EventType, Int32 ErrorCode, string EventDescription, IntPtr CallbackContext)

Public Sub DIFLogCallbackFunc(ByVal EventType As DIFXAPI_LOG, ByVal ErrorCode As Int32, ByVal EventDescription As String, ByVal CallbackContext As IntPtr)

public static extern void SetDifxLogCallback(DIFLOGCALLBACK LogCallback, IntPtr CallbackContext);

Public Declare Auto Function SetDifxLogCallback Lib "DIFxAPI.dll" (ByVal LogCallback As DIFLOGCALLBACK, ByVal CallbackContext As IntPtr) As Int32

DIFLOGCALLBACK

SetDifxLogCallback(new DIFLOGCALLBACK(DIFLogCallbackFunc), IntPtr.Zero)

SetDifxLogCallback(New DIFLOGCALLBACK(AddressOf DIFLogCallbackFunc), IntPtr.Zero)