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

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

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

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

public static extern Int32 DIFXAPISetLogCallback(DIFXAPILOGCALLBACK LogCallback, IntPtr CallbackContext);

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

DIFXAPILOGCALLBACK

DIFXAPISetLogCallback(new DIFXAPILOGCALLBACK(DIFxAPILogCallbackFunc), IntPtr.Zero)

DIFXAPISetLogCallback(New DIFXAPILOGCALLBACK(AddressOf DIFxAPILogCallbackFunc), IntPtr.Zero)