C# Definition:

private delegate CopyProgressResult CopyProgressRoutine(
    long TotalFileSize,
    long TotalBytesTransferred,
    long StreamSize,
    long StreamBytesTransferred,
    uint dwStreamNumber,
    CopyProgressCallbackReason dwCallbackReason,
    IntPtr hSourceFile,
    IntPtr hDestinationFile,
    IntPtr lpData);

VB.NET Definition:

Private Delegate Function CopyProgressRoutine(ByVal TotalFileSize As Long, ByVal TotalBytesTransferred As Long, ByVal StreamSize As Long, _
  ByVal StreamBytesTransferred As Long, ByVal dwStreamNumber As UInteger, ByVal dwCallbackReason As CopyProgressCallbackReason, _
  ByVal hSourceFile As IntPtr, ByVal hDestinationFile As IntPtr, ByVal lpData As IntPtr) As CopyProgressResult

User-Defined Types:

CopyProgressResult, CopyProgressCallbackReason

Notes:

None.