CopyFileFlags dwCopyFlags);

     ByVal dwCopyFlags As CopyFileFlags) As <MarshalAs(UnmanagedType.Bool)> Boolean

CopyProgressRoutine, CopyFileFlags

       CopyFileFlags dwCopyFlags);

    enum CopyFileFlags : uint

        CopyFileEx(oldFile, newFile, new CopyProgressRoutine(this.CopyProgressHandler), IntPtr.Zero, ref pbCancel, CopyFileFlags.COPY_FILE_RESTARTABLE);

        ByVal dwCopyFlags As CopyFileFlags) As <MarshalAs(UnmanagedType.Bool)> Boolean

    Private Enum CopyFileFlags As UInteger

        CopyFileEx(sourcePath, destPath, New CopyProgressRoutine(AddressOf CopyProgressHandler), IntPtr.Zero, pbCancel, CopyFileFlags.COPY_FILE_OPEN_SOURCE_FOR_WRITE)

        CopyFileEx(sourcePath, destPath, New CopyProgressRoutine(AddressOf CopyProgressHandler), IntPtr.Zero, pbCancel, CopyFileFlags.COPY_FILE_FAIL_IF_EXISTS)

   CopyFileFlags dwCopyFlags);

     ByVal dwCopyFlags As CopyFileFlags) As <MarshalAs(UnmanagedType.Bool)> Boolean

CopyProgressRoutine, CopyFileFlags

       CopyFileFlags dwCopyFlags);

    enum CopyFileFlags : uint

        CopyFileEx(oldFile, newFile, new CopyProgressRoutine(this.CopyProgressHandler), IntPtr.Zero, ref pbCancel, CopyFileFlags.COPY_FILE_RESTARTABLE);

        ByVal dwCopyFlags As CopyFileFlags) As <MarshalAs(UnmanagedType.Bool)> Boolean

    Private Enum CopyFileFlags As UInteger

        CopyFileEx(sourcePath, destPath, New CopyProgressRoutine(AddressOf CopyProgressHandler), IntPtr.Zero, pbCancel, CopyFileFlags.COPY_FILE_OPEN_SOURCE_FOR_WRITE)

        CopyFileEx(sourcePath, destPath, New CopyProgressRoutine(AddressOf CopyProgressHandler), IntPtr.Zero, pbCancel, CopyFileFlags.COPY_FILE_FAIL_IF_EXISTS)

enum CopyFileFlags : uint

      CopyFileFlags dwCopyFlags););