Convert an Image - vb.net

Question

I Tried to convert this code into vb.net and add a little code to make a file... but the file's resolution became crap and i cant seem to insert it into the Crystal report, Did i do something wrong while converting it into vb.net? thanks in advance :)
Here is the original link Convert an image into WMF with .NET?
<Flags>
Private Enum EmfToWmfBitsFlags
EmfToWmfBitsFlagsDefault = &H0
EmfToWmfBitsFlagsEmbedEmf = &H1
EmfToWmfBitsFlagsIncludePlaceable = &H2
EmfToWmfBitsFlagsNoXORClip = &H4
End Enum
Private Shared MM_ISOTROPIC As Integer = 7
Private Shared MM_ANISOTROPIC As Integer = 8
<DllImport("gdiplus.dll")>
Private Shared Function GdipEmfToWmfBits(_hEmf As IntPtr, _bufferSize As UInteger, _buffer As Byte(), _mappingMode As Integer, _flags As EmfToWmfBitsFlags) As UInteger
End Function
<DllImport("gdi32.dll")>
Private Shared Function SetMetaFileBitsEx(_bufferSize As UInteger, _buffer As Byte()) As IntPtr
End Function
<DllImport("gdi32.dll")>
Private Shared Function CopyMetaFile(hWmf As IntPtr, filename As String) As IntPtr
End Function
<DllImport("gdi32.dll")>
Private Shared Function DeleteMetaFile(hWmf As IntPtr) As Boolean
End Function
<DllImport("gdi32.dll")>
Private Shared Function DeleteEnhMetaFile(hEmf As IntPtr) As Boolean
End Function
Private Function MakeMetafileStream(image As Bitmap) As Byte()
Dim metafile As Metafile = Nothing
Using g As Graphics = Graphics.FromImage(image)
Dim hDC As IntPtr = g.GetHdc()
metafile = New Metafile(hDC, EmfType.EmfOnly)
g.ReleaseHdc(hDC)
End Using
Using g As Graphics = Graphics.FromImage(metafile)
g.DrawImage(image, 0, 0)
End Using
Dim _hEmf As IntPtr = metafile.GetHenhmetafile()
Dim _bufferSize As UInteger = GdipEmfToWmfBits(_hEmf, 0, Nothing, MM_ANISOTROPIC, EmfToWmfBitsFlags.EmfToWmfBitsFlagsDefault)
Dim _buffer As Byte() = New Byte(_bufferSize - 1) {}
GdipEmfToWmfBits(_hEmf, _bufferSize, _buffer, MM_ANISOTROPIC, EmfToWmfBitsFlags.EmfToWmfBitsFlagsDefault)
Dim hmf As IntPtr = SetMetaFileBitsEx(_bufferSize, _buffer)
Dim tempfile As String = Path.GetTempFileName()
CopyMetaFile(hmf, tempfile)
DeleteMetaFile(hmf)
DeleteEnhMetaFile(_hEmf)
Dim stream = New MemoryStream()
Dim data As Byte() = File.ReadAllBytes(tempfile)
Return data
End Function
Private Sub Convert()
Dim src As New Bitmap("C:\Users\Sample\Desktop\Logos\LogoTransparent\Transparentlogo.png")
Dim Msteam As Byte() = MakeMetafileStream(src)
Dim newF As String = "C:\Users\Alvin Rodriguez\Desktop\Logos\new logo transparent\Transparentlogo.wmf"
System.IO.File.WriteAllBytes(newF, Msteam)
Msteam = Nothing
End Sub

Answer 1

Some interface are to be modifed:
Declare Function CopyEnhMetaFile Lib "gdi32" Alias "CopyEnhMetaFileA" (ByVal hemfSrc As IntPtr, ByVal lpszFile As String) As IntPtr
Declare Function DeleteEnhMetaFile Lib "gdi32" (ByVal hemf As IntPtr) As Integer
Private Declare Function GdipEmfToWmfBits Lib "gdiplus.dll" (ByVal hEmf As IntPtr, ByVal bufferSize As UInteger, ByVal buffer() As Byte, ByVal mappingMode As Integer, ByVal flags As EmfToWmfBitsFlags) As UInteger