GdPicture Imaging SDK - Live Support Center

[Zorbania]

I'm trying to use Gdimage control to manipulate a picture. and view the image outside the GDViewer.. do to live camera video. Transparency seems to only remove the RGB values not the ALPHA values into any object outisde the gdviewer.. is there a solution for this.. or a way to get the GdImage with transpency to a VB Image object.

Dim vMasterImage as image
GdImage.CreateImageFromFile(vPath)
GdImage.ConvertTo32BppARGB()
GdImage.SetTransparencyColor(GdPicturePro5.Colors.White)
GdImage.SetTransparency(-50)
vMaterImage=GdImage.GetPicture

Please HELP!!

[Loïc]

Hi,

You are loosing the Alpha channel here:

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vMaterImage=GdImage.GetPicture

The GetPicture() method returns an OLE Picture object wich don't support Alpha Channel.

You can create a DotNet image object from a GdPicture imaging object like this:

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Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
   Dim Imaging1 As New GdPicturePro5.cImaging
   Imaging1.CreateImageFromFile("c:\test.jpg")
   Dim GdipImage As IntPtr = New IntPtr(Imaging1.GetGdiplusImage)
   Dim MyImage As Image = GetDotNetBitmap(GdipImage)
End Sub

Public Function GetDotNetBitmap(ByVal GdipImage As IntPtr) As Bitmap
        Dim imageType As Type = GetType(System.Drawing.Bitmap)

        Return DirectCast(imageType.InvokeMember("FromGDIplus", BindingFlags.NonPublic Or BindingFlags.Static Or BindingFlags.InvokeMethod, _
        Nothing, Nothing, New Object() {GdipImage}), Bitmap)
End Function

Note: To be able to run this code you have to import System.Reflection within your module.

Add:

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Imports System.Reflection

Best regards,

Loïc