How to convert IPictureDisp to System.Drawing.Image

Question

From a COM library (Microsoft Office Document Imaging aka MODI) I receive an image as an IPictureDisp which I would like to convert to a System.Drawing.Image object.

Wh

Answer 1

Microsoft.VisualBasic.Compatibility.VB6.Support.IPictureDispToImage is not guaranteed to always be included in future updates. So... taking the example from http://support.microsoft.com/kb/555417 I came up with the following

Example

Public Class ImageToPictureDispConverter

Inherits System.Windows.Forms.AxHost

Public Sub New()
    MyBase.New("{63109182-966B-4e3c-A8B2-8BC4A88D221C}")
End Sub

Public Function GetImageFromIPictureDisp(ByVal objImage As stdole.IPictureDisp) As System.Drawing.Image
    Dim objPicture As System.Drawing.Image
    objPicture = CType(MyBase.GetPictureFromIPicture(objImage), System.Drawing.Image)

    Return objPicture
End Function

End Class

I see in your constructor that you pass an empty string. I ended up having to pass the following string "{63109182-966B-4e3c-A8B2-8BC4A88D221C}". If I passed an empty string I received a system.formatexception error. It looks like you have everything I have except for this string in your call to base.

Hope this helps.