topic Re: iProperty Thumbnail to Image in Inventor Programming Forum

iProperty Thumbnail to Image

Anonymous — Thu, 11 Jun 2015 11:11:04 GMT

Hi,

i have some Problems to find a Solution to Convert the Thumbnail iProperty Value

  Dim thumbnail As IPictureDisp = thumbProp.Value

   Dim objImage As System.Drawing.Image
                objImage = Microsoft.VisualBasic.Compatibility.VB6.Support.IPictureDispToImage(thumbnail)

and all this without ...Support.IPictureDispToImage then this is !!Obsulet!!

so Wayne Brill have some Solution on this Side but this is Image ==> iPictureDisp

http://modthemachine.typepad.com/my_weblog/2012/02/bitmaps-without-vb6-icontoipicture.html

or this in Support Blog from Philippe Leefsma

http://adndevblog.typepad.com/manufacturing/2012/06/how-to-convert-iconbitmap-to-ipicturedisp-without-visualbasiccompatibilityvb6supporticontoipicture.html

and the solution from Microsoft or some other Peoples work rundomized most Time not!

Public Class PictureToImageConverter
    Inherits System.Windows.Forms.AxHost

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

    Public Shared Function Convert(ByVal iPicture As stdole.IPictureDisp) As System.Drawing.Image
        Return CType(System.Windows.Forms.AxHost.GetPictureFromIPicture(iPicture), System.Drawing.Image)
    End Function

End Class

pls Help thx

Mario

Re: iProperty Thumbnail to Image

manuel.lanthaler — Tue, 16 Jun 2015 06:39:11 GMT

Hi Mario,

im also using the last approach you posted and its working well for me.

Another possible solution could be to directly extract the Thumbnail from the file using the Windows API Code Pack library.

An example can be found here: http://stackoverflow.com/questions/1439719/c-sharp-get-thumbnail-from-file-via-windows-api

hope it helps

Re: iProperty Thumbnail to Image

Balaji_Ram — Tue, 16 Jun 2015 09:34:15 GMT

Hi Mario,

Here is a code snippet that my colleague Philippe Leefsma had recently used for converting the IPictureDisp to a System.Drawing.Image.

It uses the OleSavePictureFile to save a temporary WMF file which is then read into a System.Drawing.Image.

<DllImport("oleaut32.dll", EntryPoint:="OleSavePictureFile", ExactSpelling:=True, PreserveSig:=False, SetLastError:=True)> _
        Public Shared Sub OleSavePictureFile(Picture As stdole.IPictureDisp, <MarshalAs(UnmanagedType.BStr)> filename As String)
        End Sub

Dim oPD As Inventor.IPictureDisp
oPD = thumbProp.Value


'Check that an image was returned.  It's possible for a 
                'file to not have a thumbnail. 
                If oPD Is Nothing Then
                    MsgBox("The active document doesn't have a thumbnail.")
                    Return
                End If

                Dim fileName As String
                fileName = "D:\Temp\PartThumbnail.wmf"
                OleSavePictureFile(oPD, fileName)

                Dim img As System.Drawing.Image
                img = System.Drawing.Image.FromFile(fileName, True)

Regards,

Balaji

Re: iProperty Thumbnail to Image

Anonymous — Tue, 16 Jun 2015 10:49:51 GMT

Hi,

thanx for the Answers

is there another Solution to get a "Thumbnail" from Document to a ImageBox without IPictureDisp from iPropertys?

thx

Mario

Re: iProperty Thumbnail to Image

Balaji_Ram — Tue, 16 Jun 2015 11:06:06 GMT

Hi Mario,

In this blog post, Brian explains all the other possibilities.

But i think all of them deal with IPictureDisp.

http://modthemachine.typepad.com/my_weblog/2010/06/accessing-thumbnail-images.html

Is there a specific issue that you have with the code that i posted earlier ?

It saves the WMF to a folder and any image format can be created from it.

Regards,

Balaji

Re: iProperty Thumbnail to Image

Anonymous — Tue, 16 Jun 2015 13:27:55 GMT

Re: iProperty Thumbnail to Image

Anonymous — Tue, 16 Jun 2015 13:26:38 GMT

Works Perfect thx

Re: iProperty Thumbnail to Image

Anonymous — Wed, 15 Jul 2015 05:58:45 GMT

Yes, It works fine with great performance. (it takes only 2ms in my PC)

Re: iProperty Thumbnail to Image

martinhoos — Fri, 29 Apr 2016 05:54:47 GMT

Hello, would you so kind and post the hole code. I like to get the thumbnails as pic.

Thanks in advance

Regards

Martin