🚀 go-pugleaf

Hi, everybody:
    I try to Acquire Images from Digital Camera through Windows Images
Acciqusition Automation Layer 2.0(
http://www.microsoft.com/downloads/details.aspx?FamilyID=a332a77a-01b...

) in C++ Builder 6.0.
   I've successfully get the primitive control of camera, like the
following code:
         WideString sComand = "{AF933CAC-ACAD-11D2-A093-00C04F72DC3C}";

         IDevicePtr s4 = wiadlg->ShowSelectDevice( CameraDeviceType,
true, false );
         IItem* itm = s4->ExecuteCommand( sCommand.c_bstr() );
         sCommand = "{B96B3CAE-0728-11D3-.....}";
         TVariant v = itm->Transfer( sCommand.c_bstr() );

         now, I got Image File data in v, how could i convert it to
WIA's ImageFile.


         In the example provided by microsoft in c#,  the code is just
like this:
               ImageFile file = itm->Transfer( ..... );
               file->SaveToFile("c:\\aaa.jpg");


          But if i write code like this in cb6, a compiling error will
erose and say that
ImageFile is a abstract class, and can not be instanced here.


         How could i solve this problem and save my image file to disk
?
Are there anybody who have successfully implemented WIA Automation
Layer in CB6? 
          Thanks for your help.