> In the old Win32 API in wingdi.h, all of the WMF and EMF record
> structures are defined.  Thats fine for normal EMF/WMF, but newer
> applications like Visio 2002 now export EMFPlusDual files.  I've
> checked all of the GDI+ headers defined in
> vc7\PlatformSDK\Include\prerelease (and done a global search for a few
> of the EMFPlus record enumeration values), and the EMFPlus records are
> not defined anywhere.  I need to be able to search text records for
> custom tags we've defined (ie <DataString('CustomerName')>) and
> replace the strings with actual data.  We can do it on all of the
> normal EMF/WMF records, plus we've figured out enough of the
> DrawDriverString record to write in a string of the same length.  We'd
> really prefer, however, to have the real EMFPlus data structures.
> Anyone know where I can get them?

> On a related problem, does anyone know why the PlayRecordCallback
> parameter to the EnumerateMetafile callback is always null?
> Microsoft's own sample code for the Graphics.EnumerateMetafileProc
> Delegate uses the PlayRecord to draw each metafile record; the sample
> doesn't work, however.  I presume this is related to the callbackData
> parameter to Graphics.EnumerateMetafileProc; the documentation says to
> pass in IntPtr.Zero, but I suspect that it should really recieve a
> callback pointer.  However, the PlayRecordCallback delegate doesn't
> match Metafile.PlayRecord's signature (byte [] data instead of IntPtr
> data).  I'd really prefer the IntPtr form, since then I wouldn't have
> to Marshal.Copy the data from the IntPtr data from the
> EnumerateMetafileProc delegate into a byte [] array.