microsoft.public.dotnet.framework.interop

G Himangi

9/19/2007 4:08:00 AM

I dont think .Net can understand SAFEARRAYS.
In any case, it would be better to pass a normal array to the .Net method,
then pin it and copy its contents to a SAFEARRAY.

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- G Himangi, Sky Software http://www....
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"shiva" <shiva@discussions.microsoft.com> wrote in message
news:F8637968-9311-4F33-ACEF-0FA12DFDE8C2@microsoft.com...
> Hi,
>
> I have a VC++ COM DLL which is making calls to C#.net DLL. The C#.net DLL
> functions which are byte array expecting SAFEARRAY from VC++ DLL. VC++ DLL
> get called from my VB client where I need to pass this SAFEARRAY as
> VARIANT
> to VB.
> Could anyone help me how to get byte array from C# into VC++ and pass it
> in
> VARIANT to my VB client application.
>
> The current code I wrote seems not working can anyone help me in this -
>
> SAFEARRAY *psa;
> SAFEARRAYBOUND aDataItemBounds[1];
> aDataItemBounds[0].lLbound = 0;
> aDataItemBounds[0].cElements = nLength;
>
> psa = SafeArrayCreate( VT_ARRAY, 1, aDataItemBounds );
>
> // call to .net method
> pInet->DotNetMethod(&psa, &lResult);
>
> // copy into VARIANT to send to VB client
> SafeArrayCopyData( psa, pVariant->parray);
>
> Can anyone send me the code snippet for the above if it is wrongly coded.
>
> --
> Software Engineer