>To make the long story short, I need help with passing in the value for
>"const void* pvData". Following is my function prototype

"Mattias Sjögren" <mattias.dont.want.spam@mvps.org> wrote in message
news:Ocip92jgHHA.392@TK2MSFTNGP06.phx.gbl...
> >To make the long story short, I need help with passing in the value for
>>"const void* pvData". Following is my function prototype
>
> Looks like you forgot to include it.
>
> Generally you can use whatever type is appropriate for pvData.
>
>
> Mattias
>
> --
> Mattias Sjögren [C# MVP] mattias @ mvps.org
> http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
> Please reply only to the newsgroup.

"Walter Wang [MSFT]" <wawang@online.microsoft.com> wrote in message
news:2TEaKelgHHA.6068@TK2MSFTNGHUB02.phx.gbl...
> Hi Sajan,
>
> According to the documentation of the API JetSetColumn, pvData is an input
> pointer to an allocated memory.
>
> You could use Marshal.AllocHGlobal to allocate a block of memory and use
> Marshal.Write* members to write data into the memory block.
>
> After calling the API, don't forget to use Marshal.FreeHGlobal to free the
> memory.
>
> #Marshal Members (System.Runtime.InteropServices)
> http://msdn2.microsoft.com/en-us/library/system.runtime.interopservices.mars
> hal_members.aspx
>
>
> Please feel free to reply here is there's anything unclear.
>
>
> Sincerely,
> Walter Wang (wawang@online.microsoft.com, remove 'online.')
> Microsoft Online Community Support
>
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