Make sure you remove BSTRs from UDTs that are
copied into a safe arrays after using AddElement().

i.e.

     Create 'UdtTemplate' variable
    Add data to UdtTemplate
    Add BSTR to UdtTemplate
    Copy UdtTemplate to Safe Array using AddElement()
    Remove BSTR from UdtTemplate
    UdtTemplate goes out of scope at end of function like a normal structure

My UDTs only contain numbers and BTSRs, and VB
appears to handle safearrays containing them them
without a problem.

Glenn :)

> -----Original Message-----
> From: Distributed COM-Based Code [mailto:DCOMDISCUSS.MICROSOFT.COM]On
> Behalf Of arun
> Sent: 30 July 2002 14:55
> To: DCOMDISCUSS.MICROSOFT.COM
> Subject: variantclear and [in,out] parameters
>
>
> Hi
>
> I would like to hear a definite answer from someone
> regarding variantclear
>
> I have many in,out parameters in many out of process
> calls. Most of them are variants that recieve or give
> SAFEARRAYS of multiple types (including UDT's)
> I use a simeple call to Variantclear() to free them
>
> Is it ok to assume that any kind of complex data
> except the ones mentioned in the documentation
> (VT_DISPATCH|VT_BYREF and so on)
> would be freed automatically ? Or should i be looking
> at some kindof CoTaskmemFree etc ?
>
> I also pass pointer of local variables(non variants) at times
> which gets the value correctly and goes out of scope
> in the normal way without any errors and i get the value placed
> in them too. Should they be replaced by ComTaskAlloce'd
> pointers to memory ?
>
>
> Any help would be appreciated as it will allow me to
> look at other areas of my application without worrying
> about com memory allocations
>
> arun
>
>
>
>
>
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