We are using COM dlls to be called

[rajeessh]

We are using COM dlls to be called from ASP to perform backend operations.
We pass the outoput to ASP throught [out] VARIANT *
so to pass the values we do
pVariant->BSTR = szRetVal.SysallocString()

The return value is being used by ASP to write results to clinet

How to free the allocated memory in this case.
will dllhost.exe takes care of that.
Pl advise

 

[Cagliostro]

BSTR y = szRetVal.SysallocString();
pVariant->BSTR = y;
.....
//free y
SysFreeString;

If the code above crashes then you should not care about memory leaks in this place and remove SysFreeString.

Ion Filipski