COM Expertise needed: COM Callbacks

[Nierjerson via Digitalmars-d-learn]

On Wednesday, 26 April 2017 at 15:30:37 UTC, John Chapman wrote:
> On Tuesday, 25 April 2017 at 18:39:56 UTC, Nierjerson wrote:
>> [...]
>
> When you use DISPATCH_PROPERTYPUT you need to set cNamedArgs 
> and rgdispidNamedArgs like so:
>
>   int dispidNamed = DISPID_PROPERTYPUT;
>   params.cNamedArgs = 1;
>   params.rgdispidNamedArgs = &dispidNamed;
>
> You should also call AddRef on any COM objects you add to your 
> paramVars array.


Did you try this? I tried and same issue. Are you sure the above 
is required? I'm not using any "named" args so not sure why it 
should matter?