Please help! ActiveX Methods Problem

[Dave Lora]

I have an ActiveX object method that takes a pointer input/output. I need
to call the method from a LabVIEW VI, but I can't figure out how to send
or receive a pointer! Is this possible?

[Greg_McKaskle2]

> I have an ActiveX object method that takes a pointer input/output. I need
> to call the method from a LabVIEW VI, but I can't figure out how to send
> or receive a pointer! Is this possible?

If you pass a LV value into a server interface
that takes a pointer, then it will automatically
pass a pointer and pull the value back for you.
In other words, I think it transparently does
what you need.

Interface pointers or references are different.
Just wire them to a property or invoke node.

Greg McKaskle

[Lawrence Pado]

"Dave Lora" wrote:
>>I have an ActiveX object method that takes a pointer input/output. I need>to
call the method from a LabVIEW VI, but I can't figure out how to send>or
receive a pointer! Is this possible?

[Lawrence Pado]

I have the exact same problem but I didn�t understand the answer given on
the newsgroup. Did you ever get this to work? I need to pass a four element
1 dimensional array but I just get a broken link when I wire it up

Thanks,

Larry

[judith m recca]

In article <3818ab66@newsgroups.ni.com>,
"Dave Lora" wrote:

>
>I have an ActiveX object method that takes a pointer input/output. I need
>to call the method from a LabVIEW VI, but I can't figure out how to send
>or receive a pointer! Is this possible?

This may help in reading a pointer into LabVIEW: I had a situation where I was using the
"Sheet.Add" method in MS Excel, and this method returns a pointer (purple wire) to a worksheet
object. So to be able to use this pointer, I had to convert it to a Labview refnum (green wire)
using the "Convert to G data" function of the ActiveX palette. But what should I wire to the type
input of the "Convert to G data" function? What worked was this: put an automation refnum on the
front panel, right-cli
ck and browse until you find the appropriate activeX object type def (in
this case Excel._Worksheet), then use this terminal as the type input to the "convert to G data"
function. Of course this only works if the browse turns up the object type you are looking for.
As for passing pointers out of LabVIEW (i.e. pointer inputs into a LabVIEW activeX method
function), I'm not sure - I thought LabVIEW converted any of its built-in types to a Variant data
type.
Vinny.R.