VC, Calling a VB ActiveX DLL

r..
#1 / 6

Calling a VB ActiveX DLL

How can I ( if I can ) make calls to a Visual Basic ActiveX DLL from
C++. Do I treat it as a COM object and get a reference to it though
IUNKNOWN?

I would be grateful for any help.

Thanks,
Joe

Sent via Deja.com http://www.*-*-*.com/
Before you buy.

Tue, 12 Nov 2002 03:00:00 GMT

Markus Geige
#2 / 6

Calling a VB ActiveX DLL

Hi Joe,
basically, your right. But the "base"-interface you want to use is IDispatch
instead of IUnknown.
You should also look at the #import-statement that is espacially suitable
for
ActiveX-Components. It produces wrapper - classes and uses smart pointers
to "simulate" VB coding style in VC. (Althought that does not free you from
knowing what you are doing when it comes to COM - it just makes things
easier)

--
Markus Geiger

#define THE_QUESTION ((bb) || (!bb)) -- W. Shakespeare

Quote:

> How can I ( if I can ) make calls to a Visual Basic ActiveX DLL from
> C++. Do I treat it as a COM object and get a reference to it though
> IUNKNOWN?

> I would be grateful for any help.

> Thanks,
> Joe

> Sent via Deja.com http://www.deja.com/
> Before you buy.

Tue, 12 Nov 2002 03:00:00 GMT

Serge
#3 / 6

Calling a VB ActiveX DLL

Quote:

> #define THE_QUESTION ((bb) || (!bb)) -- W. Shakespeare

This would be safer:

#define THE_QUESTION ((bb) || !(bb))

:)
Sergei

Thu, 14 Nov 2002 03:00:00 GMT

r..
#4 / 6

Calling a VB ActiveX DLL

I don't suppose you have an example lying around do you?

Thanks,
Joe

Quote:

> Hi Joe,
> basically, your right. But the "base"-interface you want to use is
IDispatch
> instead of IUnknown.
> You should also look at the #import-statement that is espacially
suitable
> for
> ActiveX-Components. It produces wrapper - classes and uses smart
pointers
> to "simulate" VB coding style in VC. (Althought that does not free
you from
> knowing what you are doing when it comes to COM - it just makes things
> easier)

> --
> Markus Geiger

> #define THE_QUESTION ((bb) || (!bb)) -- W. Shakespeare

> > How can I ( if I can ) make calls to a Visual Basic ActiveX DLL from
> > C++. Do I treat it as a COM object and get a reference to it though
> > IUNKNOWN?

> > I would be grateful for any help.

> > Thanks,
> > Joe

> > Sent via Deja.com http://www.deja.com/
> > Before you buy.

Sent via Deja.com http://www.deja.com/
Before you buy.

Sat, 16 Nov 2002 03:00:00 GMT

Mark Enrique
#5 / 6

Calling a VB ActiveX DLL

Well to have the best of both worlds here...

#define THE_QUESTION ((bb) || !(bb)) // W. Shakespeare

;)

Mark

Quote:

> > #define THE_QUESTION ((bb) || (!bb)) -- W. Shakespeare

> This would be safer:

> #define THE_QUESTION ((bb) || !(bb))

> :)
> Sergei

Sun, 17 Nov 2002 03:00:00 GMT

Serge
#6 / 6

Calling a VB ActiveX DLL

There's nothing here of two worlds. Just _my_ blunder.

Thank you.
Sergei

Quote:

> Well to have the best of both worlds here...

> #define THE_QUESTION ((bb) || !(bb)) // W. Shakespeare

> ;)

> Mark

> > > #define THE_QUESTION ((bb) || (!bb)) -- W. Shakespeare

> > This would be safer:

> > #define THE_QUESTION ((bb) || !(bb))

> > :)
> > Sergei

Mon, 18 Nov 2002 03:00:00 GMT