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**Tom Hanlin** · 30 Jan 2001, 01:42 PM

It may be possible to make your solution work. However, if you check
the Files and Add-on Vendors sections of this web site, you will find
many eval functions that work readily with PowerBASIC.

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Tom Hanlin
PowerBASIC Staff

**Chuck Suitor** · 30 Jan 2001, 03:31 PM

Originally posted by Kerry Francis:
I know this may sound strange, but I have a situation where I want to have a PowerBasic DLL call a function in a VB DLL.
The reason: I have an OCX control that I have purchased that has an excellant eval function (VSOCX from VIdeoSoft).
They do not offer it as a DLL, only as an OCX. So I have created a VB ActiveX DLL that contains this control on a form, with 1 function exposed so that I can call it.
But, when I run the VB EXE that calls the PowerBasic DLL that calls the VB/DLL it says it cannot load the PB/DLL.

If you want to call the VB DLL or the VB EXE you can pass the address of
a call back function (in a VB module), to the PB DLL. The address is obtained
via the function addressof. The PB DLL can call the VB function using CALL DWORD
and the address passed from VB.

Examples of using addressof are in MSDN, examples of CALL DWORD are in PB Help.

Hope this helps.

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**Paul Dwyer** · 31 Jan 2001, 04:40 AM

I just took a look but I couldn't find it.

It is here though, eval software. Some guy using PB wrote some stuff for an airline company or something.

grrrrrr it's frustrating but I can't remember what it was called, it's on this forum though and it's fast, I downloaded the DLL from his web page a few weeks ago

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Paul Dwyer
Network Engineer
Aussie in Tokyo
(Paul282 at VB-World)

**Kerry Francis** · 31 Jan 2001, 05:58 AM

Thanks Tom, Chuck and Paul,
I did look through the forums a few weeks ago and found an
eval function that someone had written, but it did not fill my
needs (numeric and string support, support for AND & OR). I did
look at the one eval library that was in the add-in section and
had similar results. I did come across a code library for
VB that I am now in the middle of converting to PB. Works really
well so my problem is solved (plus is alot more elegant that the
kludge I was starting).

Thanks!

Kerry

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**Peter Scheutz** · 31 Jan 2001, 06:58 AM

Originally posted by Kerry Francis:

I did come across a code library for VB that I am now in the middle of converting to PB. Works really
well

Do you have a URL?

--
Best Regards
Peter Scheutz

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**Kerry Francis** · 31 Jan 2001, 07:29 AM

Yes. It is at: http://www.aivosto.com/eval.html

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**Peter Scheutz** · 31 Jan 2001, 03:01 PM

Originally posted by Kerry Francis:
Yes. It is at: http://www.aivosto.com/eval.html

Thanks

--
Peter

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**Philippe Monteil** · 1 Feb 2001, 11:05 AM

Kerry,

I would suggest to take a look at the JA COM/PB 2.0 evaluation version
at: http://www.jazzagesoft.com. It contains PB samples showing
how to:

- call a VB DLL, in fact a COM inproc server, from within a
PB application. The VB DLL exposes a VB class directly
callable in PB.
- invoke the same VB class exposed by a VB EXE (out-of-proc
COM server) using exactly the same code as in the case
of the VB DLL, thanks to the power and magic <g> of COM.
- load a PB DLL from a VB Form and let it manipulate directly
one of the OCXs that form includes (an MS Calendar in this case)
- create OCXs in PB/DLL DDT or non DDT forms

Philippe Monteil
JAZZAge Software

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[This message has been edited by Philippe Monteil (edited February 01, 2001).]

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PB/DLL call a VB DLL?

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