DLL problem

[Bern Ertl]

I'm trying to wrap a bunch of functions from my app into a
DLL. I can compile my DLL and my main app (sans original
functions which were ported to the DLL). I've got a function
in my DLL declared as:

SUB MyFormat( BYVAL StringPtr AS BYTE PTR, BYVAL Value&) EXPORT

In my main app, I've got a DECLARE for it like so:

DECLARE SUB MyFormat LIB "ipsl1.DLL" ALIAS "MyFormat" ( BYVAL StringPtr AS BYTE PTR, BYVAL Value&)

When I try to execute the main app, I get two error messages.
The first is "A device attached to the system is not functioning."
The second is "<YourApp> is linked to missing export <DLL>:MyFormat."
<> = paraphrased

What am I doing wrong?



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Bernard Ertl

[Don Dickinson]

In you dll try this instead ...

SUB MyFormat Alias "MyFormat" ( BYVAL StringPtr AS BYTE PTR, BYVAL Value&) EXPORT

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dickinson.basicguru.com

[Wayne Diamond]

The first is "A device attached to the system is not functioning."
No idea sorry - make sure everything is plugged in <grin>
The second is "<YourApp> is linked to missing export <DLL>:MyFormat."
Shouldnt your declare for "MyFormat" be "MYFORMAT"? (as DLL function names are case sensitive, and PB compilers always compile exported functions to uppercase for some reason)
eg. DECLARE SUB MYFORMAT LIB "ipsl1.DLL" ALIAS "MYFORMAT" ( BYVAL StringPtr AS BYTE PTR, BYVAL Value&)

Best regards,
Wayne


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[Don Dickinson]

Actually, if you change the function name to be all upper-case in the dll, you won't need the alias - that's the other (less preferred in my opinion) way to do it.
--Don

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dickinson.basicguru.com

[Bern Ertl]

Thanks Don,

That appears to have solved the problem.



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Bernard Ertl