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Stumped by a DLL
Message
 
To
23/09/2005 00:58:09
General information
Forum:
Visual FoxPro
Category:
COM/DCOM and OLE Automation
Environment versions
Visual FoxPro:
VFP 9
OS:
Windows XP SP2
Database:
Visual FoxPro
Miscellaneous
Thread ID:
01052286
Message ID:
01052333
Views:
9
>It's not a COM question, it's a DLL question.
>
>I have a DLL that's defined as:
>
>DECLARE integer foo IN 'foo.dll" double @value1, double @value2
>
>Notice that the parameters are by reference, so they must exist from the calling code.
>
>So I call it with:
>
>value1=0
>value2=0
>foo(@value1,@value2)
>
>The result is that value1 and value2 come back with a strange value such as 2.63E-308.
>
>I have no idea what's happening. I haven't done any DLL work in a while so I'm clueless. Any ideas? It's times like this I really miss Ed Rauh.

Gonz,

What values are you expecting to see?
George

Ubi caritas et amor, deus ibi est
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