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Strange results in COM DLL
Message
Information générale
Forum:
Visual FoxPro
Catégorie:
COM/DCOM et OLE Automation
Divers
Thread ID:
00467419
Message ID:
00468087
Vues:
21
>As I've discovered it's not the run-time afterall, it's fact that it's a the DLL (doesn't matter whether it's single or multi-threaded, tested both). Further, it's seems that the source of the data is part of the problem.
>
>Here's what I did:
>
>1. Created two small tables to hold the necessary data.
>2. Created a form will functions and properties to make the necessary calculations. There were two comparison functions. One with a straight evaluation of the two values returned. The other used VAL(TRANSFORM()) on the return values prior to the comparison.
>3. Tested the functions, and they worked fine
>4. Created a DLL with the same functions (copied and pasted from the form) and properties.
>5. Tested against the DLL. Similarly, the comparison without the VAL(TRANSFORM()) returned false. The one with returned true.
>6. Add a method to initialize the DLLs properties with literals.
>7. Repeated the test. Both functions returned true.
>
>So...

Interesting. So what would make a DLL perform math functions differently than a regular function call?
Fred
Microsoft Visual FoxPro MVP

foxcentral.net
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