>I'm trying to call a function in a DLL provided by a third party using VFP5. The sample code provided includes implementations for C++, VB and Delphi but none for VFP. The sample code for some of the function calls reference structures (instead of Short, Long, String) as the parameter type. Knowing nothing about structures, I'm stuck.
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>Anybody ever handled something like this before ?

All the time. Typically, strings are used to construct structures; things get a bit more complicated where the structure contains embedded pointers to other things. If you post the typedef for the structure in C and the C prototype for the function, we might be able to help.