On Windows, C++ plug-ins must export their callback functions from the plug-in DLL. To export a function from a DLL, add the XSIPLUGINCALLBACK macro to the function definition:
XSIPLUGINCALLBACK CStatus MyCommand_Init( CRef& in_ctxt )
{
//...
}XSIPLUGINCALLBACK is defined in sicppsdk.h. On Windows, this macro resolves to:
extern "C" __declspec(dllexport)
and on Linux to:
extern "C"
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