Hi James,

> Here is the function call and the compile error I am getting is "cannot convert parameter 1 from 'void *' to 'Cstring'

You need to create a CString object before you can pass it to the function. Something like this:

   class __declspec(dllimport) CSampleSelect oSampleSelect;

   CString s1( _HandToPtr(parm->p[0].val.ev_handle));
   CString s2( _HandToPtr(parm->p[1].val.ev_handle));
   CString s3( _HandToPtr(parm->p[2].val.ev_handle));
   nTest = oSampleSelect.MainSampleSelect(s1,s2,s3);

You might need to convert the string to Unicode before calling the FLL, though, using STRCONV().