Product Documentation

FairCom ISAM for C

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Called when FairCom DB loads a filter callback DLL. This function initializes resources that are used by the filter callback DLL.


NINT LoadFilter(pTEXT libname, ppVOID plibhandle);


  • libname is the filter callback DLL name that was passed to SetDataFilter().
  • plibhandle is a pointer to an application-defined library handle.


This function is defined in the ctuserx.c module used to build a filter callback function.

LoadFilter() can allocate memory for use by the filter callback function and can return its address in this parameter.

See also

ctfiltercbAddFilter(), EvaluateFilter(), ctfiltercbRemoveFilter(), UnloadFilter(), SetDataFilter()