wpQueryAssociationFilter - Syntax

This instance method is called to determine which file title filters are used to associate data file objects to this program object.

#define INCL_WINWORKPLACE
#include <os2.h>

WPProgramFile     *somSelf;  /*  Pointer to the object on which the method is being invoked. */
PSZ                rc;       /*  Success indicator. */

rc = _wpQueryAssociationFilter(somSelf);