RegisterUserHook - Syntax

This hook is called whenever a user message or data type is registered.

#define INCL_WINHOOKS /* Or use INCL_WIN, INCL_PM, */
#include <os2.h>

HAB        hab;          /*  The application anchor block. */
ULONG      cUshort;      /*  Number of data type codes. */
PUSHORT    arRMP;        /*  Array of data type codes. */
PBOOL      fRegistered;  /*  Flag indicating that a message or data type was registered. */
BOOL       rc;           /*  Success indicator. */

rc = RegisterUserHook(hab, cUshort, arRMP,
       fRegistered);