This function installs an application procedure into a specified hook chain.

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

HAB        hab;        /*  Anchor-block handle. */
HMQ        hmq;        /*  Queue identity. */
LONG       lHookType;  /*  Hook-chain type. */
PFN        pHookProc;  /*  Address of the application hook procedure. */
HMODULE    Module;     /*  Resource identity. */
BOOL       rc;         /*  Success indicator. */

rc = WinSetHook(hab, hmq, lHookType, pHookProc,
       Module);