This example uses the WinReleaseHook call to release a hook that records user-input messages from the application queue.

#define INCL_WINHOOKS
#include <OS2.H>

void RecordHook(HAB hab, PQMSG pqmsg);

samp()
{
HAB hab;

WinSetHook(hab,
           HMQ_CURRENT,
           HK_JOURNALRECORD,
           (PFN)RecordHook,
           (HMODULE)0);     /* hook is into application queue. */

WinReleaseHook(hab,
               HMQ_CURRENT,
               HK_JOURNALRECORD,
               (PFN)RecordHook,
               (HMODULE)0); /* hook is into application queue, */

}

/*  This hook records user-input messages.  */
void RecordHook(HAB hab, PQMSG pqmsg)
{
   /*  ...   */
}