ThunkProc - Syntax

This procedure provides pointer conversion for application-defined messages.

#define INCL_NONE
#include <os2.h>

HWND       hwnd;       /*  Window handle. */
USHORT     usmsg;      /*  Message identity. */
MPARAM     mpParam1;   /*  Message parameter 1. */
MPARAM     mpParam2;   /*  Message parameter 2. */
PFNWP      pWndProc;   /*  Window-procedure identifier. */
MRESULT    mresReply;  /*  Message-return data. */

mresReply = ThunkProc(hwnd, usmsg, mpParam1,
              mpParam2, pWndProc);