Message structure.

typedef struct _QMSG {
  HWND       hwnd;      /*  Window handle. */
  ULONG      msg;       /*  Message identity. */
  MPARAM     mp1;       /*  Parameter 1. */
  MPARAM     mp2;       /*  Parameter 2. */
  ULONG      time;      /*  Message time. */
  POINTL     ptl;       /*  Pointer position when message was generated. */
  ULONG      reserved;  /*  Reserved. */
} QMSG;

typedef   QMSG   * PQMSG ;