Casio IT-2000W Technical Reference Manual page 222

Setting event of reception completion
When a barcode data is received completely, specified message can be sent as user event to the
specified handle.
This library will send a message to specified window handle using the SendMessage API. Specified
hWnd, uMsg, wParam, lParam are used as parameter for the SendMessage API.
SYNTAX
#include "obrlib.h"
void FAR PASCAL _export OBR_SetUserEvent(HWND hWnd, UINT uMsg, WORD
INPUT
hWnd
uMsg
wParam = WORD parameter of user event
lParam = LONG parameter of user event
OUTPUT
None
= Destination window handle for message to be sent.
= User event message
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wParam,LONGlParam);