Page 71 - Advantech WP-5530
P. 71

bRet = DeviceIoControl(hFile, ADV_STATUS_CTL_CODE, NULL, 0, &ReadByte, sizeof(ReadByte),
        &ulBytesReturned, NULL);
        if (bRet == FALSE || ulBytesReturned != 1)
        {
        AfxMessageBox("Failed to Read from cash drawer driver");
        CloseHandle(hFile);
        return;
        }
        else
        {
        AfxMessageBox(ReadByte ? “Drawer Open”: “Drawer Closed”);
        }
        CloseHandle(hFile);
        }









































































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