NCR RealPOS 70, Руководство пользователя

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12-16 Chapter 12: Cash Drawer Interface
// DRAWER_OPENED
// DRAWER_CLOSED
//
DWORD GetDrawerStatus()
{
int Result;
CString ResString;
DWORD bMask;
Result = DRAWER_INVALID;
ResString = _T("INVALID");
if ( m_bIFOpened && ( m_pCashDrawer->m_bCapStatus) ) // Opened and Drawer
status is available
{
switch( m_nDrawerNumber )
{
case 1:
bMask = CD7402DRWR1CLOSED;
break;
case 2:
bMask = CD7402DRWR2CLOSED;
break;
}
DWORD sBytes;
// if the status clear was successful, we will read a closed drawer
BOOL sResult = ReadIOPort(&sBytes, m_nIOPort);
if ( sResult )
{
if ( sBytes & bMask ) // bit = 1 means drawer CLOSED for DARLINGTON
{
ResString = _T("CLOSED");
Result = DRAWER_CLOSED;
}
else
{
ResString = _T("OPENED");
Result = DRAWER_OPENED;
}
}//sResult
}
return Result;
}