public static BHTController Create(TextBox labelScan)
{
if (_BHTControllerOpt == null)
{
lock (syncLock)
{
if (_BHTControllerOpt == null)
{
_BHTControllerOpt = new BHTControllerOpt();
if (_BHTControllerOpt.MyScanner == null)
{
lock (syncLockScanner)
{
_BHTControllerOpt.MyScanner = new Scanner();
_BHTControllerOpt.MyScanner.RdMode = _BHTControllerOpt.MyScanner.DEFAULT_RD_MODE;
_BHTControllerOpt.MyScanner.RdType = _BHTControllerOpt.MyScanner.DEFAULT_RD_TYPE;
_BHTControllerOpt.MyScanner.OnDone += _BHTControllerOpt.MyScanner_OnDone;
_BHTControllerOpt.LabelScan = labelScan;
}
}
}
}
}
return(_BHTControllerOpt);
}
public static BHTController Create()
{
// Support multithreaded applications through
// 'Double checked locking' pattern which (once
// the instance exists) avoids locking each
// time the method is invoked
if (_BHTControllerOpt == null)
{
lock (syncLock)
{
if (_BHTControllerOpt == null)
{
_BHTControllerOpt = new BHTControllerOpt();
}
}
}
return(_BHTControllerOpt);
}