void cancelTransaction()
{
//TransactionType t = mTransaction;
//mTransaction = TRANS_NONE;
//switch (t)
//{
// case TRANS_TRADE:
// static_cast< Trade * >(mTransactionHandler).cancel();
// break;
// case TRANS_BUYSELL:
// static_cast< BuySell * >(mTransactionHandler).cancel();
// break;
// case TRANS_NONE:
// return;
//}
}