992double STLots()993{994 double lot;995 if(UseAutoLot)996 {double balance=AccountInfoDouble(ACCOUNT_BALANCE);if(balance<=0)balance=AccountInfoDouble(ACCOUNT_EQUITY);997  lot=NormalizeDouble(balance/(BalancePerLot>0?BalancePerLot:1000.0)*LotPerStep,2);}998 else999 {lot=NormalizeDouble(AccountInfoDouble(ACCOUNT_MARGIN_FREE)*stLegacyRisk/1000.0,2);if(ManualLot!=0)lot=ManualLot;}1000 double step=SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_STEP);1001 double aligned=step*(int)MathRound(lot/step);1002 if(MathAbs(aligned-lot)>0.0000001)lot=aligned;1003 double minimum=SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_MIN),maximum=SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_MAX);1004 if(lot<minimum)lot=minimum;if(lot>maximum)lot=maximum;return lot;1005}1006bool STMarginAllowed(const string symbol,const double lot)1007{1008 MqlTick tick;SymbolInfoTick(symbol,tick);double required=0,free_margin=AccountInfoDouble(ACCOUNT_MARGIN_FREE);1009 if(!OrderCalcMargin(ORDER_TYPE_BUY,symbol,lot,tick.ask,required))return false;1010 return required<=free_margin;1011}1012bool STFill(MqlTradeRequest &request)1013{1014 long mode=SymbolInfoInteger(request.symbol,SYMBOL_TRADE_EXEMODE);1015 if(mode<SYMBOL_TRADE_EXECUTION_MARKET)return true;1016 long flags=SymbolInfoInteger(request.symbol,SYMBOL_FILLING_MODE);1017 if(mode==SYMBOL_TRADE_EXECUTION_MARKET)1018 {if((flags&SYMBOL_FILLING_FOK)!=0)stFilling=ORDER_FILLING_FOK;1019  else if((flags&SYMBOL_FILLING_IOC)!=0)stFilling=ORDER_FILLING_IOC;1020  else{stLastRetcode=TRADE_RETCODE_INVALID_FILL;return false;}}1021 else if(stFilling==ORDER_FILLING_FOK && (flags&SYMBOL_FILLING_FOK)==0)1022 {stLastRetcode=TRADE_RETCODE_INVALID_FILL;return false;}1023 else if(stFilling==ORDER_FILLING_IOC && (flags&SYMBOL_FILLING_IOC)==0)1024 {stLastRetcode=TRADE_RETCODE_INVALID_FILL;return false;}1025 request.type_filling=stFilling;return true;1026}1027bool STSend(MqlTradeRequest &request)1028{1029 MqlTradeResult result={};1030 bool sent=OrderSend(request,result);stLastRetcode=result.retcode;1031 return sent; // Baseline returns request submission bool, not a fill guarantee.1032}1033bool STOpen(const ENUM_ORDER_TYPE side,const double volume,const double price,const double sl,const double tp)1034{1035 if(IsStopped()){stLastRetcode=TRADE_RETCODE_CLIENT_DISABLES_AT;return false;}1036 MqlTradeRequest request={};request.action=TRADE_ACTION_DEAL;request.symbol=_Symbol;1037 request.magic=OrderMagic;request.type=side;request.volume=volume;request.price=price;1038 request.sl=sl;request.tp=tp;request.deviation=10;1039 long modes=SymbolInfoInteger(_Symbol,SYMBOL_ORDER_MODE);1040 if((modes&SYMBOL_ORDER_MARKET)==0){stLastRetcode=TRADE_RETCODE_INVALID_ORDER;return false;}1041 if((modes&SYMBOL_ORDER_SL)==0)request.sl=0;if((modes&SYMBOL_ORDER_TP)==0)request.tp=0;