define ID_OWN_MAG_NUM 9999999 // ALWAYS: use MagicNumber of the expert, to avoid MIX
//+----------------------
//| Closing all positions, MATCHING this ID_OWN_MAG_NUM ( avoid deleting others ...
//+----------------------
void OnStart()
{ // .DEF + .INIT the trade request and result of trade request
MqlTradeRequest request;
MqlTradeResult result;
int total = PositionsTotal(); // .GET number of open positions
for ( int i = total - 1; i >= 0; i-- ) // .ITER over all open positions
{ // .GET params of the order:
ulong position_ticket = PositionGetTicket( i ); // - ticket of the position
string position_symbol = PositionGetString( POSITION_SYMBOL ); // - symbol
int digits = (int) SymbolInfoInteger( position_symbol,
SYMBOL_DIGITS
); // - number of decimal places
ulong magic = PositionGetInteger( POSITION_MAGIC ); // - MagicNumber of the position
double volume = PositionGetDouble( POSITION_VOLUME ); // - volume of the position
ENUM_POSITION_TYPE type = (ENUM_POSITION_TYPE) PositionGetInteger( POSITION_TYPE ); // - type of the position
PrintFormat( "Tkt[#%I64u] %s %s %.2f %s MagNUM[%I64d]", // .GUI: print details about the position
position_ticket,
position_symbol,
EnumToString(type),
volume,
DoubleToString( PositionGetDouble( POSITION_PRICE_OPEN ), digits ),
magic
);
if ( magic == ID_OWN_MAG_NUM ) // .IF MATCH:
{ ZeroMemory( request ); // .CLR data
ZeroMemory( result ); // .CLR data
// .SET:
request.action = TRADE_ACTION_DEAL; // - type of trade operation
request.position = position_ticket; // - ticket of the position
request.symbol = position_symbol; // - symbol
request.volume = volume; // - volume of the position
request.deviation = 5; // - allowed deviation from the price
request.magic = EXPERT_MAGIC; // - MagicNumber of the position
if ( type == POSITION_TYPE_BUY )
{ request.price = SymbolInfoDouble( position_symbol, SYMBOL_BID );
request.type = ORDER_TYPE_SELL;
}
else
{
request.price = SymbolInfoDouble( position_symbol, SYMBOL_ASK );
request.type = ORDER_TYPE_BUY;
}
PrintFormat( "WILL TRY: Close Tkt[#%I64d] %s %s", position_ticket,
position_symbol,
EnumToString( type )
);
if ( !OrderSend( request,result ) )
PrintFormat( "INF: OrderSend(Tkt[#%I64d], ... ) call ret'd error %d", position_ticket,
GetLastError()
);
PrintFormat( "INF: Tkt[#%I64d] retcode=%u deal=%I64u order=%I64u", position_ticket,
result.retcode,
result.deal,
result.order
);
}
}
}
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------
POSITION_MAGIC is used in current open Position selection process.
PositionSelect() example:
int CurPosLots() // total lots in current symbol position { int total=PositionsTotal(); double lots=0; for (int cnt=0; cnt<total; cnt++) { if(PositionSelect(Sysbol()) ) { if(PositionGetInteger(POSITION_MAGIC)==MagicNumber) { lots=PositionGetDouble(POSITION_VOLUME); } } } return(lots); }
