我在使用 MQL5 修改正在运行的交易的止损时遇到了麻烦。选择订单对我有用。但是如果我尝试访问变量（例如OrderTicket()& OrderOpenPrice()），它总是返回 0.00000：
2017.06.01 00:06:32.114 2016.04.08 00:00:00 failed modify buy 0.00 sl: 0.00000, tp: 0.00000 -> sl: 1.41594, tp: 0.00000 [Invalid request]
这是我的止损修改无效：
void modifyStops() {
int total = OrdersTotal(); // total number of placed pending orders
Print( total + " Orders on the line!!!" );
//--- Over all placed pending orders
for ( int i = 0; i < total; i++ )
{ bool isOrderSelected = OrderSelect( i, SELECT_BY_POS, MODE_TRADES );
if ( isOrderSelected )
{ // TODO: Check the Trades to contain the correct Order Number
Print( "Symbol & Magicnumber matching" );
double newStopLoss;
// Update the stop loss
if ( OrderType() == OP_BUY )
{
newStopLoss = addTolerance( SL );
}
else if ( OrderType() == OP_SELL )
{
newStopLoss = minusTolerance( SL );
}
newStopLoss = NormalizeDouble( newStopLoss, Digits );
Print( "NEW STOP LOSS::::=====> ", Symbol(), " at ", newStopLoss );
if ( !OrderModify( OrderTicket(), OrderOpenPrice(), newStopLoss, OrderTakeProfit(), 0, Green ) )
{
Print( "OrderModify returned the error of ", GetLastError() );
}
}
}
CTrade 课程对我来说不能正常工作。我试图实现您发布的代码 - 但是：它似乎仍然没有成功。
不幸的是，我在我的 EA 中实现了这一点，当交易进行时 OrderGetTicket(i) 返回零。所以我的 void 看起来像这样：
void modifyStops() {
for(int i=0; i<PositionsTotal();i++)
{
ulong ticket;
if((ticket=PositionGetTicket(i))>0)
{
//--- return order properties
double open_price =PositionGetDouble(POSITION_PRICE_OPEN);
datetime time_open =(datetime)PositionGetInteger(POSITION_TIME);
string symbol =PositionGetString(POSITION_SYMBOL);
int order_magic =PositionGetInteger(POSITION_MAGIC);
double volume =PositionGetDouble(POSITION_VOLUME);
double stoploss =PositionGetDouble(POSITION_SL);
double takeprofit =PositionGetDouble(POSITION_TP);
ENUM_ORDER_TYPE type =EnumToString(ENUM_ORDER_TYPE(PositionGetInteger(POSITION_TYPE)));
//--- prepare and show information about the order
printf("#ticket %d %s %G %s at %G, with sl: %G tp: %G was set up at %s",
ticket, // order ticket
type, // type
volume, // placed volume
symbol, // symbol
open_price, // specified open price
stoploss, //
takeprofit, //
TimeToString(time_open) // time of order placing
);
}
}
}
printf 函数什么也不返回：
2017.06.02 01:42:26.910 2016.04.07 00:00:00 #ticket 1 (non-string passed) 0 at 0, with sl: 0 tp: 0 was set up at 1970.01.01 00:00
我不敢相信在 MQL5 中简单地修改 SL 有那么难。这太可怕了。但是我需要通过它来测试我在几对上的策略......
你有别的想法吗？我使用以下代码设置交易：
void createPendingOrder(ENUM_ORDER_TYPE orderType, double lots, double stopLoss) {
MqlTradeRequest request={0};
MqlTradeResult result={0};
//--- parameters to place a pending order
request.action =TRADE_ACTION_PENDING; // type of trade operation
request.symbol =Symbol(); // symbol
request.volume =lots; // volume of 0.1 lot
//request.deviation=2; // allowed deviation from the price
request.magic =224466 ; // MagicNumber of the order
//int offset = 3; // offset from the current price to place the order, in points
double price; // order triggering price
double point=SymbolInfoDouble(_Symbol,SYMBOL_POINT); // value of point
int digits=SymbolInfoInteger(_Symbol,SYMBOL_DIGITS); // number of decimal places (precision)
//--- checking the type of operation
if(orderType==ORDER_TYPE_BUY_STOP)
{
request.type =ORDER_TYPE_BUY_STOP; // order type
price =entryPrice;
request.price =NormalizeDouble(price,digits); // normalized opening price
request.sl =stopLoss;
}
else if(orderType==ORDER_TYPE_SELL_STOP)
{
request.type =ORDER_TYPE_SELL_STOP; // order type
price =entryPrice;
request.price =NormalizeDouble(price,digits); // normalized opening price
request.sl =stopLoss;
}
else Alert("This example is only for placing pending orders"); // if not pending order is selected
//--- send the request
if(!OrderSend(request,result))
PrintFormat("OrderSend error %d",GetLastError()); // if unable to send the request, output the error code
//--- information about the operation
PrintFormat("retcode=%u deal=%I64u order=%I64u",result.retcode,result.deal,result.order);
}
例如，是否可以将结果对象保存在数组中，然后通过该对象访问正在运行的交易？