OrderClose() – 取引関数

bool  OrderClose( 
   int        ticket,      // ticket 
   double     lots,        // volume 
   double     price,       // close price 
   int        slippage,    // slippage 
   color      arrow_color  // color 
   );

#ifdef __MQL5__
#define OP_BUY				((int)0)
#define OP_SELL				((int)1)
#define OP_BUYLIMIT			((int)2)
#define OP_SELLLIMIT		((int)3)
#define OP_BUYSTOP			((int)4)
#define OP_SELLSTOP			((int)5)

///////////////////////////////////////////////////////////////////////////////
// 約定ポジションをクローズする
bool OrderClose(int iTicket, double dLots, double dPrice, int iSlippage, color arrow_color = clrNONE)
{
	bool bResult = false;
	bResult = PositionSelectByTicket(iTicket);
	if (bResult) {
		MqlTradeRequest mqlRequest = {};
		MqlTradeResult mqlResult = {};
		ZeroMemory(mqlResult);
		ZeroMemory(mqlResult);
		mqlRequest.action		= TRADE_ACTION_DEAL;						// 取引操作タイプ
		mqlRequest.position		= iTicket;									// ポジションチケット
		mqlRequest.symbol		= PositionGetString(POSITION_SYMBOL);		// シンボル
		mqlRequest.volume		= dLots;									// ポジションボリューム
		mqlRequest.deviation	= iSlippage;								// 価格からの許容偏差
		mqlRequest.type			= (ENUM_ORDER_TYPE)PositionGetInteger(POSITION_TYPE) == ORDER_TYPE_BUY ? ORDER_TYPE_SELL : ORDER_TYPE_BUY;		// ポジションのType
		mqlRequest.magic		= 0;										// ポジションのMagicNumber
		long lMode = SymbolInfoInteger(mqlRequest.symbol, SYMBOL_FILLING_MODE);
		mqlRequest.type_filling	= SYMBOL_FILLING_IOC == lMode ? ORDER_FILLING_IOC : ORDER_FILLING_FOK;
		if (OrderSend(mqlRequest, mqlResult)) {
			bResult = true;
		} else {
			bResult = false;
		}
	}
	return bResult;
}
///////////////////////////////////////////////////////////////////////////////
// MQL5のオーダータイプに変換する
ENUM_ORDER_TYPE GetOrderType(int iOrderType)
{
	ENUM_ORDER_TYPE OrderTypeTbl [] = {
		ORDER_TYPE_BUY,
		ORDER_TYPE_SELL,
		ORDER_TYPE_BUY_LIMIT,
		ORDER_TYPE_SELL_LIMIT,
		ORDER_TYPE_BUY_STOP,
		ORDER_TYPE_SELL_STOP,
		ORDER_TYPE_BUY_STOP_LIMIT,
		ORDER_TYPE_SELL_STOP_LIMIT,
		ORDER_TYPE_CLOSE_BY,
	};
	return OrderTypeTbl[iOrderType];
}
///////////////////////////////////////////////////////////////////////////////
// オーダーによりポジションをオープンする
int OrderSend(string strSymbol, int iOrderType, double dLots, double dPrice, int iSlippage, 
				double dSL, double dTP, string strComment, int iMagicNumber, datetime dtExpiration, color clOrder)
{
	int iResult = -1;
	MqlTradeRequest mqlRequest = {};
	MqlTradeResult mqlResult = {};
	ZeroMemory(mqlRequest);
	ZeroMemory(mqlResult);
	if (OP_BUY == iOrderType || OP_SELL == iOrderType) {
		mqlRequest.action	= TRADE_ACTION_DEAL;
	} else {
		mqlRequest.action	= TRADE_ACTION_PENDING;
	}
	mqlRequest.symbol		= strSymbol;
	mqlRequest.volume		= dLots;
	mqlRequest.type			= GetOrderType(iOrderType);
	mqlRequest.price		= dPrice;
	mqlRequest.sl			= NormalizeDouble(dSL, (int)SymbolInfoInteger(strSymbol, SYMBOL_DIGITS));
	mqlRequest.tp			= NormalizeDouble(dTP, (int)SymbolInfoInteger(strSymbol, SYMBOL_DIGITS));
	mqlRequest.price		= dPrice;
	mqlRequest.deviation	= iSlippage;
	mqlRequest.magic		= iMagicNumber;
	mqlRequest.comment		= strComment;
	long lMode = SymbolInfoInteger(strSymbol, SYMBOL_FILLING_MODE);
	mqlRequest.type_filling	= SYMBOL_FILLING_IOC == lMode ? ORDER_FILLING_IOC : ORDER_FILLING_FOK;
	bool bResult =  OrderSend(mqlRequest, mqlResult);
	if (bResult) {
		iResult = (int)mqlResult.order;
	} else {
	    iResult = -1;
	}
	return iResult;
}

#endif

int iNewTicket = -1;
void OnTick()
{
	if (-1 == iNewTicket) {
		iNewTicket = OrderSend(Symbol(), OP_BUY, 0.02,
					NormalizeDouble(Ask, Digits),		//注文価格
					10,
					NormalizeDouble(100, Digits),		//S/L
					NormalizeDouble(150, Digits),		//T/P
					"",
					1,
					0,
					clrBlue);
		EventSetTimer(10);
	}
}
void OnTimer()
{
	bool bResult = OrderClose(iNewTicket, 0.02, Bid, 10, clrNONE);
	EventKillTimer();
}

///////////////////////////////////////////////////////////////////////////////
//	MQL4/5用コード
///////////////////////////////////////////////////////////////////////////////
bool PositionClose(int iTicket, double dLots, double dPrice, int iSlippage, color arrow_color = clrNONE)
{
	bool bResult = false;
	return OrderClose(iTicket, dLots, dPrice, iSlippage, arrow_color);
}

int iNewTicket = -1;
void OnTick()
{
	if (-1 == iNewTicket) {
		iNewTicket = OrderSend(Symbol(), OP_BUY, 0.02,
					NormalizeDouble(Ask, Digits),		//注文価格
					10,
					NormalizeDouble(100, Digits),		//S/L
					NormalizeDouble(150, Digits),		//T/P
					"",
					1,
					0,
					clrBlue);
		EventSetTimer(10);
	}
}
void OnTimer()
{
	bool bResult = PositionClose(iNewTicket, 0.02, Bid, 10, clrNONE);
	EventKillTimer();
}