頭寸大小計(jì)算器 (MT4 MT5指標(biāo))

作者：MT4 MT5 來源：本站原創(chuàng) 發(fā)布時間：2012年05月13日

這是為交易商提供的一個免費(fèi)的在線工具— 頭寸大小計(jì)算器。該指標(biāo)適合MT4和MT5。

頭寸大小計(jì)算器 (MetaTrader 指標(biāo)) — 通過給定進(jìn)場/止損水平、風(fēng)險(xiǎn)承受水平和當(dāng)前市場數(shù)據(jù)，比如賬戶大小和貨幣，所交易貨幣對報(bào)價(jià)貨幣相對賬戶貨幣的價(jià)格，來計(jì)算頭寸手?jǐn)?shù)。計(jì)算結(jié)果將以文本標(biāo)簽的形式顯示在主圖表窗口。交易商可以調(diào)整眾多參數(shù)，包括計(jì)算和顯示。

輸入?yún)?shù)：

EntryLevel (默認(rèn) = 0) — 計(jì)劃開啟頭寸的價(jià)位。

StopLossLevel (默認(rèn) = 0) — 計(jì)劃開啟頭寸的止損價(jià)位。

Risk (默認(rèn) = 1) — 賬戶余額/資產(chǎn)承受風(fēng)險(xiǎn)的百分比點(diǎn)數(shù)。

UseEquityInsteadOfBalance (默認(rèn) = false) — 如果選擇true，計(jì)算時將以賬戶資金凈值代理賬戶余額。

font_color (默認(rèn) = LightBlue/clrLightBlue) — 指標(biāo)數(shù)據(jù)顯示的字體顏色。

ps_font_color (默認(rèn) = Red/clrRed) — 頭寸大小計(jì)算結(jié)果的字體顏色。

font_size (默認(rèn) = 12) — 顯示文本的字體大小。

font_face (默認(rèn) = "Courier") — 指標(biāo)的字體風(fēng)格。

corner (默認(rèn) = 0/CORNER_LEFT_UPPER) — 指標(biāo)文本的位置。在MT4上：0 — 代表左上角，1 —代表右上角，2 — 代表左下角，3 — 代表右下角。在MT5上，非常明顯。

distance_x (默認(rèn) = 10) — 指標(biāo)文本的位置到指標(biāo)文本的水平距離。

distance_y (默認(rèn) = 130) — 指標(biāo)文本的位置到指標(biāo)文本的垂直距離。

entry_line_color (默認(rèn) = Blue/clrBlue) — 入場線的顏色。

stop_loss_line_color (默認(rèn) = Lime/clrLime) — 止損線的顏色。

很顯然，該指標(biāo)不是用來發(fā)出交易信號的。它的作用是幫助外匯交易商計(jì)算在他們允許的風(fēng)險(xiǎn)承受水平和給定頭寸參數(shù)的條件下計(jì)算頭寸的大小。

該指標(biāo)需要將計(jì)劃開啟訂單的價(jià)位和止損參數(shù)設(shè)置為非零的數(shù)值。這些值也必須為不同的數(shù)值。您可以將進(jìn)場/止損線直接在圖表上上下拖拽。頭寸大小會隨著每條線的每次移動而重新計(jì)算（僅適用于MT5）。

標(biāo)簽:MT4 MT5指標(biāo)源碼

MT4源碼：


//+------------------------------------------------------------------+
//|                                       PositionSizeCalculator.mq4 |
//|                                  Copyright ? 2012, Andriy Moraru |
//+------------------------------------------------------------------+
#property copyright "www.kzuj.com.cn"
#property link      "http://www.kzuj.com.cn"

/*
   Calculates position size based on account balance/equity,
   currency, currency pair, given entry level, stop-loss level
   and risk tolerance (set either in percentage points or in base currency).
*/

#property indicator_chart_window

extern double EntryLevel = 0;
extern double StopLossLevel = 0;
extern double Risk = 1; // Risk tolerance in percentage points
extern double MoneyRisk = 0; // Risk tolerance in base currency
extern bool UseMoneyInsteadOfPercentage = false;
extern bool UseEquityInsteadOfBalance = false;

extern color font_color = LightBlue;
extern color ps_font_color = Red;
extern int font_size = 12;
extern string font_face = "Courier";
extern int corner = 0; //0 - for top-left corner, 1 - top-right, 2 - bottom-left, 3 - bottom-right
extern int distance_x = 10;
extern int distance_y = 15;
extern color entry_line_color = Blue;
extern color stoploss_line_color = Lime;

string QuoteCurrency = "", ReferencePair = "";
double ReferencePrice = 0;
int ReferenceType = -1;
string ModeText, SizeText;
double Size, RiskMoney;
double PositionSize;
double StopLoss;
double UnitCost = 1;

void InitializeReferencePair()
{
   // Try Ask for AccountCurrency/QouteCurrency
   ReferencePair = AccountCurrency() + QuoteCurrency;
   ReferenceType = MODE_ASK;
   ReferencePrice = MarketInfo(ReferencePair, ReferenceType);
   // Try Bid for QuoteCurrency/AccountCurrency
   if (!ReferencePrice)
   {
      ReferencePair = QuoteCurrency + AccountCurrency();
      ReferenceType = MODE_BID;
      ReferencePrice = MarketInfo(ReferencePair, ReferenceType);
   }
   
   if (!ReferencePrice)
   {
      Alert("Failed to detect a proper currency pair for pip valuation.");
      Alert("Try adding all the available currency pairs to Market Watch.");
      ReferenceType = -1;
      return;
   }

   if (ReferenceType == MODE_BID) ModeText = "Bid";
   else if (ReferenceType == MODE_ASK) ModeText = "Ask";
   ObjectCreate("ReferencePair", OBJ_LABEL, 0, 0, 0);
   ObjectSet("ReferencePair", OBJPROP_CORNER, corner);
   ObjectSet("ReferencePair", OBJPROP_XDISTANCE, distance_x);
   ObjectSet("ReferencePair", OBJPROP_YDISTANCE, distance_y + 30);
   ObjectSetText("ReferencePair", ReferencePair + " " + ModeText + ":   " + DoubleToStr(ReferencePrice, Digits), font_size, font_face, font_color);
}

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
{
   if (EntryLevel - StopLossLevel == 0)
   {
      Alert("Entry and Stop-Loss levels should be different and non-zero.");
      return(-1);
   }

   // Determine the symbol quote currency
   if ((StringSubstr(Symbol(), 0, 1) == "#") || (StringFind(Symbol(), ".") != -1) || (StringFind(Symbol(), "_") != -1)) QuoteCurrency = "USD"; // CFD
   else if ((StringLen(Symbol()) != 6) && (StringSubstr(Symbol(), 0, 1) != "m") && (StringSubstr(Symbol(), 0, 1) != "x")) QuoteCurrency = "USD"; // Some commodity?
   else QuoteCurrency = StringSubstr(Symbol(), 3, 3); // Currency pair

   // Need to take into account the rate (Bid or Ask) of a reference currency pair
   // Can do it only if connected to account
   if ((AccountCurrency() != QuoteCurrency) && (AccountCurrency() != "")) InitializeReferencePair();
   
   ObjectCreate("Entry", OBJ_LABEL, 0, 0, 0);
   ObjectSet("Entry", OBJPROP_CORNER, corner);
   ObjectSet("Entry", OBJPROP_XDISTANCE, distance_x);
   ObjectSet("Entry", OBJPROP_YDISTANCE, distance_y);
   ObjectSetText("Entry", "Entry Lvl:    " + DoubleToStr(EntryLevel, Digits), font_size, font_face, font_color);

   ObjectCreate("EntryLine", OBJ_HLINE, 0, Time[0], EntryLevel);
   ObjectSet("EntryLine", OBJPROP_STYLE, STYLE_SOLID);
   ObjectSet("EntryLine", OBJPROP_COLOR, entry_line_color);
   ObjectSet("EntryLine", OBJPROP_WIDTH, 1);

   ObjectCreate("StopLoss", OBJ_LABEL, 0, 0, 0);
   ObjectSet("StopLoss", OBJPROP_CORNER, corner);
   ObjectSet("StopLoss", OBJPROP_XDISTANCE, distance_x);
   ObjectSet("StopLoss", OBJPROP_YDISTANCE, distance_y + 15);
   ObjectSetText("StopLoss", "Stop-Loss:    " + DoubleToStr(StopLossLevel, Digits), font_size, font_face, font_color);
   
   ObjectCreate("StopLossLine", OBJ_HLINE, 0, Time[0], StopLossLevel);
   ObjectSet("StopLossLine", OBJPROP_STYLE, STYLE_SOLID);
   ObjectSet("StopLossLine", OBJPROP_COLOR, stoploss_line_color);
   ObjectSet("StopLossLine", OBJPROP_WIDTH, 1);

   StopLoss = MathAbs(EntryLevel - StopLossLevel);
   
   if (!UseMoneyInsteadOfPercentage)
   {
      ObjectCreate("Risk", OBJ_LABEL, 0, 0, 0);
      ObjectSet("Risk", OBJPROP_CORNER, corner);
      ObjectSet("Risk", OBJPROP_XDISTANCE, distance_x);
      ObjectSet("Risk", OBJPROP_YDISTANCE, distance_y + 45);
      ObjectSetText("Risk", "Risk:         " + DoubleToStr(Risk, 2) + "%", font_size, font_face, font_color);
   }
   
   if (UseEquityInsteadOfBalance)
   {
      SizeText = "Equity";
      Size = AccountEquity();
   }
   else
   {
      SizeText = "Balance";
      Size = AccountBalance();
   }
   ObjectCreate("AccountSize", OBJ_LABEL, 0, 0, 0);
   ObjectSet("AccountSize", OBJPROP_CORNER, corner);
   ObjectSet("AccountSize", OBJPROP_XDISTANCE, distance_x);
   ObjectSet("AccountSize", OBJPROP_YDISTANCE, distance_y + 60);
   ObjectSetText("AccountSize", "Acc. " + SizeText + ": " + DoubleToStr(Size, 2), font_size, font_face, font_color);
   
   if (!UseMoneyInsteadOfPercentage) RiskMoney = Size * Risk / 100;
   else RiskMoney = MoneyRisk;
   ObjectCreate("RiskMoney", OBJ_LABEL, 0, 0, 0);
   ObjectSet("RiskMoney", OBJPROP_CORNER, corner);
   ObjectSet("RiskMoney", OBJPROP_XDISTANCE, distance_x);
   ObjectSet("RiskMoney", OBJPROP_YDISTANCE, distance_y + 75);
   ObjectSetText("RiskMoney", "Risk, money:  " + DoubleToStr(RiskMoney, 2), font_size, font_face, font_color);
   
   
   if (ReferenceType == MODE_ASK)
   {
      RefreshRates();
      ReferencePrice = MarketInfo(ReferencePair, ReferenceType);
      UnitCost = 1 / ReferencePrice;
   }
	else if (ReferenceType == MODE_BID)
	{
      RefreshRates();
      ReferencePrice = MarketInfo(ReferencePair, ReferenceType);
      UnitCost = ReferencePrice;
   }

   ObjectCreate("PositionSize", OBJ_LABEL, 0, 0, 0);
   ObjectSet("PositionSize", OBJPROP_CORNER, corner);
   ObjectSet("PositionSize", OBJPROP_XDISTANCE, distance_x);
   ObjectSet("PositionSize", OBJPROP_YDISTANCE, distance_y + 90);

   if ((ReferenceType != -1) && (AccountCurrency() != QuoteCurrency)) return(0);

   PositionSize = (RiskMoney / StopLoss) / 100000 / UnitCost;
   ObjectSetText("PositionSize", "Pos. Size:    " + DoubleToStr(PositionSize, 2), font_size + 1, font_face, ps_font_color);

   return(0);
}

//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
{
   ObjectDelete("Entry");
   ObjectDelete("EntryLine");
   ObjectDelete("StopLoss");
   ObjectDelete("StopLossLine");
   if (!UseMoneyInsteadOfPercentage) ObjectDelete("Risk"); // Otherwise wasn't created.
   ObjectDelete("ReferencePair");
   ObjectDelete("AccountSize");
   ObjectDelete("RiskMoney");
   ObjectDelete("PositionSize");
   return(0);
}

//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
{
   if (EntryLevel - StopLossLevel == 0) return(0);
   
   // Need to initialize reference pair because we couldn't do it in init() as the there was no connection to account
   if ((AccountCurrency() != QuoteCurrency) && (ReferencePair == ""))
   {
      if (AccountCurrency() == "") return(0);
      InitializeReferencePair();
   }
   
   double tEntryLevel = ObjectGet("EntryLine", OBJPROP_PRICE1);
   double tStopLossLevel = ObjectGet("StopLossLine", OBJPROP_PRICE1);
   ObjectSetText("Entry", "Entry Lvl:    " + DoubleToStr(tEntryLevel, Digits), font_size, font_face, font_color);
   ObjectSetText("StopLoss", "Stop-Loss:    " + DoubleToStr(tStopLossLevel, Digits), font_size, font_face, font_color);

   StopLoss = MathAbs(tEntryLevel - tStopLossLevel);

   if (UseEquityInsteadOfBalance) Size = AccountEquity();
   else Size = AccountBalance();
   ObjectSetText("AccountSize", "Acc. " + SizeText + ": " + DoubleToStr(Size, 2), font_size, font_face, font_color);

   if (!UseMoneyInsteadOfPercentage) RiskMoney = Size * Risk / 100;
   else RiskMoney = MoneyRisk;
   ObjectSetText("RiskMoney", "Risk, money:  " + DoubleToStr(RiskMoney, 2), font_size, font_face, font_color);

   if (ReferenceType != -1)
   {
      ReferencePrice = MarketInfo(ReferencePair, ReferenceType);
      ObjectSetText("ReferencePair", ReferencePair + " " + ModeText + ":   " + DoubleToStr(ReferencePrice, Digits), font_size, font_face, font_color);
   
      if (ReferenceType == MODE_ASK) UnitCost = 1 / ReferencePrice;
	   else if (ReferenceType == MODE_BID) UnitCost = ReferencePrice;
   }

   PositionSize = (RiskMoney / StopLoss) / 100000 / UnitCost;
   
   ObjectSetText("PositionSize", "Pos. Size:    " + DoubleToStr(PositionSize, 2), font_size + 1, font_face, ps_font_color);
   
   return(0);
}
//+------------------------------------------------------------------+

MT5源碼：

//+------------------------------------------------------------------+
//|                                       PositionSizeCalculator.mq5 |
//|                                  Copyright ? 2012, Andriy Moraru |
//+------------------------------------------------------------------+
#property copyright "www.kzuj.com.cn"
#property link      "http://www.kzuj.com.cn"
#property version   "1.1"

#property description "Calculates position size based on account balance/equity,"
#property description "currency, currency pair, given entry level, stop-loss level"
#property description "and risk tolerance (set either in percentage points or in base currency)."
#property description " "
#property description "2012-05-10, ver. 1.1 - added support for setting risk in money."

#property indicator_chart_window

input double EntryLevel = 0;
input double StopLossLevel = 0;
input double Risk = 1; // Risk tolerance in percentage points
input double MoneyRisk = 0; // Risk tolerance in base currency
input bool UseMoneyInsteadOfPercentage = false;
input bool UseEquityInsteadOfBalance = false;

input color font_color = clrLightBlue;
input color ps_font_color = clrRed;
input int font_size = 12;
input string font_face = "Courier";
input ENUM_BASE_CORNER corner = CORNER_LEFT_UPPER;
input int distance_x = 10;
input int distance_y = 15;
input color entry_line_color = clrBlue;
input color stoploss_line_color = clrLime;

string QuoteCurrency = "", ReferencePair = "";
double ReferencePrice = 0;
ENUM_SYMBOL_INFO_DOUBLE ReferenceType = -1;
string ModeText, SizeText;
double Size, RiskMoney;
double PositionSize;
double StopLoss;
double UnitCost = 1;

void InitializeReferencePair()
{
   // Try Ask for AccountCurrency/QouteCurrency
   ReferencePair = AccountInfoString(ACCOUNT_CURRENCY) + QuoteCurrency;
   ReferenceType = SYMBOL_ASK;
   ReferencePrice = SymbolInfoDouble(ReferencePair, ReferenceType);
   // Try Bid for QuoteCurrency/AccountCurrency
   if (!ReferencePrice)
   {
      ReferencePair = QuoteCurrency + AccountInfoString(ACCOUNT_CURRENCY);
      ReferenceType = SYMBOL_BID;
      ReferencePrice = SymbolInfoDouble(ReferencePair, ReferenceType);
   }
   
   if (!ReferencePrice)
   {
      Alert("Failed to detect a proper currency pair for pip valuation.");
      Alert("Try adding all the available currency pairs to Market Watch.");
      ReferenceType = -1;
      return;
   }

   if (ReferenceType == SYMBOL_BID) ModeText = "Bid";
   else if (ReferenceType == SYMBOL_ASK) ModeText = "Ask";
   ObjectCreate(0, "ReferencePair", OBJ_LABEL, 0, 0, 0);
   ObjectSetInteger(0, "ReferencePair", OBJPROP_CORNER, corner);
   ObjectSetInteger(0, "ReferencePair", OBJPROP_XDISTANCE, distance_x);
   ObjectSetInteger(0, "ReferencePair", OBJPROP_YDISTANCE, distance_y + 30);
   ObjectSetString(0, "ReferencePair", OBJPROP_TEXT, ReferencePair + " " + ModeText + ":   " + DoubleToString(ReferencePrice, _Digits));
   ObjectSetInteger(0, "ReferencePair", OBJPROP_FONTSIZE, font_size);
   ObjectSetString(0, "ReferencePair", OBJPROP_FONT, font_face);
   ObjectSetInteger(0, "ReferencePair", OBJPROP_COLOR, font_color);
}

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
void OnInit()
{
   if (EntryLevel - StopLossLevel == 0)
   {
      Alert("Entry and Stop-Loss levels should be different and non-zero.");
      return;
   }

   // Determine the symbol quote currency
   if ((StringSubstr(Symbol(), 0, 1) == "#") || (StringFind(Symbol(), ".") != -1) || (StringFind(Symbol(), "_") != -1)) QuoteCurrency = "USD"; // CFD
   else if ((StringLen(Symbol()) != 6) && (StringSubstr(Symbol(), 0, 1) != "m") && (StringSubstr(Symbol(), 0, 1) != "x")) QuoteCurrency = "USD"; // Some commodity?
   else QuoteCurrency = StringSubstr(Symbol(), 3, 3); // Currency pair

   // Need to take into account the rate (Bid or Ask) of a reference currency pair
   // Can do it only if connected to account
   if ((AccountInfoString(ACCOUNT_CURRENCY) != QuoteCurrency) && (AccountInfoString(ACCOUNT_CURRENCY) != "")) InitializeReferencePair();
   
   ObjectCreate(0, "Entry", OBJ_LABEL, 0, 0, 0);
   ObjectSetInteger(0, "Entry", OBJPROP_CORNER, corner);
   ObjectSetInteger(0, "Entry", OBJPROP_XDISTANCE, distance_x);
   ObjectSetInteger(0, "Entry", OBJPROP_YDISTANCE, distance_y);
   ObjectSetString(0, "Entry", OBJPROP_TEXT, "Entry Lvl:    " + DoubleToString(EntryLevel, _Digits));
   ObjectSetInteger(0, "Entry", OBJPROP_FONTSIZE, font_size);
   ObjectSetString(0, "Entry", OBJPROP_FONT, font_face);
   ObjectSetInteger(0, "Entry", OBJPROP_COLOR, font_color);

   
   ObjectCreate(0, "EntryLine", OBJ_HLINE, 0, TimeCurrent(), EntryLevel);
   ObjectSetInteger(0, "EntryLine", OBJPROP_STYLE, STYLE_SOLID);
   ObjectSetInteger(0, "EntryLine", OBJPROP_COLOR, entry_line_color);
   ObjectSetInteger(0, "EntryLine", OBJPROP_WIDTH, 1);
   ObjectSetInteger(0, "EntryLine", OBJPROP_SELECTABLE, true);

   ObjectCreate(0, "StopLoss", OBJ_LABEL, 0, 0, 0);
   ObjectSetInteger(0, "StopLoss", OBJPROP_CORNER, corner);
   ObjectSetInteger(0, "StopLoss", OBJPROP_XDISTANCE, distance_x);
   ObjectSetInteger(0, "StopLoss", OBJPROP_YDISTANCE, distance_y + 15);
   ObjectSetString(0, "StopLoss", OBJPROP_TEXT, "Stop-Loss:    " + DoubleToString(StopLossLevel, _Digits));
   ObjectSetInteger(0, "StopLoss", OBJPROP_FONTSIZE, font_size);
   ObjectSetString(0, "StopLoss", OBJPROP_FONT, font_face);
   ObjectSetInteger(0, "StopLoss", OBJPROP_COLOR, font_color);

   ObjectCreate(0, "StopLossLine", OBJ_HLINE, 0, TimeCurrent(), StopLossLevel);
   ObjectSetInteger(0, "StopLossLine", OBJPROP_STYLE, STYLE_SOLID);
   ObjectSetInteger(0, "StopLossLine", OBJPROP_COLOR, stoploss_line_color);
   ObjectSetInteger(0, "StopLossLine", OBJPROP_WIDTH, 1);
   ObjectSetInteger(0, "StopLossLine", OBJPROP_SELECTABLE, true);

   StopLoss = MathAbs(EntryLevel - StopLossLevel);
   
   if (!UseMoneyInsteadOfPercentage)
   {
      ObjectCreate(0, "Risk", OBJ_LABEL, 0, 0, 0);
      ObjectSetInteger(0, "Risk", OBJPROP_CORNER, corner);
      ObjectSetInteger(0, "Risk", OBJPROP_XDISTANCE, distance_x);
      ObjectSetInteger(0, "Risk", OBJPROP_YDISTANCE, distance_y + 45);
      ObjectSetString(0, "Risk", OBJPROP_TEXT, "Risk:         " + DoubleToString(Risk, 2) + "%");
      ObjectSetInteger(0, "Risk", OBJPROP_FONTSIZE, font_size);
      ObjectSetString(0, "Risk", OBJPROP_FONT, font_face);
      ObjectSetInteger(0, "Risk", OBJPROP_COLOR, font_color);
   }
   
   if (UseEquityInsteadOfBalance)
   {
      SizeText = "Equity";
      Size = AccountInfoDouble(ACCOUNT_EQUITY);
   }
   else
   {
      SizeText = "Balance";
      Size = AccountInfoDouble(ACCOUNT_BALANCE);
   }
   ObjectCreate(0, "AccountSize", OBJ_LABEL, 0, 0, 0);
   ObjectSetInteger(0, "AccountSize", OBJPROP_CORNER, corner);
   ObjectSetInteger(0, "AccountSize", OBJPROP_XDISTANCE, distance_x);
   ObjectSetInteger(0, "AccountSize", OBJPROP_YDISTANCE, distance_y + 60);
   ObjectSetString(0, "AccountSize", OBJPROP_TEXT, "Acc. " + SizeText + ": " + DoubleToString(Size, 2));
   ObjectSetInteger(0, "AccountSize", OBJPROP_FONTSIZE, font_size);
   ObjectSetString(0, "AccountSize", OBJPROP_FONT, font_face);
   ObjectSetInteger(0, "AccountSize", OBJPROP_COLOR, font_color);
   
   if (!UseMoneyInsteadOfPercentage) RiskMoney = Size * Risk / 100;
   else RiskMoney = MoneyRisk;
   ObjectCreate(0, "RiskMoney", OBJ_LABEL, 0, 0, 0);
   ObjectSetInteger(0, "RiskMoney", OBJPROP_CORNER, corner);
   ObjectSetInteger(0, "RiskMoney", OBJPROP_XDISTANCE, distance_x);
   ObjectSetInteger(0, "RiskMoney", OBJPROP_YDISTANCE, distance_y + 75);
   ObjectSetString(0, "RiskMoney", OBJPROP_TEXT, "Risk, money:  " + DoubleToString(RiskMoney, 2));
   ObjectSetInteger(0, "RiskMoney", OBJPROP_FONTSIZE, font_size);
   ObjectSetString(0, "RiskMoney", OBJPROP_FONT, font_face);
   ObjectSetInteger(0, "RiskMoney", OBJPROP_COLOR, font_color);
   
   
   if (ReferenceType == SYMBOL_ASK)
   {
      ReferencePrice = SymbolInfoDouble(ReferencePair, ReferenceType);
      UnitCost = 1 / ReferencePrice;
   }
	else if (ReferenceType == SYMBOL_BID)
	{
      ReferencePrice = SymbolInfoDouble(ReferencePair, ReferenceType);
      UnitCost = ReferencePrice;
   }

   ObjectCreate(0, "PositionSize", OBJ_LABEL, 0, 0, 0);
   ObjectSetInteger(0, "PositionSize", OBJPROP_CORNER, corner);
   ObjectSetInteger(0, "PositionSize", OBJPROP_XDISTANCE, distance_x);
   ObjectSetInteger(0, "PositionSize", OBJPROP_YDISTANCE, distance_y + 90);
   ObjectSetInteger(0, "PositionSize", OBJPROP_FONTSIZE, font_size + 1);
   ObjectSetString(0, "PositionSize", OBJPROP_FONT, font_face);
   ObjectSetInteger(0, "PositionSize", OBJPROP_COLOR, ps_font_color);

   if ((ReferenceType != -1) && (AccountInfoString(ACCOUNT_CURRENCY) != QuoteCurrency)) return;

   PositionSize = (RiskMoney / StopLoss) / 100000 / UnitCost;
   ObjectSetString(0, "PositionSize", OBJPROP_TEXT, "Pos. Size:    " + DoubleToString(PositionSize, 2));
}

//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
   ObjectDelete(0, "Entry");
   ObjectDelete(0, "EntryLine");
   ObjectDelete(0, "StopLoss");
   ObjectDelete(0, "StopLossLine");
   if (!UseMoneyInsteadOfPercentage) ObjectDelete(0, "Risk"); // Otherwise wasn't created.
   ObjectDelete(0, "ReferencePair");
   ObjectDelete(0, "AccountSize");
   ObjectDelete(0, "RiskMoney");
   ObjectDelete(0, "PositionSize");
}

//+------------------------------------------------------------------+
//| Main recalculation function used on every tick and on entry/SL   |
//| line drag                                                        |
//+------------------------------------------------------------------+
void RecalculatePositionSize()
{
   if (EntryLevel - StopLossLevel == 0) return;
   
   // Need to initialize reference pair because we couldn't do it in init() as the there was no connection to account
   if ((AccountInfoString(ACCOUNT_CURRENCY) != QuoteCurrency) && (ReferencePair == ""))
   {
      if (AccountInfoString(ACCOUNT_CURRENCY) == "") return;
      InitializeReferencePair();
   }
   
   double tEntryLevel = ObjectGetDouble(0, "EntryLine", OBJPROP_PRICE);
   double tStopLossLevel = ObjectGetDouble(0, "StopLossLine", OBJPROP_PRICE);
   ObjectSetString(0, "Entry", OBJPROP_TEXT, "Entry Lvl:    " + DoubleToString(tEntryLevel, _Digits));
   ObjectSetString(0, "StopLoss", OBJPROP_TEXT, "Stop-Loss:    " + DoubleToString(tStopLossLevel, _Digits));

   StopLoss = MathAbs(tEntryLevel - tStopLossLevel);

   if (UseEquityInsteadOfBalance) Size = AccountInfoDouble(ACCOUNT_EQUITY);
   else Size = AccountInfoDouble(ACCOUNT_BALANCE);
   ObjectSetString(0, "AccountSize", OBJPROP_TEXT, "Acc. " + SizeText + ": " + DoubleToString(Size, 2));

   if (!UseMoneyInsteadOfPercentage) RiskMoney = Size * Risk / 100;
   else RiskMoney = MoneyRisk;
   ObjectSetString(0, "RiskMoney", OBJPROP_TEXT, "Risk, money:  " + DoubleToString(RiskMoney, 2));

   if (ReferenceType != -1)
   {
      ReferencePrice = SymbolInfoDouble(ReferencePair, ReferenceType);
      ObjectSetString(0, "ReferencePair", OBJPROP_TEXT, ReferencePair + " " + ModeText + ":   " + DoubleToString(ReferencePrice, _Digits));
   
      if (ReferenceType == SYMBOL_ASK) UnitCost = 1 / ReferencePrice;
	   else if (ReferenceType == SYMBOL_BID) UnitCost = ReferencePrice;
   }

   PositionSize = (RiskMoney / StopLoss) / 100000 / UnitCost;
   
   ObjectSetString(0, "PositionSize", OBJPROP_TEXT, "Pos. Size:    " + DoubleToString(PositionSize, 2));
}

//+------------------------------------------------------------------+
//| Object dragging handler                                          |
//+------------------------------------------------------------------+
void OnChartEvent(const int id,         // Event ID
                  const long& lparam,   // Parameter of type long event
                  const double& dparam, // Parameter of type double event
                  const string& sparam  // Parameter of type string events
)
{
   if (id != CHARTEVENT_OBJECT_DRAG) return;
   if ((sparam != "EntryLine") && (sparam != "StopLossLine")) return;
   RecalculatePositionSize();
}

int OnCalculate(const int rates_total,      // size of the price[] array
                 const int prev_calculated,  // bars handled on a previous call
                 const int begin,            // where the significant data start from
                 const double& price[]       // array to calculate
)
{
   RecalculatePositionSize();
   return(rates_total);
}
//+------------------------------------------------------------------+

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