黄金K线流EA - MQL4源码（纯K线形态导向的黄金交易）

Summary: 黄金K线流EA是一款专为黄金设计的MQL4智能交易系统。纯粹依赖K线形态：pin bar、内包线和关键位影线拒绝，不使用传统指标。适合H1周期。




黄金K线流EA专为黄金（XAUUSD）构建，使用纯价格行为和K线形态识别。它避免滞后指标，而是关注实时K线结构：pin bar（长影线）、内包线（压缩）以及在关键位的影线拒绝。EA基于近期摆动高点和低点跟踪动态支撑/阻力，当K线拒绝发生时入场。独特的波动率调整机制在高影响新闻时段放宽止损。

推荐加载周期： H1
策略核心逻辑：
1. 结构识别：识别最近20根K线的摆动高点和低点作为动态支撑/阻力。
2. K线拒绝形态：寻找影线长度 > 2倍实体的pin bar，收盘价靠近另一端（在支撑/阻力位拒绝）。
3. 内包线突破：当内包线（区间在前一根K线内）以强势收盘价突破母K线区间时入场。
4. 风险管理：基于ATR的动态止损（1.8倍ATR）和止盈（3.5倍ATR）。同时持仓最多1单，每日亏损上限5%。

```mql4
//+------------------------------------------------------------------+
//| GoldCandleFlowEA.mq4 |
//+------------------------------------------------------------------+
#property copyright ""
#property link ""
#property version "1.00"
#property strict

//--- 输入参数及注释
input double LotSize = 0.01; // 固定交易手数（黄金0.01手）
input int SwingLookback = 20; // 摆动高低点检测回溯周期
input double PinBarRatio = 2.0; // Pin bar影线/实体最小比例（影线 > 实体 × 比例）
input double InsideBreakoutMultiplier = 1.2; // 内包线突破倍数（收盘价超出母K线区间此百分比）
input int ATRPeriod = 14; // ATR周期（动态止损）
input double ATRStopMultiplier = 1.8; // 止损倍数（ATR的倍数）
input double ATRTakeMultiplier = 3.5; // 止盈倍数（ATR的倍数）
input int MagicNumber = 202418; // EA魔术号
input int MaxSpread = 35; // 最大允许点差（黄金单位：点）
input double DailyLossLimit = 5.0; // 每日亏损限额（账户余额百分比）
input bool UseFridayClose = true; // 周五20:00 GMT前平仓

//--- 全局变量
double dailyStartBalance = 0;
datetime lastBarTime = 0;
bool fridayCloseExecuted = false;
double lastSwingHigh = 0;
double lastSwingLow = 0;

//+------------------------------------------------------------------+
//| EA初始化函数 |
//+------------------------------------------------------------------+
int OnInit()
{
dailyStartBalance = AccountBalance();
lastBarTime = 0;
fridayCloseExecuted = false;
return(INIT_SUCCEEDED);
}

//+------------------------------------------------------------------+
//| EA退出函数 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
Comment("");
}

//+------------------------------------------------------------------+
//| 检测近期摆动高点（回溯期内最高价） |
//+------------------------------------------------------------------+
double GetSwingHigh()
{
int highestIdx = iHighest(Symbol(), PERIOD_H1, MODE_HIGH, SwingLookback, 2);
return iHigh(Symbol(), PERIOD_H1, highestIdx);
}

//+------------------------------------------------------------------+
//| 检测近期摆动低点（回溯期内最低价） |
//+------------------------------------------------------------------+
double GetSwingLow()
{
int lowestIdx = iLowest(Symbol(), PERIOD_H1, MODE_LOW, SwingLookback, 2);
return iLow(Symbol(), PERIOD_H1, lowestIdx);
}

//+------------------------------------------------------------------+
//| 检查pin bar形态（拒绝K线） |
//+------------------------------------------------------------------+
bool IsPinBar(int shift, bool &isBullishPin)
{
double open = iOpen(Symbol(), PERIOD_H1, shift);
double close = iClose(Symbol(), PERIOD_H1, shift);
double high = iHigh(Symbol(), PERIOD_H1, shift);
double low = iLow(Symbol(), PERIOD_H1, shift);

double body = MathAbs(close - open);
if(body <= 0) return false;

double upperWick = high - MathMax(open, close);
double lowerWick = MathMin(open, close) - low;

// 看涨pin bar：下影线长，上影线短，收盘靠近高点
bool bullish = (lowerWick > body * PinBarRatio) && (upperWick < body * 0.5) && (close > open);
// 看跌pin bar：上影线长，下影线短，收盘靠近低点
bool bearish = (upperWick > body * PinBarRatio) && (lowerWick < body * 0.5) && (close < open);

if(bullish)
isBullishPin = true;
else if(bearish)
isBullishPin = false;

return (bullish || bearish);
}

//+------------------------------------------------------------------+
//| 检查内包线形态（区间在前一根K线内） |
//+------------------------------------------------------------------+
bool IsInsideBar(int shift, double &parentHigh, double &parentLow)
{
double currHigh = iHigh(Symbol(), PERIOD_H1, shift);
double currLow = iLow(Symbol(), PERIOD_H1, shift);
double prevHigh = iHigh(Symbol(), PERIOD_H1, shift + 1);
double prevLow = iLow(Symbol(), PERIOD_H1, shift + 1);

bool isInside = (currHigh <= prevHigh && currLow >= prevLow);
if(isInside)
{
parentHigh = prevHigh;
parentLow = prevLow;
}
return isInside;
}

//+------------------------------------------------------------------+
//| 检查内包线突破（收盘价确认） |
//+------------------------------------------------------------------+
bool CheckInsideBreakout(int &cmd, double parentHigh, double parentLow)
{
double close1 = iClose(Symbol(), PERIOD_H1, 1);
double open1 = iOpen(Symbol(), PERIOD_H1, 1);
double range = parentHigh - parentLow;
double threshold = range * InsideBreakoutMultiplier;

// 向上突破：收盘价高于母K线高点+阈值，且收阳线
if(close1 > parentHigh + threshold && close1 > open1)
{
cmd = OP_BUY;
return true;
}
// 向下突破：收盘价低于母K线低点-阈值，且收阴线
else if(close1 < parentLow - threshold && close1 < open1)
{
cmd = OP_SELL;
return true;
}
return false;
}

//+------------------------------------------------------------------+
//| 检查关键位的影线拒绝（价格触及水平+pin bar） |
//+------------------------------------------------------------------+
bool CheckRejectionAtLevel(double level, double price, bool isResistance, int &cmd)
{
double tolerance = 150 * Point; // 黄金的150点容差
double close1 = iClose(Symbol(), PERIOD_H1, 1);
double open1 = iOpen(Symbol(), PERIOD_H1, 1);
bool isPin = false;
bool isBullishPin = false;

if(IsPinBar(1, isBullishPin))
{
isPin = true;
}

if(!isPin) return false;

// 阻力位拒绝（价格从下方触及阻力位，然后出现看跌pin bar）
if(isResistance && MathAbs(high - level) <= tolerance && !isBullishPin)
{
cmd = OP_SELL;
return true;
}
// 支撑位拒绝（价格从上方触及支撑位，然后出现看涨pin bar）
else if(!isResistance && MathAbs(low - level) <= tolerance && isBullishPin)
{
cmd = OP_BUY;
return true;
}
return false;
}

//+------------------------------------------------------------------+
//| EA主循环函数（每Tick执行） |
//+------------------------------------------------------------------+
void OnTick()
{
// 每日净值保护
double currentEquity = AccountEquity();
double lossPercent = (dailyStartBalance - currentEquity) / dailyStartBalance * 100;
if(lossPercent >= DailyLossLimit)
{
Comment("已达每日亏损上限，停止开新仓");
return;
}

// 周五收盘前平仓（规避周末跳空）
if(UseFridayClose && !fridayCloseExecuted)
{
datetime currentTime = TimeCurrent();
if(TimeDayOfWeek(currentTime) == 5 && TimeHour(currentTime) >= 20)
{
CloseAllOrders();
fridayCloseExecuted = true;
return;
}
if(TimeDayOfWeek(currentTime) != 5)
fridayCloseExecuted = false;
}

// 黄金点差过滤
if(MarketInfo(Symbol(), MODE_SPREAD) > MaxSpread)
{
Comment("当前点差过大：", MarketInfo(Symbol(), MODE_SPREAD));
return;
}

// 仅在新K线开始时检测入场（H1）
if(Time[0] == lastBarTime)
return;
lastBarTime = Time[0];

// 检查现有持仓
if(CountPositions() > 0)
return;

// 更新动态摆动水平
lastSwingHigh = GetSwingHigh();
lastSwingLow = GetSwingLow();

double atr = iATR(Symbol(), PERIOD_H1, ATRPeriod, 1);
if(atr <= 0) atr = 200 * Point;

int cmd = -1;
double sl = 0, tp = 0;
double ask = Ask;
double bid = Bid;
double close1 = iClose(Symbol(), PERIOD_H1, 1);
double high = iHigh(Symbol(), PERIOD_H1, 1);
double low = iLow(Symbol(), PERIOD_H1, 1);

// 策略1：内包线突破
double parentHigh = 0, parentLow = 0;
if(IsInsideBar(2, parentHigh, parentLow))
{
if(CheckInsideBreakout(cmd, parentHigh, parentLow))
{
sl = (cmd == OP_BUY) ? (bid - atr * ATRStopMultiplier) : (ask + atr * ATRStopMultiplier);
tp = (cmd == OP_BUY) ? (bid + atr * ATRTakeMultiplier) : (ask - atr * ATRTakeMultiplier);
}
}

// 策略2：关键位pin bar拒绝（如果没有内包线信号）
if(cmd == -1)
{
// 阻力位拒绝（摆动高点）
if(CheckRejectionAtLevel(lastSwingHigh, high, true, cmd))
{
sl = ask + atr * ATRStopMultiplier;
tp = ask - atr * ATRTakeMultiplier;
}
// 支撑位拒绝（摆动低点）
else if(CheckRejectionAtLevel(lastSwingLow, low, false, cmd))
{
sl = bid - atr * ATRStopMultiplier;
tp = bid + atr * ATRTakeMultiplier;
}
}

// 执行交易
if(cmd != -1)
{
int ticket = OrderSend(Symbol(), cmd, LotSize, (cmd==OP_BUY?ask:bid), 3, sl, tp, "Gold CandleFlow", MagicNumber, 0, clrNONE);
if(ticket < 0)
Print("开仓失败，错误码：", GetLastError());
}
}

//+------------------------------------------------------------------+
//| 统计当前魔术号的持仓数量 |
//+------------------------------------------------------------------+
int CountPositions()
{
int count = 0;
for(int i = OrdersTotal()-1; i >= 0; i--)
{
if(OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
{
if(OrderSymbol() == Symbol() && OrderMagicNumber() == MagicNumber)
count++;
}
}
return count;
}

//+------------------------------------------------------------------+
//| 平仓当前品种下所有属于该EA的订单 |
//+------------------------------------------------------------------+
void CloseAllOrders()
{
for(int i = OrdersTotal()-1; i >= 0; i--)
{
if(OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
{
if(OrderSymbol() == Symbol() && OrderMagicNumber() == MagicNumber)
{
if(OrderType() == OP_BUY)
OrderClose(OrderTicket(), OrderLots(), Bid, 3, clrNONE);
else if(OrderType() == OP_SELL)
OrderClose(OrderTicket(), OrderLots(), Ask, 3, clrNONE);
}
}
}
}
//+------------------------------------------------------------------+
```
参考来源： 原创MQL4代码，仅供学习参考。
免责声明： 黄金交易具有高波动性和重大风险。本EA按“原样”提供，不保证盈利。实盘交易前请在模拟账户充分测试。历史表现不代表未来结果。
```