WRB Hidden Gap，WRB隐藏缺口，MetaTrader 免费公式！（指标教程）

WRB Hidden Gap MetaTrader 指标用于检测和标记宽范围的柱体（非常长的柱体）或宽范围的烛身（具有非常长实体的阴阳烛）。此指标可以识别WRB中的隐藏跳空，并区分显示已填补和未填补的隐藏跳空，方便用户一眼识别当前市场状态。当价格首次进入未填补的隐藏跳空或出现新的WRB或隐藏跳空时，用户可选择启用提醒功能。此指标适用于MT4和MT5平台。

输入参数说明：

Timeframe（默认为 PERIOD_CURRENT）: 计算宽幅区间K线（WRB）和隐藏跳空（HG）的时间周期，不能低于当前周期。
UseWholeBars（默认为 false）: 若设置为true，则指标寻找宽范围的柱体而非烛身。
WRB_LookBackBarCount（默认为 3）: 在比较WRB时考虑的历史柱体数量。
WRB_WingDingsSymbol（默认为 115）: 标记WRB的符号，默认为小钻石。
HGcolor：设置各类型隐藏跳空的颜色，包括看涨看跌、已突破和未突破的状态。
HGstyle（默认为 STYLE_SOLID）: 隐藏跳空矩形的线型。
StartCalculationFromBar（默认为 100）: 回顾期内标记宽范围烛身和隐藏跳空的柱体数量。
HollowBoxes（默认为 false）: 若为true，则标记的隐藏跳空矩形为未填充的。
AlertBreachesFromBelow（默认为 true）、AlertBreachesFromAbove（默认为 true）、AlertHG（默认为 false）、AlertWRB（默认为 false）、AlertHGFill（默认为 false）: 各类型提醒的启用设置。
EnableNativeAlerts（默认为 false）、EnableEmailAlerts（默认为 false）、EnablePushAlerts（默认为 false）: 提醒的发送方式，需要在MetaTrader设置邮件和通知。
ObjectPrefix（默认为 "HG_"）: 图表对象的前缀，以便与其他指标兼容。

示例：在EUR/USD日线图表上使用默认设置标记的隐藏跳空。宽范围烛身的WRB条形图内绘制红色菱形框，不同颜色的矩形用于绘制隐藏跳空。未填充的缺口以跨至图表右边缘的矩形显示。此指标不生成交易信号，仅提供价格行为信息，辅助交易者利用其他策略生成的进场和离场信号。隐藏跳空也可作为支撑/阻力区域或价格缺口使用。

部分代码展示


//+------------------------------------------------------------------+
//|                                               WRB-Hidden-Gap.mq4 |
//|                                Copyright © 2009-2024, www.QChaos.com |
//|                                          https://www.qchaos.com/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 量化混沌, www.qchaos.com"
#property link      "https://www.qchaos.com"
#property version   "1.05"
#property strict
#property description "---------------------------------------------"
#property description "EA、指标公式分享"
#property description "EA、指标编写业务承接"
#property description "---------------------------------------------"
#property description "更多资源，关注公众号：量化程序"
#property description "微  信：QChaos001"
#property description "手机号：134-8068-5281"
#property description "---------------------------------------------"

#property description "Identifies Wide Range Bars and Hidden Gaps. Supports MTF."
#property description "WRB and HG definitions are taken from the WRB Analysis Tutorial-1"
#property description "by M.A.Perry from TheStrategyLab.com."

#property indicator_chart_window
#property indicator_buffers 1

#property indicator_color1 clrRed
#property indicator_type1  DRAW_ARROW
#property indicator_label1 "WRB"
#property indicator_width1 3

input ENUM_TIMEFRAMES Timeframe = PERIOD_CURRENT;
input bool UseWholeBars = false;
input int WRB_LookBackBarCount = 3;
input int WRB_WingDingsSymbol = 115;
input color HGcolorNormalBullishUnbreached       = clrDodgerBlue;
input color HGcolorIntersectionBullishUnbreached = clrBlue;
input color HGcolorNormalBearishUnbreached       = clrIndianRed;
input color HGcolorIntersectionBearishUnbreached = clrRed;
input color HGcolorNormalBullishBreached         = clrPowderBlue;
input color HGcolorIntersectionBullishBreached   = clrSlateBlue;
input color HGcolorNormalBearishBreached         = clrLightCoral;
input color HGcolorIntersectionBearishBreached   = clrSalmon;
input ENUM_LINE_STYLE HGstyle = STYLE_SOLID;
input int StartCalculationFromBar = 100;
input bool HollowBoxes = false;
input bool AlertBreachesFromBelow = true;
input bool AlertBreachesFromAbove = true;
input bool AlertHG = false;
input bool AlertWRB = false;
input bool AlertHGFill = false;
input bool EnableNativeAlerts = false;
input bool EnableEmailAlerts = false;
input bool EnablePushAlerts = false;
input string ObjectPrefix = "HG_";

double WRB[];

int totalBarCount = -1;
bool DoAlerts = false;
datetime AlertTimeWRB = 0, AlertTimeHG = 0;
string UnfilledPrefix, FilledPrefix;

int OnInit()
{
    if (PeriodSeconds(Timeframe) < PeriodSeconds())
    {
        Alert("The Timeframe input parameter should be higher or equal to the current timeframe. Switching to current timeframe.");
    }
    
    IndicatorShortName("WRB+HG");

    SetIndexArrow(0, WRB_WingDingsSymbol);
    SetIndexBuffer(0, WRB);
    
    UnfilledPrefix = ObjectPrefix + "UNFILLED_";
    FilledPrefix = ObjectPrefix + "FILLED_";

    if ((EnableNativeAlerts) || (EnableEmailAlerts) || (EnablePushAlerts)) DoAlerts = true;
    
    return INIT_SUCCEEDED;
}

//+------------------------------------------------------------------+
//| Intersect: Checks whether two bars intersect or not.             |
//| Return codes are unused. 0 - no intersection.                    |
//+------------------------------------------------------------------+
int intersect(double H1, double L1, double H2, double L2)
{
    if ((L1 > H2) || (H1 < L2)) return 0;
    if ((H1 >= H2) && (L1 >= L2)) return 1;
    if ((H1 <= H2) && (L1 <= L2)) return 2;
    if ((H1 >= H2) && (L1 <= L2)) return 3;
    if ((H1 <= H2) && (L1 >= L2)) return 4;
    return 0;
}

//+------------------------------------------------------------------+
//| checkHGFilled: Checks if the hidden gap is filled or not.        |
//+------------------------------------------------------------------+
void checkHGFilled(int barNumber)
{
    string Prefix = UnfilledPrefix;

    int L = StringLen(Prefix);
    int obj_total = ObjectsTotal(ChartID(), 0, OBJ_RECTANGLE);
    // Loop over all unfilled boxes.
    for (int i = 0; i < obj_total; i++)
    {
        string ObjName = ObjectName(0, i, 0, OBJ_RECTANGLE);
        if (StringSubstr(ObjName, 0, L) != Prefix) continue;
        
        // Get HG high and low values.
        double box_H = ObjectGet(ObjName, OBJPROP_PRICE1);
        double box_L = ObjectGet(ObjName, OBJPROP_PRICE2);
        color objectColor = (color)ObjectGet(ObjName, OBJPROP_COLOR);
        datetime startTime = (datetime)ObjectGet(ObjName, OBJPROP_TIME1);

        double HGFillPA_H = High[barNumber];
        double HGFillPA_L = Low[barNumber];
        
        if ((HGFillPA_H > box_L) && (HGFillPA_L < box_H)) // Breach, but not necessarily filling.
        {
            // Only color should be updated.
            if (objectColor == HGcolorNormalBullishUnbreached) objectColor = HGcolorNormalBullishBreached;
            else if (objectColor == HGcolorIntersectionBullishUnbreached) objectColor = HGcolorIntersectionBullishBreached;
            else if (objectColor == HGcolorNormalBearishUnbreached) objectColor = HGcolorNormalBearishBreached;
            else if (objectColor == HGcolorIntersectionBearishUnbreached) objectColor = HGcolorIntersectionBearishBreached;
            ObjectSetInteger(ChartID(), ObjName, OBJPROP_COLOR, objectColor);
        }
        int j = 0;
        while ((intersect(High[barNumber + j], Low[barNumber + j], box_H, box_L) != 0) && (barNumber + j < Bars) && (startTime < Time[barNumber + j]))
        {
            if (High[barNumber + j] > HGFillPA_H)  HGFillPA_H = High[barNumber + j];
            if (Low[barNumber + j]  < HGFillPA_L)  HGFillPA_L = Low[barNumber + j];
            if ((HGFillPA_H > box_H) && (HGFillPA_L < box_L))
            {
                ObjectDelete(ObjName);
                string ObjectText = FilledPrefix + TimeToString(startTime, TIME_DATE | TIME_MINUTES); // Recreate as a filled box.
                ObjectCreate(ObjectText, OBJ_RECTANGLE, 0, startTime, box_H, Time[barNumber], box_L);
                ObjectSetInteger(ChartID(), ObjectText, OBJPROP_STYLE, HGstyle);
                // Filled HG is necessarilly a breached one.
                if (objectColor == HGcolorNormalBullishUnbreached) objectColor = HGcolorNormalBullishBreached;
                else if (objectColor == HGcolorIntersectionBullishUnbreached) objectColor = HGcolorIntersectionBullishBreached;
                else if (objectColor == HGcolorNormalBearishUnbreached) objectColor = HGcolorNormalBearishBreached;
                else if (objectColor == HGcolorIntersectionBearishUnbreached) objectColor = HGcolorIntersectionBearishBreached;
                ObjectSetInteger(ChartID(), ObjectText, OBJPROP_COLOR, objectColor);
                ObjectSetInteger(ChartID(), ObjectText, OBJPROP_BACK, !HollowBoxes);
                if ((AlertHGFill) && (IndicatorCounted() > 0)) // Don't alert on old fillings.
                {
                    string Text = "WRB Hidden Gap: " + Symbol() + " - " + StringSubstr(EnumToString((ENUM_TIMEFRAMES)Period()), 7) + " - HG " + TimeToString(startTime, TIME_DATE | TIME_MINUTES) + " Filled.";
                    if (EnableNativeAlerts) Alert(Text);
                    if (EnableEmailAlerts) SendMail("WRB HG Alert", Text);
                    if (EnablePushAlerts) SendNotification(Text);
                }
                break;
            }
            j++;
        }
    }
}