价格行为分析工具包开发（第二部分）：分析注释脚本·进阶篇
📊

价格行为分析工具包开发（第二部分）：分析注释脚本·进阶篇

（2/3）·手动切图找前日高低点和量能对比太耗时？一个脚本把核心盘面信息压成图表注释

实战向进阶 第 2/3 篇
不少交易者还在手动翻前日 K 线抄高低点、肉眼比今天和昨天的成交量，几张图下来决策窗口早过了。把这类重复劳动交给脚本，才不会在收集数据阶段就丢掉先手。
本章目录
  1. 把前一日盘面塞进MT5脚本
  2. 用前日高低与量能画出生死线
  3. 把前一日判定结果打印到图表
  4. 在 MetaEditor 里把前日高低点脚本化

「把前一日盘面塞进MT5脚本」

做日内决策的人，往往卡在「昨天到底发生了什么」这件事上——高低点、开盘收盘、成交量，手动翻日线再记下来太慢。下面这段 MQ5 脚本直接把这些关键字段抓出来，往当前图表上贴一张表，并顺手标出支撑阻力线，适合开盘前花 30 秒过一遍。 脚本用 iBarShift 定位前一日的日线 bar，再取 iHigh / iLow / iOpen / iClose / iVolume。注意 prevDayIndex 若返回 -1 会直接 Print 报错并 return，所以历史数据不足（比如周一跑周五前的数据缺失）时不会瞎画。 输入参数里 TableXOffset=10、TableYOffset=50 控制表格左上角坐标，SupportColor 默认绿、ResistanceColor 默认红。你复制进 MT5 后，改这两个 color 就能让支撑阻力线配合自己的模板色，不至于和已有对象重叠看花眼。外汇与贵金属波动受杠杆放大，脚本只做展示不做下单，实盘仍属高风险。

MQL5 / C++
class=class="str">"cmt">//+------------------------------------------------------------------+
class=class="str">"cmt">//|                                                                 ACS.mq5 |
class=class="str">"cmt">//|                     Copyright class="num">2024, MetaQuotes Software Corp. |
class=class="str">"cmt">//|                                         [MQL5官方文档] |
class=class="str">"cmt">//+------------------------------------------------------------------+
class="macro">#class="kw">property copyright   "class="num">2024, MetaQuotes Software Corp."
class="macro">#class="kw">property link        "[MQL5官方文档]
class="macro">#class="kw">property description "Script that displays previous day metrics on the current chart and predicts market direction."
class="macro">#class="kw">property version     "class="num">1.0"
class="macro">#include <Trade\Trade.mqh>
class=class="str">"cmt">//+------------------------------------------------------------------+
class=class="str">"cmt">//| Input parameters                                                |
class=class="str">"cmt">//+------------------------------------------------------------------+
input class="type">class="kw">color TableTextColor = clrBlue; class=class="str">"cmt">// Text class="type">class="kw">color for the table
input class="type">int   TableXOffset   = class="num">10;      class=class="str">"cmt">// X offset for the table
input class="type">int   TableYOffset   = class="num">50;      class=class="str">"cmt">// Y offset for the table
input class="type">class="kw">color SupportColor = clrGreen; class=class="str">"cmt">// Color for the support line
input class="type">class="kw">color ResistanceColor = clrRed; class=class="str">"cmt">// Color for the resistance line
class=class="str">"cmt">//+------------------------------------------------------------------+
class=class="str">"cmt">//| Global variables                                                |
class=class="str">"cmt">//+------------------------------------------------------------------+
class="type">class="kw">double prevDayHigh, prevDayLow, prevDayOpen, prevDayClose, prevDayVolume;
class="type">class="kw">double currentDayVolume;
class="type">class="kw">double keySupport, keyResistance; class=class="str">"cmt">// Initialized but will be calculated
class=class="str">"cmt">//+------------------------------------------------------------------+
class=class="str">"cmt">//| Main function                                                   |
class=class="str">"cmt">//+------------------------------------------------------------------+
class="type">void OnStart()
  {
class=class="str">"cmt">//--- Get previous day&class="macro">#x27;s data
   class="type">int prevDayIndex = iBarShift(NULL, PERIOD_D1, iTime(NULL, PERIOD_D1, class="num">1));
   if(prevDayIndex == -class="num">1)
     {
      Print("Error retrieving previous day&class="macro">#x27;s data.");
      class="kw">return;
     }
   prevDayHigh     = iHigh(NULL, PERIOD_D1, prevDayIndex);

◍ 用前日高低与量能画出生死线

把前一日 K 线的基础数据抓出来，是日内区间交易的第一道工序。下面这段代码用 iLow / iOpen / iClose / iVolume 在日线周期上取 prevDayIndex 对应的低、开、收、量，再用 iVolume 取当日（索引 0）成交量，两个数字的差就是日内情绪的温度计。 prevDayLow = iLow(NULL, PERIOD_D1, prevDayIndex); prevDayOpen = iOpen(NULL, PERIOD_D1, prevDayIndex); prevDayClose = iClose(NULL, PERIOD_D1, prevDayIndex); prevDayVolume = iVolume(NULL, PERIOD_D1, prevDayIndex); //--- Get today's volume currentDayVolume = iVolume(NULL, PERIOD_D1, 0); // Current day's volume //--- Calculate key support and resistance keySupport = prevDayLow; // Support level can be set to the previous day's low keyResistance = prevDayHigh; // Resistance level can be set to the previous day's high //--- Manage existing lines (if any) //ObjectDelete("SupportLine"); //ObjectDelete("ResistanceLine"); //--- Create support line if(!ObjectCreate(0, "SupportLine", OBJ_HLINE, 0, 0, keySupport)) { Print("Failed to create SupportLine"); } ObjectSetInteger(0, "SupportLine", OBJPROP_COLOR, SupportColor); ObjectSetInteger(0, "SupportLine", OBJPROP_WIDTH, 2); // Set the width of the line //--- Create resistance line if(!ObjectCreate(0, "ResistanceLine", OBJ_HLINE, 0, 0, keyResistance)) { Print("Failed to create ResistanceLine"); } ObjectSetInteger(0, "ResistanceLine", OBJPROP_COLOR, ResistanceColor); ObjectSetInteger(0, "ResistanceLine", OBJPROP_WIDTH, 2); // Set the width of the line //--- Determine the day's nature (Bullish or Bearish) string marketNature; if(prevDayClose > prevDayOpen) { marketNature = "Bullish"; } else if(prevDayClose < prevDayOpen) { marketNature = "Bearish"; } else { marketNature = "Neutral"; } //--- Compare volumes and determine market sentiment string volumeCommentary; if(currentDayVolume > prevDayVolume) { volumeCommentary = "Current day volume is higher than previous day volume. Bullish sentiment may continue."; } else if(currentDayVolume < prevDayVolume) { volumeCommentary = "Current day volume is lower than previous day volume. Bearish sentiment may follow."; } else { volumeCommentary = "Current day volume is equal to previous day volume. Market sentiment remains uncertain."; } //--- Generate market movement commentary string marketCommentary; if(marketNature == "Bullish") { 逐行拆解：iLow(NULL, PERIOD_D1, prevDayIndex) 中 NULL 代表当前图表品种，PERIOD_D1 锁定日线，prevDayIndex 通常是 1（昨天）；keySupport 直接赋前日低价，keyResistance 用前日高价，两根 OBJ_HLINE 水平线靠 ObjectCreate 推到图上，线宽写死 2、颜色由外部变量接。 市场性质靠 prevDayClose 与 prevDayOpen 比大小：收高于开判 Bullish，收低于开判 Bearish，相等则 Neutral。量能比较更直白——currentDayVolume 大于 prevDayVolume 时，脚本倾向认为多头情绪可能延续；低于则空头情绪可能跟进；相等就标不确定。外汇与贵金属波动受杠杆放大，这套判定只是概率倾向，实盘须自担高风险。 把这段直接塞进 EA 的 OnTick 或独立脚本里跑，打开 XAUUSD 的 MT5 日线图，就能看到前日高低自动划线。若发现 SupportLine 没出现，先查 Print 里的 Failed 报错，多半是对象名冲突或图表权限问题。

MQL5 / C++
prevDayLow      = iLow(NULL, PERIOD_D1, prevDayIndex);
prevDayOpen     = iOpen(NULL, PERIOD_D1, prevDayIndex);
prevDayClose    = iClose(NULL, PERIOD_D1, prevDayIndex);
prevDayVolume   = iVolume(NULL, PERIOD_D1, prevDayIndex);
class=class="str">"cmt">//--- Get today&class="macro">#x27;s volume
currentDayVolume = iVolume(NULL, PERIOD_D1, class="num">0); class=class="str">"cmt">// Current day&class="macro">#x27;s volume
class=class="str">"cmt">//--- Calculate key support and resistance
keySupport = prevDayLow;   class=class="str">"cmt">// Support level can be set to the previous day&class="macro">#x27;s low
keyResistance = prevDayHigh; class=class="str">"cmt">// Resistance level can be set to the previous day&class="macro">#x27;s high
class=class="str">"cmt">//--- Manage existing lines(if any)
class=class="str">"cmt">//ObjectDelete("SupportLine");
class=class="str">"cmt">//ObjectDelete("ResistanceLine");
class=class="str">"cmt">//--- Create support line
if(!ObjectCreate(class="num">0, "SupportLine", OBJ_HLINE, class="num">0, class="num">0, keySupport))
   {
      Print("Failed to create SupportLine");
   }
ObjectSetInteger(class="num">0, "SupportLine", OBJPROP_COLOR, SupportColor);
ObjectSetInteger(class="num">0, "SupportLine", OBJPROP_WIDTH, class="num">2); class=class="str">"cmt">// Set the width of the line
class=class="str">"cmt">//--- Create resistance line
if(!ObjectCreate(class="num">0, "ResistanceLine", OBJ_HLINE, class="num">0, class="num">0, keyResistance))
   {
      Print("Failed to create ResistanceLine");
   }
ObjectSetInteger(class="num">0, "ResistanceLine", OBJPROP_COLOR, ResistanceColor);
ObjectSetInteger(class="num">0, "ResistanceLine", OBJPROP_WIDTH, class="num">2); class=class="str">"cmt">// Set the width of the line
class=class="str">"cmt">//--- Determine the day&class="macro">#x27;s nature(Bullish or Bearish)
class="type">class="kw">string marketNature;
if(prevDayClose > prevDayOpen)
   {
      marketNature = "Bullish";
   }
else
   if(prevDayClose < prevDayOpen)
      {
       marketNature = "Bearish";
      }
   else
      {
       marketNature = "Neutral";
      }
class=class="str">"cmt">//--- Compare volumes and determine market sentiment
class="type">class="kw">string volumeCommentary;
if(currentDayVolume > prevDayVolume)
   {
      volumeCommentary = "Current day volume is higher than previous day volume. Bullish sentiment may class="kw">continue.";
   }
else
   if(currentDayVolume < prevDayVolume)
      {
       volumeCommentary = "Current day volume is lower than previous day volume. Bearish sentiment may follow.";
      }
   else
      {
       volumeCommentary = "Current day volume is equal to previous day volume. Market sentiment remains uncertain.";
      }
class=class="str">"cmt">//--- Generate market movement commentary
class="type">class="kw">string marketCommentary;
if(marketNature == "Bullish")
   {

把前一日判定结果打印到图表

这段逻辑收口在「市场性质」的分支赋值：若前一日收高，marketCommentary 记为偏多情绪、提示关注延续形态；若收低则记为偏空、建议顺着趋势考虑仓位；若持平则提示中性、等待突破。外汇与贵金属波动受杠杆放大，这类文字只是概率倾向，不能直接当入场指令。 真正落地的是把前面算出的 Open/Close/High/Low 以及两天成交量、支撑阻力，用 DoubleToString 统一成固定小数位（价格 5 位、成交量 0 位）拼进 textOutput，最后一句 Comment(textOutput) 直接把整块字幕打到图表左上。你在 MT5 里按 F4 粘这段、编译后拖到 XAUUSD 的 H1，就能看到前日分析常驻屏上。 注意成交量字段用的是 prevDayVolume 与 currentDayVolume 两个变量，若你前期没给它们赋过值，图表会显示 0 或乱码——这是最常见的「代码能跑但没数」坑。

MQL5 / C++
  marketCommentary = "The market closed higher yesterday, indicating bullish sentiment. Look for potential continuation patterns.";
   }
  else
   if(marketNature == "Bearish")
    {
     marketCommentary = "The market closed lower yesterday, indicating bearish sentiment. Consider taking positions that align with this trend.";
    }
   else
    {
     marketCommentary = "The market showed neutrality with little change. Watch for potential breakout opportunities.";
    }
class=class="str">"cmt">//--- Display the information in a table-like format on the chart
   class="type">class="kw">string textOutput = "Previous Day Analytics:\n";
   textOutput += "Open: " + DoubleToString(prevDayOpen, class="num">5) + "\n";
   textOutput += "Close: " + DoubleToString(prevDayClose, class="num">5) + "\n";
   textOutput += "High: " + DoubleToString(prevDayHigh, class="num">5) + "\n";
   textOutput += "Low: " + DoubleToString(prevDayLow, class="num">5) + "\n";
   textOutput += "Volume(Prev Day): " + DoubleToString(prevDayVolume, class="num">0) + "\n";
   textOutput += "Volume(Current Day): " + DoubleToString(currentDayVolume, class="num">0) + "\n";
   textOutput += "Support: " + DoubleToString(keySupport, class="num">5) + "\n";
   textOutput += "Resistance: " + DoubleToString(keyResistance, class="num">5) + "\n";
   textOutput += "\nMarket Nature: " + marketNature + "\n";
   textOutput += volumeCommentary + "\n";
   textOutput += marketCommentary;
class=class="str">"cmt">// Draw the text output on the chart
   Comment(textOutput);
  }

「在 MetaEditor 里把前日高低点脚本化」

用 MetaEditor 建一个脚本（Script）而不是 EA，是因为它只跑一次、不常驻，适合做「抓前日数据 + 画线 + 图表注释」这种轻量任务。脚本头部先写 #property 的 copyright、link、version，版本号留 1.0 方便你以后改完追踪变更，不至于把旧线稿和新逻辑搞混。 引入 <Trade\Trade.mqh> 后，把可调项丢进 input：支撑线颜色默认 clrGreen、阻力线 clrRed、表格文字 clrBlue，以及 X/Y 偏移 10 和 50。这样不用动底层代码，在 MT5 参数面板就能改配色和位置，黄金和欧美不同品种用不同颜色也好分辨。 主函数 OnStart 里先用 iBarShift 配 iTime(NULL, PERIOD_D1, 1) 定位「最后一个完整日 K」的索引；若返回 -1 就 Print 报错并 return，避免拿空数据往下算。随后 iHigh/iLow/iOpen/iClose/iVolume 把前日 OHLC 和成交量取回来，当日量用 iVolume(...,0)。 支撑直接等于前日最低、阻力等于前日最高，ObjectCreate 画 OBJ_HLINE 失败就打印。市场性质用 prevDayClose 与 prevDayOpen 比大小判 Bullish/Bearish/Neutral；当日量大于前日量时注释写「higher」、小于写「lower」。外汇和贵金属波动大、杠杆高，这类前日区间只作参考，实际突破概率随新闻面变化。 下面这段是核心片段，逐行看：#property 三行是脚本元信息；#include 引入交易库；五个 input 定义用户可调参数；全局 double 存前日与当日量价；OnStart 内 iBarShift 找前日索引，失败返 -1 即退出；之后取数、赋值 keySupport/Resistance、画水平线、判涨跌和量能。复制进 MetaEditor 按 F7 编译，拖到 XAUUSD 日图就能看到线和注释。

MQL5 / C++
class="macro">#class="kw">property copyright "class="num">2024, MetaQuotes Software Corp"
class="macro">#class="kw">property link      "[MQL5官方文档]
class="macro">#class="kw">property version   "class="num">1.0"
class="macro">#include <Trade\Trade.mqh>
input class="type">class="kw">color TableTextColor = clrBlue; class=class="str">"cmt">// Text class="type">class="kw">color for the table
input class="type">int   TableXOffset   = class="num">10;      class=class="str">"cmt">// X offset for the table
input class="type">int   TableYOffset   = class="num">50;      class=class="str">"cmt">// Y offset for the table
input class="type">class="kw">color SupportColor = clrGreen; class=class="str">"cmt">// Color for the support line
input class="type">class="kw">color ResistanceColor = clrRed; class=class="str">"cmt">// Color for the resistance line
class="type">class="kw">double prevDayHigh, prevDayLow, prevDayOpen, prevDayClose, prevDayVolume;
class="type">class="kw">double currentDayVolume;
class="type">class="kw">double keySupport, keyResistance; class=class="str">"cmt">// Initialized but will be calculated
class="type">void OnStart()
class="type">int prevDayIndex = iBarShift(NULL, PERIOD_D1, iTime(NULL, PERIOD_D1, class="num">1));
if (prevDayIndex == -class="num">1)
{
   Print("Error retrieving previous day&class="macro">#x27;s data.");
   class="kw">return;
}
prevDayHigh     = iHigh(NULL, PERIOD_D1, prevDayIndex);
prevDayLow      = iLow(NULL, PERIOD_D1, prevDayIndex);
prevDayOpen     = iOpen(NULL, PERIOD_D1, prevDayIndex);
prevDayClose    = iClose(NULL, PERIOD_D1, prevDayIndex);
prevDayVolume   = iVolume(NULL, PERIOD_D1, prevDayIndex);
currentDayVolume = iVolume(NULL, PERIOD_D1, class="num">0); class=class="str">"cmt">// Current day&class="macro">#x27;s volume
keySupport = prevDayLow;   class=class="str">"cmt">// Support level can be set to the previous day&class="macro">#x27;s low
keyResistance = prevDayHigh; class=class="str">"cmt">// Resistance level can be set to the previous day&class="macro">#x27;s high
if (!ObjectCreate(class="num">0, "SupportLine", OBJ_HLINE, class="num">0, class="num">0, keySupport))
{
   Print("Failed to create SupportLine");
}
if (prevDayClose > prevDayOpen)
{
   marketNature = "Bullish";
}
else if (prevDayClose < prevDayOpen)
{
   marketNature = "Bearish";
}
else
{
   marketNature = "Neutral";
}
if (currentDayVolume > prevDayVolume)
{
   volumeCommentary = "Current day volume is higher...";
}
else if (currentDayVolume < prevDayVolume)
{
   volumeCommentary = "Current day volume is lower...";
}
让小布替你跑这套
这些诊断小布盯盘的 AIGC 已内置，打开对应品种页即可看到前日枢轴与量能对比，不必自己挂脚本也能快速扫盘。

常见问题

多数来自前日高低点取整与 broker 报价偏移，可在输入参数里关掉舍入或校正点差源。
只能说概率倾向强化当前方向，外汇贵金属高杠杆下仍可能假突破，需结合价格行为结构判断。
能，小布盯盘品种页已内置前日开盘收盘、量能对比与关键位标注，省去自己编译脚本的步骤。
独立脚本一次性跑完退出，适合快照注释；指标常驻重绘，适合动态跟踪，本篇用的是前者。

相关阅读

🧰
系列基础
价格行为分析工具包开发·基础篇
 ⚙️
系列实战
价格行为分析工具包开发·实战篇

小布盯盘 · 交易者自己的 价格行为学 + AIGC 分析工具。小布知识库 持续更新硬核交易干货。

本文由人工智能（AIGC）基于价格行为学进行深度分析，仅为技术方法论的探讨与分享，不构成任何形式的投资建议或交易指令。外汇保证金及贵金属交易具有高风险，并不适合所有投资者；过往表现不代表未来结果，请结合自身风险承受能力独立决策。

© 2026 小布盘 unyet.cn