指标与内置函数

Lesson Overview

In "MQL5 EA Programming Intro" → "MQL5 基础", this lesson "指标与内置函数" builds knowledge you can apply immediately.

MQL5的iMA返回指标句柄，CopyBuffer取值需核返回数量与bar偏移。当前bar0会变化，已收盘bar1才符合本例收盘信号定义。 创建句柄→确认数据就绪→CopyBuffer从shift1读取→核返回值→遇不足不产生信号→释放句柄。 本课作业：策略要比较最近两个已收盘SMA值，偏移应读0/1还是1/2？失败时可否用数组默认0？

Core Concepts

These points align with the video walkthrough—take notes as you watch.

• ▸MQL5的iMA返回指标句柄，CopyBuffer取值需核返回数量与bar偏移。当前bar0会变化，已收盘bar1才符合本例收盘信号定义。
• ▸创建句柄→确认数据就绪→CopyBuffer从shift1读取→核返回值→遇不足不产生信号→释放句柄。
• ▸本课作业：策略要比较最近两个已收盘SMA值，偏移应读0/1还是1/2？失败时可否用数组默认0？

Practical Application

After studying, complete the companion practice lesson to move from understanding to doing.

• ▸Follow along in Jupyter or VS Code
• ▸Log how parameter changes affect backtest results
• ▸Submit a reproducible analysis notebook

FAQ

• ▸Q: How does this lesson fit the course? A: Part of "MQL5 基础"—follow the curriculum order.
• ▸Q: What do I need? A: Demo account and notes; quant lessons need a Python environment.
• ▸Q: How do I know I've mastered it? A: Pass the quiz and explain three key points of 指标与内置函数 on your own.