OnTick 交易逻辑

Lesson Overview

In "MQL5 EA Programming Intro" → "EA 逻辑开发", this lesson "OnTick 交易逻辑" builds knowledge you can apply immediately.

OnTick可能在一根bar内被多次触发。若规则每个已收盘bar只评估一次，需要新bar守卫；仍须处理重启、数据缺失和重复信号。 保存最近已处理bar时间→新bar时读取上根→检查数据→生成只读信号→写barID与版本，不接实际订单。 本课作业：同一bar有50个tick，配套日志策略应评估几次？重启后还要防哪种重复？

Core Concepts

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

• ▸OnTick可能在一根bar内被多次触发。若规则每个已收盘bar只评估一次，需要新bar守卫；仍须处理重启、数据缺失和重复信号。
• ▸保存最近已处理bar时间→新bar时读取上根→检查数据→生成只读信号→写barID与版本，不接实际订单。
• ▸本课作业：同一bar有50个tick，配套日志策略应评估几次？重启后还要防哪种重复？

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 "EA 逻辑开发"—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 OnTick 交易逻辑 on your own.