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Martingle

MQL5 专家 自动交易/指标调试

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File Name: ReverseOrderEA_Description.txt
Purpose: Describes the functionality of the MQL5 Expert Advisor ReverseOrderEA.mq5

---

EA Name:
ReverseOrderEA.mq5
Automated MQL5 Expert Advisor that places reverse pending orders based on existing open trades.

---

Functionality Overview:

This EA monitors all open positions on the current chart symbol and automatically places a reverse pending order (Buy Stop or Sell Stop) based on the trade’s stop loss (SL). The logic ensures:

- Only one reverse pending order per open position.
- Reverse orders are deleted and re-placed if the SL, lot size, or entry changes.
- Reverse orders are canceled if the original position is closed (manually or otherwise).
- Reverse lot size is calculated using a multiplier (default 1.0).

---

Reverse Order Logic:

- BUY position:
  - Reverse = Sell Stop at the SL.
  - SL = original entry.
  - TP = SL − (2 × risk).

- SELL position:
  - Reverse = Buy Stop at the SL.
  - SL = original entry.
  - TP = SL + (2 × risk).

---

Key Components:

✅ CheckAndPlaceReversePendingOrder()
- Loops through open positions.
- Calculates reverse price, SL, TP.
- Ensures only one reverse order exists per position.
- Calls DeleteReverseIfChanged() if parameters differ.
- Places new pending orders with appropriate comment format.

🗑️ DeleteReverseIfChanged()
- Deletes existing reverse pending orders if:
  - SL, lot size, or entry price has changed.

🚫 CancelUnusedReverseOrders()
- Deletes reverse orders if the original position is closed or no longer exists.

---

Comment Format:

All reverse orders include a comment:
Reverse_<ticketNumber>_<SL>
This enables matching each pending order to its original trade and verifying its parameters.

---

Inputs:

- lotMultiplier — Multiplier for reverse lot size (e.g., 2 = double lot size).
- magicNumber — Unique magic number to track reverse orders only.
- reversePrefix — Text prefix in order comment (default "Reverse").

---

OnTick Logic:

1. CheckAndPlaceReversePendingOrder()
2. CancelUnusedReverseOrders()

Both are called every tick to keep reverse order logic accurate and synchronized.

---

Notes:

- Works only with positions on the current chart symbol.
- Requires SL on original position to function.

- Does not initiate trades itself — only creates reversals for existing ones.


want to add lot size and tp as step 

// Recovery logic

double lotSteps[] =       {0.01, 0.02, 0.02, 0.04, 0.04, 0.08, 0.08, 0.04, 0.04, 0.08, 0.08};

double tpMultipliers[] =  {2.0,  2.0,  2.5,  2.5,  3.0,  3.0,  4.0,  4.0,  4.0,  4.0,  4.0};


附加的文件：

MQ5
reverse_oder_magic_number.mq5
15.8 Kb

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