GDP — Gestionnaire De Positions for MetaTrader 5

A complete position manager for discretionary traders, delivered as one MQL5 source file with no external dependency. It sizes the position for the risk you choose (fees included), places the order from the chart, manages open positions, keeps the account's daily / weekly / monthly results, and journals every trade with its reasons and a screenshot.

It never trades on its own. There is no signal, no detection, no alert: every order is a click by the trader. GDP removes the arithmetic and the bookkeeping, not the decision.

Interface available in French and English (GDP_Language).

What it does

Module	Details
Fee-inclusive position sizing	Iterative lot calculation that converges on the exact loss at stop including commission, swap and spread; margin guard; capped target risk. Commission can be auto-detected per symbol or set per lot (Forex / CFD).
Reward / risk, three ways	Gross RR, RR net of fees, and RR adjusted for volatility (ATR above a threshold is converted into an expected slippage).
Order placement	Market or pending, from draggable Entry / Stop / Target lines on the chart. Default levels are derived from the current ATR so there is always something to drag.
Open positions panel	Move to break-even (plus fees), close one, close all; manages every position of the symbol or only GDP's own (GDP_ManageOnlyOwn).
Results (Bilan)	Day / week / month per instrument from the account history: profit, commission, swap. Day boundary configurable in server time. Movable panel, refreshed automatically.
Trade journal	At each order: free-text reasons, up to 8 clickable tags (structure, liquidity, FVG, order block, retest, session, news, counter-trend by default), a screenshot of the setup (BMP or PNG), stored as CSV under MQL5\Files\GDP_Journal. A review panel lets you re-read every entry with its image without leaving the chart.
Interface	Movable panels, compact / advanced mode, single colour palette, status line instead of pop-up alerts, bilingual.

Install

1. Copy GDP.mq5 into <MetaTrader 5 data folder>\MQL5\Experts\.
2. Open it in MetaEditor and compile (F7) — 0 errors, 0 warnings — or use the command line: metaeditor64.exe /compile:"MQL5\Experts\GDP.mq5" /log.
3. Drag GDP onto a chart and allow algorithmic trading for that chart (needed to send your orders; GDP still never opens anything by itself).

Inputs

Group	Input	Default	Meaning
Risk & sizing	GDP_RiskPercent	0.25	Default risk per trade, % of balance
	GDP_IncludeAllCosts	true	Include fees in the lot calculation
	GDP_ShowCalculations	false	Detailed calculation logs in the Experts journal
Commission	GDP_UseCommission	true	Take commission into account
	GDP_AutoDetectCommission	false	Guess the commission from the symbol
	GDP_CommissionPerLot	7.0	Forex commission per lot, round trip, $
	GDP_CFDCommissionPerLot	0.0	CFD / index commission per lot, $
Volatility	GDP_ShowVolatility	true	Show Vol $ and RR Vol
	GDP_ATRPeriod	14	ATR period
	GDP_MaxATRPips	50.0	ATR (pips) above which slippage is estimated
	GDP_VolSlippageFactor	0.10	Estimated slippage per ATR pip above the threshold
Execution	GDP_MagicNumber	26082501	Magic number of GDP orders
	GDP_ManageOnlyOwn	false	true = manage GDP positions only
	GDP_Deviation	20	Max deviation (points) on market orders
Results	GDP_DayResetHour	0	Server hour that starts the trading day
Journal	GDP_JournalEnabled	true	Journal placed orders
	GDP_SnapshotOnOrder	true	Capture the setup when recording
	GDP_SnapshotWidth / Height	760 / 420	Snapshot size in pixels
	GDP_SnapshotAsBMP	true	BMP (readable in the review panel) or PNG (lighter)
	GDP_JournalTags	8 tags	Clickable reasons, comma-separated
Default levels	GDP_DefaultSLPips	0.0	Stop distance at start (0 = current ATR)
	GDP_DefaultRR	3.0	Target at start = RR × stop distance
Interface	GDP_Language	FR	Interface language (FR / EN)
	GDP_AdvancedOnStart	false	Show the advanced block at start
	GDP_PanelX / GDP_PanelY	20 / 20	Panel position
	GDP_LinesOnStart	true	Entry / SL / TP lines visible at start

Design notes

• Single file on purpose. Traders install tools by dropping one file; every #include is a support ticket. The only dependency is the standard Trade\Trade.mqh.
• Sizing converges, it does not approximate. The lot is iterated until the loss at stop, fees included, matches the target risk within the broker's lot step, then clamped by margin.
• Text at the point of use. Both languages are written where the string is used (GDP_T(fr, en)), so a missing translation cannot exist.
• Journal first. The review panel exists because a trade you cannot re-read with its screenshot is a trade you cannot learn from.

Status

Version 1.00, ~3,400 lines, compiles with 0 errors / 0 warnings in the current MetaEditor. Tested on a demo account. Use at your own risk; this is a tool, not advice.

License

PolyForm Noncommercial 1.0.0. Free to use, study and modify for personal and other non-commercial purposes. Commercial use, including resale or inclusion in a paid product, requires written permission from the author (adoua.arthur@gmail.com).