Kunthawat Greethong
b26c8199a5
Changes: - Add FAL_KEY and GEMINI_API_KEY to .env.example - Update picture-it to use ~/.config/opencode/.env (unified creds) - Remove shodh-memory skill (no longer used) - Remove alphaear-* skills (deprecated) - Remove thai-frontend-dev skill (replaced by website-creator) - Remove theme-factory skill - Add mql-developer skill (MQL5 trading) - Add ecommerce-astro skill (Astro e-commerce) - Add website-creator skill (Next.js + Payload CMS) - Update install script for new skills
63 lines
2.8 KiB
Markdown
63 lines
2.8 KiB
Markdown
---
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name: mql5-ea-troubleshooting
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description: MQL5 EA runtime errors and attach failures — init failures, INVALID_HANDLE 32757, build-specific enum differences
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---
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# MQL5 EA Troubleshooting
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## Common runtime errors (attach failed)
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### Error 32757 (0x8001 = E_HANDLE / INVALID_HANDLE)
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Usually means an indicator handle creation failed, or a **function call/argument mismatch** in `OnInit()`.
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**Stack mismatch diagnosis:**
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```mql5
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// Call site passes 9 args:
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g_orderManager.Init(g_symbol, InputMagicNumber, InputComment,
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InputEntryPrice, InputSL, InputTP,
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InputMaxFollowOrders, InputUseTrailingSL,
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InputFollowDelayBars); // ← 9 args
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// But declaration only accepts 8:
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void Init(string symbol, int magicNumber, string comment,
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double inputEntry, double inputSL, double inputTP,
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int maxFollow, bool useTrailing, int followDelayBars); // ← 8 params
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// ↑ stack corrupted
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```
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Fix: match declaration to call.
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**Indicator handle failure:**
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- `iATR(symbol, PERIOD_M5)` → in some builds requires 3 params: `iATR(symbol, PERIOD_M5, period)`
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- `iATR(handle)` returns `INVALID_HANDLE` if symbol/timeframe unavailable
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- Always check: `if(handle == INVALID_HANDLE) return INIT_FAILED;`
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---
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## Build-specific enums (tested on build 3570+)
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| Enum | Wrong | Correct |
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|------|-------|---------|
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| ATR params | `iATR(sym, TF)` (2 args) | `iATR(sym, TF, period)` (3 args) |
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| Account margin | `ACCOUNT_MARGIN_MODE_NETTING` | `ACCOUNT_MARGIN_MODE_RETAIL_NET` |
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| Account free margin | `ACCOUNT_FREEMARGIN` (deprecated) | `ACCOUNT_MARGIN_FREE` |
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| Symbol contract size | `SYMBOL_CONTRACT_SIZE` | `SYMBOL_TRADE_CONTRACT_SIZE` |
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| Margin rate | `SYMBOL_MARGIN_RATE` (doesn't exist) | `SYMBOL_MARGIN_HEDGED` or use `OrderCalcMargin()` |
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| TRADE_TRANSACTION | `TRADE_TRANSACTION_POSITION_CLOSE`, `_OPEN` don't exist | Use `TRADE_TRANSACTION_DEAL_ADD` + `TRADE_TRANSACTION_POSITION` |
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| `CTrade.SetComment()` | doesn't exist | Pass comment string directly to `Buy()`/`Sell()` |
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---
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## Type coercion warnings (benign — still compile)
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- `SymbolInfoInteger()` returns `long`; assign to `double` with explicit cast: `(double)SymbolInfoInteger(sym, SYMBOL_SPREAD)`
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- `rates[].tick_volume` is `long`; cast: `(double)rates[0].tick_volume`
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---
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## Debug approach for attach/init failures
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1. Check if error is an `INIT_*` code ( INIT_PARAMETERS_INCORRECT = 5, INIT_FAILED = 7)
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2. If not INIT code → look for INVALID_HANDLE or E_HANDLE
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3. Search all files for `IndicatorCreate`, `iATR`, `iAC`, `iADX` — ensure all handles checked
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4. Count arguments in every Init/constructor call vs. declaration
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5. Check global-scope code that runs before `OnInit()` (including class member constructors)
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