Fix: Your Bot Token is incorrect or copied poorly. Double-check for missing characters or accidental spaces.
It works directly on your desktop or VPS without needing a dedicated server. How to Set Up Telegram4MQLDLL (Step-by-Step)
Tools like emerged to solve these limitations by packaging a C#/.NET library into an unmanaged C++ compatible DLL (Dynamic Link Library) . This architecture offloaded heavy HTTP asynchronous requests and JSON string serialization away from the core MetaTrader terminal thread. telegram4mqldll
The library simplifies complex web communication into a few accessible functions for MQL programmers:
Native WebRequest() functions can freeze your MT4/MT5 chart or delay execution loops while waiting for a response from Telegram servers. A DLL handles requests in the background, ensuring your EA executes trades without lag. Fix: Your Bot Token is incorrect or copied poorly
The core engine that handles the web requests and JSON parsing.
: Traders who run "copy trading" groups use this DLL to instantly broadcast their EA's trades to subscribers. Portfolio Monitoring How to Set Up Telegram4MQLDLL (Step-by-Step) Tools like
While telegram4mqldll was a popular early solution, the landscape has evolved. Developer Steven England later introduced the library, which is designed specifically for MetaTrader 5 (MT5) and is considered more stable, as it utilizes modern JSON handling. Key Differences:
By default, MQL restricts network functions like WebRequest to Expert Advisors only; calling such functions from a custom indicator returns error 4014 ("Function is not allowed for call"). To send Telegram messages from an indicator, you cannot rely on the built-in WebRequest . Instead, you must restructure your project to use Wininet.dll directly (a lower-level Windows HTTP library), which does have indicator compatibility.
Never hardcode your Telegram Bot Token if you plan to share or sell your EA. Use input variables so users can input their own credentials safely.