Βιβλιοθήκη γνώσης

This article describes an MQL5 Expert Advisor that receives Telegram messages and uses them to add technical indicators to MetaTrader 5 charts. Commands can specify indicator settings such as type, timeframe, period, and price input. The implementation…

This article extends an MQL layout system for graphical interfaces. It describes changes to the standard controls library, including protected members for extensibility, improved alignment and resizing behavior, safer container cleanup, and fixes for control…

This article uses MQL5 graphics to animate sorting algorithms as they rearrange a histogram of values. Colored columns mark comparisons, swaps, pivots, and partition boundaries, while configurable delays make each operation visible. The implementation uses…

This article presents an MQL5 design for storing economic-calendar events and previously triggered trade IDs in a shared SQLite database. It replaces embedded CSV test data and memory-only trade records with an events table and a deduplication table in the…

This article explains how to build a reusable MQL5 trailing-stop class for managing open positions. A base class handles position direction, current stop level, stop updates, timer-driven indicator refresh, and optional chart buttons for enabling or…

This article describes a MetaTrader indicator that projects synthetic candles after a confirmed fast and slow EMA crossover. The signal module latches the crossover direction and anchor, while a calibration step measures recent candles’ average body and…

The article extends a MetaTrader tool for displaying higher-timeframe candle structure on lower-timeframe charts. It explains how candle bodies and wicks represent different parts of the period’s price range, then describes filling or highlighting the upper…

This programming tutorial uses a chart display example to explain how MQL5 structures can group related state and how functions can save and restore that state. A script first records whether the chart’s date and price scales are visible, hides them briefly,…

This introductory tutorial explains how to create a database and make it the active database using MySQL Workbench or MetaEditor. It describes several ways to issue SQL commands, including a command line, a graphical workbench, MQL5 code, and sockets…

This article describes how an MQL5 Expert Advisor can publish structured trading signals to Apache Kafka using raw TCP sockets and a hand-built implementation of the Kafka producer protocol. It covers big-endian fields, base-128 varints with zigzag encoding,…

This project describes a workflow for turning MetaTrader 5 bar data into an animated visual in Blender. An MQL5 script exports open and close prices over a user-selected time range and timeframe, along with price change and a duration value adjusted by a…

This tutorial introduces Boolean expressions, comparisons, logical operators, conditional branches, loops, and switch-case statements through an MQL5 indicator that marks inside and outside bars. It explains how the indicator distinguishes completed candles…

This article explains how to preserve the original stop-loss and take-profit levels of open positions when an MQL5 Expert Advisor suspends stops during a news window. It replaces volatile in-memory state with terminal global variables: each saved position…

This article explains how the Z-order property affects selection and interaction among overlapping chart objects in MetaTrader 5. Using chart objects as an example, it shows that the order in which objects are drawn does not necessarily determine which one…

This article presents an MQL5 implementation of a TQNet temporal query model, focusing on a multi-head attention module that combines source time-series data with accumulated global correlation parameters. The module extends a cross-attention layer, uses a…

This article describes an MQL5 expert advisor for trading opening range breakouts across configurable sessions. The trader chooses a session start time, a range duration, and a timeframe; the system records the range high and low, then enters in the…

This article explains how a Kohonen self-organizing map (SOM) can organize multidimensional market features into a two-dimensional grid. Each input pattern is matched to its closest neuron using Euclidean distance, then the winning neuron and nearby neurons…

This article seeks a reproducible way to distinguish trend-like behavior from flat or random movement. It first defines trading success through positive expected payoff, which depends on win probability and the sizes of average gains and losses. It cautions…

The article warns against treating the best historical optimization result as a forecast of future performance. It proposes repeatedly optimizing over a rolling historical window, then testing the selected settings on the next, separate period. Recording…

This article explains how to work with the MetaTrader economic calendar through a unified news structure that combines country, event, and release-value information. It outlines checks for upcoming releases associated with a symbol’s currencies and shows how…

This article extends an MQL5 canvas drawing layer with eight geometric tools and nine annotation tools for chart analysis. Shapes include rectangles, triangles, rotated forms, paths, circles, arcs, and curves; annotation types include text, arrows, notes,…

This article describes an MQL5 indicator that derives relative currency index series from seven USD currency pairs, then applies RSI, MACD, or a Stochastic Oscillator to those indexes. Its architecture separates plotted output lines from quote data, currency…

The article explains Ichimoku Kinko Hyo’s five components and their standard calculations: the Tenkan-sen and Kijun-sen use midpoints of period highs and lows, the two Senkou spans form the cloud, and the Chikou span plots the close backward. It then turns…

This article extends an MQL5 graphical-interface library to support multiple windows and manage which controls receive left-clicks. Opening a dialog generates a custom event; the event handler identifies the window, records the previously active window,…