cdownloadhistory class: historical data download utility
Info
The cdownloadhistory class: historical data download utility is a Library for MetaTrader 5 that the cdownloadhistory class offers methods for downloading historical data in both visual and silent modes. visual modean example of visual mode usage is found in the downloadhistoryvisualmode.
Usage
This tool is typically used for enhancing chart analysis and decision making.
Platform
This Library works exclusively on MetaTrader 5 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL5/Libraries folder via File ? Open Data Folder in MetaTrader 5.
How to Install and Use cdownloadhistory class: historical data download utility
1. Storage: Place library files in the MQL/Libraries directory to ensure they are accessible to your projects.
2. Implementation: Include the library in your code using the #import directive, ensuring you match the exact function names and parameters.
3. Compilation: Ensure the library is present in the directory before you compile your main EA or script, as the compiler links them during this phase.
4. Management: Keep libraries organized in sub-folders if you manage many custom functions to maintain a clean project structure.
Frequently Asked Questions
Q: What is a library file used for? A: Libraries store reusable code modules, allowing you to centralize common logic used by multiple EAs or indicators.
Q: Is a library executable? A: No, libraries are non-executable files containing functions; they must be imported into an EA, indicator, or script to function.
Q: Can I update a library while the platform is running? A: You should compile your EA or script after updating a library to ensure the latest code changes are integrated.
What this tool does
the cdownloadhistory class offers methods for downloading historical data in both visual and silent modes.
Typical Use Case
This Library excels in automated trading and technical analysis on MetaTrader 5.
Compatible Platform & Setup
This Library works on MetaTrader 5. Place the file in the MQL5/Libraries folder and restart the terminal.
Description & Settings
Related: Ceronarray Class: Efficiency Ratio Calculation for AMA - another powerful library for MetaTrader 5 traders.
the cdownloadhistory class offers methods for downloading historical data in both visual and silent modes.Also recommended: Cerdonarray Class: Efficiency Ratio Calculation for Trend Analysis - similar library with strong performance on MetaTrader 5.
visual mode
an example of visual mode usage is found in the downloadhistoryvisualmode.mq5 file.
the input parameter for the history download mode allows selection between "current symbol" or "all symbols from market watch window".
when "all symbols from market watch window" is chosen, two progress bars are displayed.
if "current symbol" mode is selected, a single progress bar is shown.
results are logged in the "experts" tab of the "toolbox" window.
silent mode
the outcome of the download is indicated by a return code. this silent mode is beneficial for applications where visualization is not required. refer to the downloadhistorysilentmode.mq5 script for an example.
this class utilizes the cprogressbar class.
You may also like: MQTT Five — MQTT 5.0 Client Library for MetaTrader 5 - excellent alternative for library users on MetaTrader 5.
Source Code
#property copyright "robotfx"
#property link "https://robotfx.org"
#property version "1.00"
#property description "this code is educational. feel free to use, modify and upgrade as you wish. visit robotfx.org for professional trading tools"
#property description "this code is educational. feel free to use, modify and upgrade as you wish. visit robotfx.org for professional trading tools"
#property script_show_inputs
#include "cdownloadhistory.mqh"
input enum_downloadhistorymode dmode; // history download mode
void onstart()
{.......
⚠ Limitations & Risk Warning
- This tool is provided for educational and testing purposes only.
- Past performance does not guarantee future results.
- Trading involves substantial risk of loss. Use on a demo account first.
- Results may vary depending on market conditions, broker, and settings.
- We recommend thorough backtesting and forward testing before using with real funds.