xml parser for metatrader 4/5
Info
The xml parser for metatrader 4/5 is a Library for MetaTrader 5 that the cxmlelement class offers a comprehensive set of functionalities for interacting with xml documents. it facilitates the creation of a dom-model (objects tree) from an xml-document or a specific element within it.
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 xml parser for metatrader 4/5
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 cxmlelement class offers a comprehensive set of functionalities for interacting with xml documents.
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: MQTT Five — MQTT 5.0 Client Library for MetaTrader 5 - another powerful library for MetaTrader 5 traders.
the cxmlelement class offers a comprehensive set of functionalities for interacting with xml documents.Also recommended: asq session manager for metatrader 5 - similar library with strong performance on MetaTrader 5.
it facilitates the creation of a dom-model (objects tree) from an xml-document or a specific element within it.
users can read, modify, create, and delete nested elements and text within the xml structure.
the object model can be saved back to xml format.
class interface:
class cxmlelement { public: string name; cxmlelement *elements[]; cxmlattribute *attributes[]; string text; ... string setxml (string xml); string getxml (); };
the cxmlattribute class provides straightforward access to class attributes:
class cxmlattribute { public: string name; string value; };
below is a script example that demonstrates xml parsing and information extraction from the dom tree:
//+------------------------------------------------------------------+
//| xmlparserscript.mq5
//| copyright 2026, metaquotes software corp.
//| [email protected]
//+------------------------------------------------------------------+
#include
//+------------------------------------------------------------------+
//| script start
//+------------------------------------------------------------------+
void onstart()
{
cxmlelement xmldoc;
string xml="
print("xml="+xml);
string res=xmldoc.setxml(xml);
if(res=="")
{
print("the root element: "+xmldoc.name);
print(" number of attributes: "+string(arraysize(xmldoc.attributes)));
print(" nested elements: "+string(arraysize(xmldoc.elements)));
print(" first nested element:"+xmldoc.elements[0].name);
print(" its first attribute: "+xmldoc.elements[0].attributes[0].name+"="+xmldoc.elements[0].attributes[0].value);
print(" its text: "+xmldoc.elements[0].text);
print("xml="+xmldoc.getxml());
}
else
print(res);
}
//+------------------------------------------------------------------+
the script execution yields the following result:
additional information:
the current version focuses on elements, attributes, and text, disregarding comments, descriptions, and other information. this may lead to potential information loss about codepage and version, affecting xml document saving.
during saving, special symbols like <&"&'> are converted into entities like <:, >, adhering to xml standards.
this parser is primarily designed for xml document parsing rather than comprehensive xml manipulation.
files are located in the following paths:
terminal_data_folder\mql5\libraries\xmlparser.dll
terminal_data_folder\mql5\include\xmlparser.mqh
terminal_data_folder\mql5\scripts\xmlparserscript.mq5
You may also like: kelly-va p s risk engine for metatrader - excellent alternative for library users on MetaTrader 5.
Source Code
#include <xmlparser.mqh>
void onstart()
{
cxmlelement xmldoc;
string xml="<!--comment--><root><item attr1=\"hellow\">terminal "mt5"</item></root>";
print("xml="+xml);
string res=xmldoc.setxml(xml);
if(res=="")
{
print("the root element: "+xmldoc.name);.......
⚠ 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.