Print massive information (Print XY Z) from the terminal
This tool for MetaTrader 5 is specifically engineered to streamline your trading operations. This library provides a collection of modular, reusable code. It is utilized by developers to organize common functions, allowing for the integration of complex logic across multiple Expert Advisors, indicators, or scripts without the need for code duplication.
How to Setup and Use Print massive information (Print XY Z) from the terminal
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.
Description & Settings
A small collection of functions to print massive information from the terminal to the Experts tab.
This is most useful for printing (and debugging) the trade account specs, the client terminal properties, OpenCL devices, a specific chart or symbol, mql program info, or printing a specific position/deal/order in the trading history. Printing all tester statisitcs is available inside OnTester() or OnDeinit() in tester.
Definitions of all the enumerated types of MQL5 language can also be pretty-printed using a generic way (no hard-coded enums, to ensure printing all newly-added values to MQL5) by using
PrintEnum<T>()
, where T is the enum type, such as ENUM_TIMEFRAMES.
The
PrintStruct(var)
function is used to pretty print a structure variable (with the display of all its field names and values).
The
PrintExpr(x)
function-like macro prints a stringified expression along with its value and type. This is used mainly to debug expressions, variables or function calls.The output of this script can be sent to a remote-support person or to a freelance developper to aid detecting and fixing problems on your terminal.
Functions: MetaEditor Tip:
By including 'PrintXYZ' library in your projects, the above functions will become available in MetaEditor's auto-complete box wherever, you type 'Print'. You can quickly compile the project file to print the results of MQL5 functions to the 'Experts' tab, and then you can decide which combination of MQL function / enum value will suit your requirements the best.
Test script: Sample output:
Updates
:
2025.02.15 - v.1.20 : Initial release.
2025.02.17 - v.1.30 : Added function PrintTesterStatistics(). Output more information from the existing functions.
2025.02.20 - v.1.40 : Added function PrintOpenCL() - Prints the OpenCL device properties to the Experts tab.
2025.02.21 - v.1.50 : Added function-like macro PrintExpr() - Prints a stringified expression along with its value and type.
2025.02.22 - v.1.52 : Printing enumeration parameter in the function information output.
