PN G
Info
The PN G is a Library for MetaTrader 5 that this library allows you to comfortably work with png graphic files, as well as scale them. There are two ways to upload PNG images:via file via a resource that is inside your ex5 file Working with PNG images via resource:Working with PNG images via file:As you can see, it is possible to immediately form a canvas and display the image on the screen.
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 PN G
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
This library allows you to comfortably work with PNG graphic files, as well as scale them.
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: Simplified Order Management Class for MT4/MT5 - another powerful library for MetaTrader 5 traders.
This library allows you to comfortably work with PNG graphic files, as well as scale them.
Also recommended: Channel Proximity Engine - similar library with strong performance on MetaTrader 5.
There are two ways to upload PNG images:via file
via a resource that is inside your ex5 file
Working with PNG images via resource:
Working with PNG images via file:
As you can see, it is possible to immediately form a canvas and display the image on the screen. And you can also be satisfied with just creating a bmp[] bitmap array without creating a canvas object for this image. In this case, you can use this array in more advanced implementations with your own canvases (see the demo below).
Further, an important function of this CPng class is the ability to generate a new image size using the Resize(double NewWidth) method, which will be located in the _bmp[] array, which can also be displayed on the screen, forming a canvas of this size.
In this case, the class instance will contain two bmp[] arrays (original image) with width "width" and height "height", as well as a resized _bmp[] array (width "_width" and height "_height"). All methods and parameters in the CPng class with an underscore at the beginning of the name refer to the resized image (_bmp[], _width, _height, _CreateCanvas(), _MoveCanvas())
The following functions are also available for working with original and modified images:
I have prepared a demo program-expert (Expert_Test_PNG.mq5), which compactly and visually demonstrates the work of this library. In this example, in addition to simply displaying PNG images, parsing of a table of PNG icons is implemented. (see gif animation)
I saw the implementation of this algorithm for decompressing PNG files from in this 7 years ago, which was taken as the basis of this library. The resize algorithm is my development.
You may also like: AS Q Order Executor - excellent alternative for library users on MetaTrader 5.
⚠ 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.