This script is a foundational template designed for the MetaTrader platform. It serves as a skeletal framework for creating a custom visual indicator that displays directly on a trading chart.
The logic of the script can be broken down into three primary stages:
Configuration and Setup At its core, the script defines basic properties that tell the trading platform how to behave. It identifies itself as an "indicator" and specifies that its data should be drawn on the main price window rather than in a separate sub-window at the bottom of the screen. It also includes a placeholder for user-adjustable settings, allowing a trader to input specific variables without needing to modify the underlying logic.
Initialization and Cleanup The script contains two dedicated sections for "Life Cycle" management:
- Initialization: This part of the code runs only once—at the very moment you drag the indicator onto your chart. It is designed to prepare the environment, set up necessary calculations, and get the system ready for display.
- Deinitialization: This section triggers when you remove the indicator from the chart or close the program. Its role is to perform "cleanup," ensuring that any temporary data or resources used by the script are properly released back to the system.
The Real-Time Processing Loop The final section of the logic is the continuous calculation engine. This part of the script is designed to execute repeatedly as new price data flows into the market. It checks how many bars (time periods) have already been processed and provides a space where specific mathematical rules or visual signals are calculated. By monitoring these updates, the script ensures that any visual information remains current with the moving market price.
In summary, while this specific version acts as a clean slate, it establishes the professional architecture required to monitor live market data, handle user inputs, and display custom visual information on a trading screen.
/*-----------------------------+
| |
| Shared by www.Aptrafx.com |
| |
+------------------------------*/
//+------------------------------------------------------------------+
//| x.mq4 |
//| Copyright © 2005, MetaQuotes Software Corp. |
//| http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net"
#property indicator_chart_window
//---- input parameters
extern int ExtParam1;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- indicators
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int counted_bars=IndicatorCounted();
//----
//----
return(0);
}
//+------------------------------------------------------------------+
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