Using the library in script

[Mohd Azizi Bin Mohamed]

Hi,

Can we use the standard library in script? I'm trying to create rectangle using script and the library but nothing happen. Got no problem using ObjectCreate.

#property strict
#include <ChartObjects\ChartObjectsShapes.mqh>
CChartObjectRectangle try;
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
//---
   try.Create(ChartID(),"scriptbox",0,0,0,0,0);
  }
//+------------------------------------------------------------------+

When I run the script, the rectangle is not in Object List (Ctrl+B).

But when I do it using Indicator,

#property strict
#property indicator_chart_window
#include <ChartObjects\ChartObjectsShapes.mqh>
CChartObjectRectangle try;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
  {
//---
   if(prev_calculated==0)
     {
      try.Create(ChartID(),"boxtry",0,0,0,0,0);
     }
//--- return value of prev_calculated for next call
   return(rates_total);
  }

the rectangle is there in the object list.

I remember reading one of the advantages using the library when creating objects is that the object is deleted when the Indicator/EA is removed.

Does this mean that when the script is removed (automatically after completion), the rectangle is also removed?