//+------------------------------------------------------------------+
//|                                           use_error_handling.mq5 |
//|                                  Copyright 2025, MetaQuotes Ltd. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2025, MetaQuotes Ltd."
#property link "https://www.mql5.com"
#property version "1.00"
#property indicator_chart_window
#include <PublicMQL/Global/ErrorHandeling/Models/Logs.mqh>

CLog *log;

class Error_Test
{
public:
  int init_var;
};

Error_Test *error_obj;

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
{
  log = CLog::GetLog();

  if (CheckPointer(error_obj) == POINTER_INVALID)
  {
    log.AddMessage(new CMessage(MESSAGE_ERROR, __FUNCTION__, "Error_Test object is not initialized"));
  }
  else
  {
    Print(error_obj.init_var);
  }

  return (INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int32_t rates_total,
                const int32_t 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 int32_t &spread[])
{
  //---

  //--- return value of prev_calculated for next call
  return (rates_total);
}
//+------------------------------------------------------------------+