//+------------------------------------------------------------------+
//|                                               My_Object_Test.mq5 |
//|                                                 Eduardo Zucarato |
//|                                               zucarato@gmail.com |
//+------------------------------------------------------------------+
#property copyright "Eduardo Zucarato"
#property link      "zucarato@gmail.com"
#property version   "1.00"

//--- example for CObject::Prev() 
#include <Object.mqh>

class CObjectTest : public CObject
   {

private:
   static *CObjectTest last_object;

public:
   
   CObjectTest() { last_object=NULL; } //Firt object must use this constructo
   
   CObjectTest( CObjectTest *the_last ) // Next object must use this constructo
   
   string test_text;
   

   
   };
//+------------------------------------------------------------------+
//| Parametric constructor                                           |
//+------------------------------------------------------------------+
CObjectTest :: CObjectTest (CObjectTest *the_last)
   {
      
   
   }





//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
//---
   CObjectTest *my_test, *my_first;
   
   my_first = my_test = new CObjectTest;
   
   my_test.test_text = "First instance text";
   
   Print("my_first.test_text = ",my_first.test_text);
   
   Print("my_test.test_text = ",my_test.test_text);
   
   Print("End of test 1");
   
   my_test = new CObjectTest;
   
   my_test.test_text = "Second instance text";
   
   Print("my_first.test_text = ",my_first.test_text);
   
   Print("my_test.test_text = ",my_test.test_text);
   
   Print("End of test 2");
   
   
   //CObjectTest my_test2 = my_test.Prev();
   my_test = my_test.Prev();
   
   Print("my_first.test_text = ",my_first.test_text);
   
   Print("my_test.test_text = ",my_test.test_text);
   
   Print("End of test 3");
   
   
   delete my_test;
   delete my_first;
   
  }
//+------------------------------------------------------------------+