Binary Counter in MT4

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Hello everyone , I am trying to write a four digit binary counter ( 0000 0001 0010 ... 1111) , I searched and wasn't lucky to find an answer I wonder if someone have an idea or a hint of how to approach this problem Regards icon

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void Int32ToBinString( int value, string& str ){
  
   // 32 bits + 1 space/4 bits = 7 + terminator 1 = 40
   StringInit( str, 40, 0 );
 
   for( int i=31, j=1; i>=0; i--, j++ ){
      StringAdd( str, value & (1<<i) ? "1" : "0" );
      if( j%4 == 0 ){
         StringAdd( str, " " );
      }
   }
}
 
int OnInit()
{
   string lStr;
  
   for( int i=0; i<100; i++ ){
      Int32ToBinString( i, lStr );
      // write somehow lStr on the screen
      ChartRedraw();
      Sleep( 100 );
   }
  
  
   return INIT_SUCCEEDED;
}