NewBie Question: What is MODE_LOTSTEP

[[Deleted]]

I just start learning mql4, got stuck on one of hte sample code.

what does MODE_LOTSTEP mean ? Step for changing lots. I am still confused.

here's the code

int start()                                     // Special function start
  {
   int Dist_SL =10;                             // Preset SL (pt)
   int Dist_TP =3;                              // Preset TP (pt)
   double Prots=0.35;                           // Percentage of free margin
   string Symb=Symbol();                        // Symbol
//-------------------------------------------------------------------------- 2 --
   while(true)                                  // Cycle that opens an order
     {
      int Min_Dist=MarketInfo(Symb,MODE_STOPLEVEL);// Min. distance
      double Min_Lot=MarketInfo(Symb,MODE_MINLOT);// Min. volume
      double Step   =MarketInfo(Symb,MODE_LOTSTEP);//Step to change lots
      double Free   =AccountFreeMargin();       // Free Margin
      double One_Lot=MarketInfo(Symb,MODE_MARGINREQUIRED);//Cost per 1 lot
      //-------------------------------------------------------------------- 3 --
      double Lot=MathFloor(Free*Prots/One_Lot/Step)*Step;// Lots

Last line in the code. "Free*Prots/One_Lot" is to get 35% of free margin and divided by cost/lot to get total lot you can buy. but why you have to divided by " Step" then at the end multiply "Step" again.

Please explain to me what "Step" means. explanation in the documenation doens't make any sense.

[[Deleted]]

FE

It is the minimum amount by which you can increase lot size, e.g.

Two brokers providing mini accounts as their smallest so MODE_MINLOT would reveal 0.1 as minimum lot size

But broker XXX allows increments of 0.1 only (MODE_LOTSTEP = 0.1), broker YYY allows 0.01 increments

Good Luck

-BB-

[[Deleted]]

BarrowBoy, thank you so much.