Any questions from newcomers on MQL4 and MQL5, help and discussion on algorithms and codes - page 286

[Alexey Viktorov]

Nauris Zukas:

Didn't work, maybe there's a mistake in the code?

And how do you want to assign the "select" property to an object by dragging that object before it's selected???

You have to do that when you create the object. But you can cancel selection by dragging event as well.

[Nauris Zukas]

Alexey Viktorov:

And how do you want to assign the "select" property to an object by dragging the object before it's selected?

You have to do that when the object is created. But you can unselect it with a dragging event as well.

Thank you, I've more or less understood the error. I will have to redo it.

[Vitaly Muzichenko]

Nauris Zukas:

Thank you, I more or less understand the mistake. I'll have to redo it.

There's not much to redo.

void SetHLine(color cl, string nm="", double p1=0, int st=0, int wd=1) {
  if (nm=="") nm=DoubleToStr(Time[0], 0);
  if (p1<=0) p1=Bid;
  if (ObjectFind(nm)<0) {
   ObjectCreate(nm, OBJ_HLINE, 0, 0,0);
   ObjectSetInteger(0,nm,OBJPROP_SELECTED,true);
  }
  ObjectSet(nm, OBJPROP_PRICE1, p1);
  ObjectSet(nm, OBJPROP_COLOR , cl);
  ObjectSet(nm, OBJPROP_STYLE , st);
  ObjectSet(nm, OBJPROP_WIDTH , wd);
}

[Alexey Viktorov]

Vitaly Muzichenko:
I don't need to redo it.

Vitaly, have you checked it in mql4? I got something in mql5 only in 3 lines not counting object creation.

   ObjectSetInteger(0, name, OBJPROP_HIDDEN, false);
   ObjectSetInteger(0, name, OBJPROP_SELECTABLE, true);
   ObjectSetInteger(0, name, OBJPROP_SELECTED, true);

By removing any of these lines the object is not selected.

[Vitaly Muzichenko]

Alexey Viktorov:

Vitaly, have you checked it in mql4? I got something in mql5 only in 3 lines not counting object creation.

By removing any of these lines the object is not selected.

It's in 5 you need the full set, in 4 each works separately

[Vitaly Muzichenko]

A hint, there is an indicator in a subwindow that uses 5 buffers, but three of them are hidden.

Question: how to remove the extra calculation readings, it displays all 5 but only needs 2

[Konstantin Erin]

Vitaly Muzichenko:

A hint, there is an indicator in a subwindow that uses 5 buffers, but three of them are hidden.

Question: how to remove the extra calculation readings, it displays all 5 but only needs 2

If there is a source - DROW_NONE - absence of any drawing

[Nauris Zukas]

Vitaly Muzichenko:
Not much need for rework

Thank you, everything works! Can you tell me how the Expert Advisor detects the price of a moved line?

[Konstantin Erin]

Nauris Zukas:

Thank you, it all works! Can you tell me how the Expert Advisor identifies the price at which the line is moved?

One of the line properties is price as a coordinate on the vertical axis

[Nauris Zukas]

STARIJ:
one of the line properties will be price as a vertical axis coordinate

Thank you, I found the properties function - ObjectGet.