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How to Draw Objects ABOVE chart?

  • #1
  • First Post: May 16, 2009 4:27am May 16, 2009 4:27am
e.g. How do you draw a solid blue rectangle on top of the chart covering the candles?

I'm trying to create a table of sorts with a lot of data.

I've seen it done in another indicator but just can't seem to mimic the effect myself. if the object's background is set to false, the object although comes to the foreground but it becomes just the outline, if background set to true, it becomes solid but goes to the background. I need it to be solid but in the foreground.

Any ideas? Thanks

regards,
Zen
Programming for a better future.
  • #2
  • May 16, 2009 4:30am May 16, 2009 4:30am
Quoting Zen_Leow
e.g. How do you draw a solid blue rectangle on top of the chart covering the candles?

I'm trying to create a table of sorts with a lot of data.

I've seen it done in another indicator but just can't seem to mimic the effect myself. if the object's background is set to false, the object although comes to the foreground but it becomes just the outline, if background set to true, it becomes solid but goes to the background. I need it to be solid but in the foreground.

Any ideas? Thanks

regards,
Zen
Isn't that controlled by turning the chart foreground on or off, using properties, or pressing F8?
  • #3
  • May 16, 2009 9:23am May 16, 2009 9:23am
ObjectSet("ObjectName", OBJPROP_BACK, False);

I would imagine this is what you do. The order you place the objects also seems to have an effect, so with your table idea, background first, then the table frame itself, then the cells are populated. SwingMan I know makes great tables.
  • #4
  • May 16, 2009 9:57am May 16, 2009 9:57am
Quoting Ronald Raygun
ObjectSet("ObjectName", OBJPROP_BACK, False);

I would imagine this is what you do. The order you place the objects also seems to have an effect, so with your table idea, background first, then the table frame itself, then the cells are populated. SwingMan I know makes great tables.
That's what i thought so at first but then i tried it and found out the object becomes outline only when switch background to false. i need it to be at the foreground and fully solid. perhaps i'll ask SwingMan like u suggested. thanks
Programming for a better future.
  • #5
  • May 16, 2009 1:47pm May 16, 2009 1:47pm
Quoting smjones
Isn't that controlled by turning the chart foreground on or off, using properties, or pressing F8?
I tried that too. the fact is.. charts are background by default. It'll be even worse when I switch it to foreground. But thanks anyway.
Programming for a better future.
  • #6
  • Jan 2, 2011 7:55am Jan 2, 2011 7:55am
im into resurrecting threads tonight.

i believe the answer is histograms (which work differently on the main chart window compared to how the help file describes which is for sub-windows)... ala heikin ashi.
Congratulations ScalaFX for coming out of the closet!
  • #7
  • Edited 5:08am Jan 3, 2011 3:21am | Edited 5:08am
nubcake

Seeings how you reopened this thread, let me give some ideas as to what I found, which may help others.

The original question about the box drawing effects are the way it is; in the foreground is an empty outline of the box and in the back ground it a solid box. guess MT did not want you to cover the price data. Will explain how to get arround this in a minute. but first you need to know;

MT uses a system where as the Name that you give your graphics determines in which order they gets placed on the chart that is first second and so on. It reduces the NAME into an number I beleive is the ASCII character (code) for letters and the numbers. There for the lower the number code the first to be printed. Now theres two levels of graphics, one below the price data and one above the price data these are controlled with the set background drawing flag for objects. but that does not determine which graphics gets placed on top of the other. just if they are above or below the price data. Granted if you place one object below the price and one above the price you will as so place it above the other object as well.

If you call one graphic object , '1.11 123 xyz line 2 1' and another, '1.11 123 xyz line 2 2'

The second one will be on top of the first one. Big deal? Yes. This is how I create some very detailed graphics. I create graphic pages, layers, and sublayers. Its in the nameing of the objects. I have 10 pages (0 through 9), 10 Layers to each page (again 0 - 9) with each layer haveing 10 sublayers, you guessted it (0 - 9). BTW your not limited to 10 and if you count above and below the price data I can have 20 Pages. This is a sample of my object nameing;

Inserted Code
        Graphic Page                         1.11
        Program Run number               123
        Program Symbol                     xyz
        Window                                0
        Group Name                          LineStudies
        Class                                   1
        SubClass                              1

If you view the graphics on your screen as pages of transparecies one on top of another and each page built of its own layers and sublayers then you can construct some very nice lay outs. the above graphic line study will get placed on page one, layer one, and sublayer one. there are two graphic page / layer, that I reserved and they are '0.00' its held for nor visiable objects. And page / Layer 9.99 which is held for 3 purposes 1) as control objects as those that I use for Drag N Drop, and 2)those for devices which can turn on and off functions within a program(s), and 3) those that are use as ports used for data exchange. (2 & 3 are non visiable as well). If you use graphic layers you have to place the page layer numes first in your naming. If not then the lay number will get consided too late in the name to be of any use.

Why all the fuss? Why make it so difficault?

First its not so diffcault, all you need to do is to create reuseable functions to do the task for you. Theres other benifits that you have to consider; all graphics from any number of programs attached to one price chart are all viewed in one large group. That is, if you have 2 programs running on one chart, then graphics are drawn based on the nameing not by which program starts first nor which graphics is drawn first they are controlled by the name. One program therefor can draw on top of existing graphics of even another program by using a high page number. Take it, that they are both drawing on the same window.

When removeing the graphics, that is if you have a block of graphics displayed on the main price screen, that is on window 0 and the graphics are constructed on page 3.xx. You don't need to hunt down the complete name of each part of the graphic block, just delete the page number from the given window.

Talk about deleting objects, with the above naming I can not only delete objects by graphic pages but by programs, and or run numbers if more then one copy of a program is running, by complete window placement, by the group name, class and subclass. In fact I have created function to control graphic deletions in this fastion.

Theres a lot of benifit to creating a structure for nameing graphics. This is just the basics. If theres any interest I will explain more. The attachments are all examples of graphic pageing and layering.


Keit





Quoting nubcake
im into resurrecting threads tonight.

i believe the answer is histograms (which work differently on the main chart window compared to how the help file describes which is for sub-windows)... ala heikin ashi.
Attached Image(s) (click to enlarge)
Click to Enlarge Name: Graphic example.jpg Size: 26 KB
Click to Enlarge Name: Meta Applets.jpg Size: 52 KB
Attached Image
Trader Keit ... Methods Of A Dirt Road Mad Man....
  • #8
  • Jan 8, 2011 8:20am Jan 8, 2011 8:20am
Quoting CockeyedCowboy
nubcake

Seeings how you reopened this thread, let me give some ideas as to what I found, which may help others.

The original question about the box drawing effects are the way it is; in the foreground is an empty outline of the box and in the back ground it a solid box. guess MT did not want you to cover the price data. Will explain how to get arround this in a minute. but first you need to know;

MT uses a system where as the Name that you give your graphics determines in which order they gets placed on the chart that is first second...
Yes.. i'm interested Keit...

please continue..
...
  • #9
  • Jan 8, 2011 10:28am Jan 8, 2011 10:28am
I've sent you a PM


Quoting bandung
Yes.. i'm interested Keit...

please continue..
Trader Keit ... Methods Of A Dirt Road Mad Man....
  • #10
  • Jan 10, 2011 10:36am Jan 10, 2011 10:36am
I have an off topic question about objects.

I want to change a level line in an indicator from drawing across the chart to just drawing from the current candle to the right hand side of the chart. (like the "open" and "dpp" lines in the sample picture below)

I can't find the function in the MQL4 book or on the web and it's making me a bit nuts because I know it's something simple.

If someone can post a sample code line or tell me how to do this, I'd really appreciate it.

thanks!
Attached Image (click to enlarge)
Click to Enlarge Name: sample.gif Size: 19 KB
  • #11
  • Jan 13, 2011 5:44am Jan 13, 2011 5:44am
Quoting Fudomyo
I have an off topic question about objects.

I want to change a level line in an indicator from drawing across the chart to just drawing from the current candle to the right hand side of the chart. (like the "open" and "dpp" lines in the sample picture below)

I can't find the function in the MQL4 book or on the web and it's making me a bit nuts because I know it's something simple.

If someone can post a sample code line or tell me how to do this, I'd really appreciate it.

thanks!
hi Fudomyo...

you can use trendline for that purpose

create a function to create trend line, so you can call it anywhere anytime from your code...

it's a sample code of a function and how to call it:
Inserted Code
/**************************************************************************
 *DrawTL Function
 **************************************************************************/
void DrawTL(
              string   tlname  , datetime time1       , double price1     
            , datetime time2   , double   price2      , color  tlcolor
            , int      style   , bool     ray = true  , int    width = 1
           )
{
   if(ObjectFind(tlname) != 0)
   {
      ObjectCreate(
            tlname
            , OBJ_TREND
            , 0
            , time1
            , price1
            , time2
            , price2
            );      
   }
   else
   {
      ObjectMove(tlname, 0, time1, price1);   
      ObjectMove(tlname, 1, time2, price2);
   }
   
   ObjectSet(tlname, OBJPROP_COLOR, tlcolor);
   ObjectSet(tlname, OBJPROP_RAY,   ray);
   ObjectSet(tlname, OBJPROP_STYLE, style);
   ObjectSet(tlname, OBJPROP_WIDTH, width);   
}


.....
and call it like this :


Inserted Code
double   price    = 1.55100;
string   linename = "pivot-line;
datetime time1    = Time[0];
datetime time2    = Time[0] + ( 2*Period()*60 );

DrawTL (linename, time1, price, time2, price, Red, STYLE_SOLID, true, 1);
...
  • #12
  • Last Post: Oct 23, 2011 7:31am Oct 23, 2011 7:31am
If I may, I will like your help how to resolve this problem-
for example. Ill take the histogram that is part of Ichimoku Ind.
when we like to shadow a surface with the histogram lines (witdh=5) it can be set under other objects and indicators, if it was loaded as the 1st indicator. also the Chart was set to foreground.
Now the problem is that the Bid and Ask lines are covered by the Histogram.
Is there any way to solve this issue and have those lines on foreground as well?
thanks,
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