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Adding New Comment Line

  • #1
  • First Post: Jul 30, 2009 1:41pm Jul 30, 2009 1:41pm
Hi,

Am new to this forum and have a quick question, hopefully. I'm working on an EA (Metatrader 4) and trying to display a comment in the upper left corner of the screen using the Comment() function. I actually had no problem creating it, except I keep finding things to add to it, as it get longer and longer. What I would like to do is break it into two, to keep it nice and tidy and central to the same area.

Now I figured all I had to do was create a second comment and this would display directly below the first. But no, it doesn't work that way. It only displays the second or last comment.

Any ideas?

Thanks in advance.
  • #2
  • Jul 30, 2009 2:07pm Jul 30, 2009 2:07pm
EC you will need to end your comment line with "n", then enter to start a new line below it. You will need to do this with each new line you want to add.
End the comment section with "");

ex.. Comment( Symbol(), Period(), " Channel Size = ", DoubleToStr(Channel,0), "n"
"Curr Day Open = ",DoubleToStr(iOpen(NULL,PERIOD_D1,0),digits),"n"
"");


Happy trading
Tom
  • #3
  • Jul 30, 2009 2:57pm Jul 30, 2009 2:57pm
I think it should be \n rather than n

Here's an example of a comment of mine that spans several lines:

Inserted Code
        string str1 = "Free Margin =  " + NumberToStr(AcctFreeMgn,"T$,7.2")
           +   "\nTotal Risk =  " + NumberToStr(AcctFreeMgn*RiskPct/100,"TB$,7.2") + "  =  " + NumberToStr(RiskPct,"TB%2.2")
           + "\n\nSpread = " + NumberToStr(spr,"3.1") + " pips"
           +   "\nAmount =  " + NumberToStr(tickval,"T$,5.2") + " per pip"
           + "\n\n----- Component Order #" + NumberToStr(x,"T2") + " -----"
           + "\n\n    TP Price [" + NumberToStr(TPLevel,"TB-3.1") + "] =  " + NumberToStr(os_TP,"TB4."+dig)
           +   "\n    Entry Price [" + NumberToStr(EntryLevel,"T-3.1") + "] =  " + NumberToStr(os_price,"T4."+dig)
           +   "\n    SL Price [" + NumberToStr(SLLevel,"T-3.1") + "] =  " + NumberToStr(os_SL,"T4."+dig)
           + "\n\n    Pos Size =  " + NumberToStr(os_lots,"T,4.2") + " lots   =  " + NumberToStr(tickval*os_lots,"TR$,7.2") + " per pip"
           + "\n\n    Return (TP) =  " + NumberToStr(RetnPips,"TB3.1") + " pips  =  " + NumberToStr(RetnAmt,"TB$,7.2") + "  =  " + NumberToStr(100*DivZero(RetnAmt,AcctFreeMgn),"TBR%2.2") + "     "
           +   "\n    Risk (SL) =  " + NumberToStr(RiskPips,"T3.1") + " pips  =  "  + NumberToStr(RiskAmt,"T$,7.2") + "  =  " + NumberToStr(100*DivZero(RiskAmt,AcctFreeMgn),"TR%2.2") + "     "
           +   "\n    Return : Risk =  " + NumberToStr(DivZero(RetnAmt,RiskAmt),"TBR3.2") + " : 1";
        Comment(str1);
  • #4
  • Jul 30, 2009 3:25pm Jul 30, 2009 3:25pm
Aha! The slash may be the way to go about it. I tried the "n" within quote marks and it just treats it like text. If I don't include the quotes it says there is no variable. Will try it with the slash. Thanks.

By the way, here is the actual comment:

Comment(info_0,Lots0,info_4,com_2,info_5,info_6,TS_Hi,com_5,info_7,TB_Lo,com_6);

I'm trying to break it at info_5 and begin a new line with info_6. I should be able t figure it out (although your code looks different), but please feel free to post what it should look like, if you like.

Again, Thanks
  • #5
  • Jul 30, 2009 3:48pm Jul 30, 2009 3:48pm
Okay, this is the only thing remotely close to what twj1usa is saying, that the program will compile. But, all it does is display the two additional "n's" as part of the comment...

Comment(info_0,Lots0,info_4,com_2,info_5,"n",info_6,TS_Hi,com_5,info_7,TB_Lo,com_6,"n", "");

And no, I can't get it work with the slash either???
  • #6
  • Jul 30, 2009 4:16pm Jul 30, 2009 4:16pm
There it is!

Comment(info_0,Lots0,info_4,com_2,info_5,"n",info_6,TS_Hi,com_5,info_7,TB_Lo,com_6);

But, then again, maybe not? The slash preceding the "n" doesn't show up in the post? That's weird... Maybe this is what happened to twj1usa's post?

Anyway, thanks guys!
  • #7
  • Jul 30, 2009 4:32pm Jul 30, 2009 4:32pm
Sorry my error.. here is what you need

Comment("info_0,Lots0,info_4,com_2,i nfo_5","n",
"info_6,TS_Hi,com_5,info_7 ,TB_Lo,com_6","n",
"");

here is a test code for you

int init()
{
//---- indicators
//----

Comment(" Hello","n",
" How are you","n",
" Yes you do need the ..","n",
" I thought I had it in there","n",
" You can position the text by spacing tab","n",
" If you want post or send the code and we can look at it","n",

"info_0,Lots0,info_4,com_2,i nfo_5","n",
"info_6,TS_Hi,com_5,info_7 ,TB_Lo,com_6","n",
"");

return(0);
}

don't forget to add delete comment function..

again sorry I thought the slash was in my first post.. should have gone back and read it better.

Tom
Attached Image (click to enlarge)
Click to Enlarge Name: testcomment.gif Size: 5 KB
  • #8
  • Jul 30, 2009 4:35pm Jul 30, 2009 4:35pm
ok for some reason the slash is not appearing, put a slash between the " and the n and you will be fine....

this is a starnge thing,,going on here

Tom
  • #9
  • Jul 30, 2009 5:38pm Jul 30, 2009 5:38pm
Okay, I took a snapshot here to show what I did to get it to work. It works just fine!

Attached Image (click to enlarge)
Click to Enlarge Name: new_line.gif Size: 2 KB
  • #10
  • Jul 30, 2009 6:47pm Jul 30, 2009 6:47pm
Quoting twj1usa
ok for some reason the slash is not appearing, put a slash between the " and the n and you will be fine....

this is a starnge thing,,going on here

Tom
It looks like the FF forum treats a backslash as a special character, and deletes it. To have a single backslash appear in a FF post, type two backslashes.
  • #11
  • Jul 30, 2009 7:52pm Jul 30, 2009 7:52pm
Or you could always use the [code] tags

Inserted Code
/n

Lux
MT4 EA, Indicator and Alert Coder Since 2006
  • #12
  • Edited 9:17pm Jul 30, 2009 8:59pm | Edited 9:17pm
Here is an example of how to do this:

PHP Code
Comment (" Account Company: ", AccountCompany  () ,
              "n\ Account Number: ", AccountNumber() ,   
              "n\ Account Name: " , AccountName (), 
              "n\ Account Leverage: ", AccountLeverage(), 
              "n\ Account Margin: " , AccountMargin (),
              "n\ Account Server: ", AccountServer(),
              "n\ Account Stopout Level: ", AccountStopoutLevel(),
              "n\ Account Stopout Mode: ", AccountStopoutMode ());
-wolfe
  • #13
  • Jul 30, 2009 9:04pm Jul 30, 2009 9:04pm
Quoting luxinterior
Or you could always use the [code] tags

Inserted Code
/n
Lux
Try doing it with the backslash character ... "\" It won't work, unless you type it in twice.
  • #14
  • Jul 30, 2009 9:14pm Jul 30, 2009 9:14pm
Quoting ecTrade
Try doing it with the backslash character ... "\" It won't work, unless you type it in twice.
This: "\" is what I call a "forward" slash two posts previous. Try it. It works.
  • #15
  • Jul 31, 2009 2:51am Jul 31, 2009 2:51am
Quoting wolfe
This: "\" is what I call a "forward" slash two posts previous. Try it. It works.
Sorry to be pedantic, but:
Forward slash = /
Backslash = \

Also, referring to your code sample in post #12, the MQL4 token for newline is \n rather than n\
  • #16
  • Jul 31, 2009 9:40am Jul 31, 2009 9:40am
Quoting hanover
Sorry to be pedantic, but:
Forward slash = /
Backslash =

Also, referring to your code sample in post #12, the MQL4 token for newline is n rather than n
Thanks for the clarification hanover.

You're right, post #12, the "backslash" (calling it the correct name now) needs to be in front of the n.

When I first posted, I had it right but the backslash wasn't showing up in the code for some reason. When I went to "fix" it, I put them in the wrong place!

Take care,

-wolfe
  • #17
  • Jul 31, 2009 12:29pm Jul 31, 2009 12:29pm
Ec glad it works for you now..lesson learned about slashes not appearing on ff with this thread.

Tom
  • #18
  • Last Post: Aug 1, 2009 5:36am Aug 1, 2009 5:36am
So, is there some sort of manual available for MQL4 programming language? Although the MQL4 Reference in the MT4 MetaEditor is fairly helpful, it's not all that extensive. There was only one example given of the Comment() function, and no reference (at least that I could find) to creating a new line.

Is this something that folks bring with them from other programming languages, like Visual Basic?
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