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What is the best way to get started learning MQL4 programming language? 22 replies

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Free mql4 programming

  • #21
  • Sep 10, 2012 8:53pm Sep 10, 2012 8:53pm
Hi all! For my surprise i was not a member from this forum until now. I saw a lot of threads in the last two years, learn a lot, getting value information and avoid so many questions made by other members! I started to use an indicator few days ago, it's 3barpullback. Can you help me and edit one of them to create a popup alert when two arrows appear so the third arrow would be to prepare an entry? many thanks
Attached File(s)
File Type: mq4 3barpullback.mq4   7 KB | 641 downloads
  • #22
  • Sep 11, 2012 4:41am Sep 11, 2012 4:41am
I want to use indicator in my EA,

When indicator show arrow up that mean signal BUY

When indicator show arrow down that mean signal SELL

So how can I write this function for icustom indicator


thanks to help me


TONI
Attached File(s)
File Type: mq4 ZigZag Pointer.mq4   4 KB | 509 downloads
  • #23
  • Mar 25, 2013 2:46pm Mar 25, 2013 2:46pm
Good Day!

Does any of you guys who are good at coding know if this can be done? I understand that the problem for trendlines are the fact of figuring out where they start and stop. I was hoping the ZigZag would take care of that. So the trend line would start on the ASI indicator at the 2nd to last ZigZag point and go to the last formed ZigZag point.

Please let me know if this is possible? And if so, is there anyone out there who knows the how to.

Thank you in advance for your time.

Attached File(s)
File Type: mq4 ASI.mq4   3 KB | 528 downloads
Attached File(s)
File Type: mq4 ZigZag.mq4   6 KB | 509 downloads
  • #24
  • Mar 26, 2013 6:24pm Mar 26, 2013 6:24pm
I need an EA that will allow me to place Buy/Sell, Limit/Stop orders on an offline Basket chart. Anyone feel like having a go at this?

Bob
  • #25
  • Mar 29, 2013 6:36am Mar 29, 2013 6:36am
Hello everyone,

Can someone please add an email option when a signal is given(all 4 colors - cci's all cross 50 level)

Thank you.

4x
Attached File(s)
File Type: mq4 Forex_Freeway_2.mq4   53 KB | 467 downloads
  • #26
  • Apr 2, 2013 5:28am Apr 2, 2013 5:28am
Hi all!
If we put on a chart three macd with different parameters can someone make an indi which triggers a pop up window and a sound alert when all macd lines of those 3 indis are above or under zero line ?
For example on the attached chart a signal should be triggered only once at the opening of a bar following a vertical line and indicated by an arrow.
When you see a vertical line all the macd lines are above or below the zero line.
Thank you for your help!
Attached Image (click to enlarge)
Click to Enlarge Name: Zero line.jpg Size: 135 KB
  • #27
  • Apr 9, 2013 7:50pm Apr 9, 2013 7:50pm
I m looking for a help.
Add me on skype "zero2vm" for more details thanks

Harry singh
www.tradinstarpro.com/blogger
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  • #28
  • Apr 13, 2013 10:09am Apr 13, 2013 10:09am
Quoting jeff75
Hi all! If we put on a chart three macd with different parameters can someone make an indi which triggers a pop up window and a sound alert when all macd lines of those 3 indis are above or under zero line ? For example on the attached chart a signal should be triggered only once at the opening of a bar following a vertical line and indicated by an arrow. When you see a vertical line all the macd lines are above or below the zero line. Thank you for your help! {image}
what you need is 4tf bar indicator, search it on google and you will find it on forex-tsd forum. search the thread there.

however, the 4tf bar alert if already done, will not alert when all condition meet, and by default is lag to last higher time frame closed candle.
  • #29
  • Jun 14, 2013 7:24am Jun 14, 2013 7:24am
Just wondering if anyone could help me with some simple code, I am quite new to MQL4 programming and have an EA up and running with good results but have found some anomalies with my order management when running on a demo account, back testing the code seem to work fine.
What I'm trying to achieve is to simply close open positions and delete opposite pending orders when a new pending order is triggered, I have tried several different methods all with different problems.

Inserted Code
   if(oppositecloseonorderopen){
      if(OrdersTotal()>0){
         for(i=OrdersTotal()-1;i>=0;i--){
         OrderSelect(i,SELECT_BY_POS,MODE_TRADES);
            if(OrderSymbol()==Symbol() && OrderMagicNumber()==magic && OrderType()==OP_BUY){
               if(OrderOpenTime()==TimeLocal()){
//             if(OrderOpenTime()==TimeCurrent()){
//             if(OrderOpenTime()-TimeCurrent()==0){
//             if(NormalizeDouble(OrderOpenPrice(),Digits)==NormalizeDouble(Ask,Digits)){
               RefreshRates();            
               close(OP_SELL);
                  if(totalbuy>0){
                  delete(OP_SELLSTOP);
                  delete(OP_SELLLIMIT);
                  }
               }
            }
            if(OrderSymbol()==Symbol() && OrderMagicNumber()==magic && OrderType()==OP_SELL){
               if(OrderOpenTime()==TimeLocal()){
//             if(OrderOpenTime()==TimeCurrent()){
//             if(OrderOpenTime()-TimeCurrent()==0){
//             if(NormalizeDouble(OrderOpenPrice(),Digits)==NormalizeDouble(Bid,Digits)){
               RefreshRates();
               close(OP_BUY);
                  if(totalsell>0){
                  delete(OP_BUYSTOP);
                  delete(OP_BUYLIMIT);
                  }
               }
            }
         }
      }
   }

Is there a more robust way of identifying when a pending order triggers entry.
"if(OrderOpenTime()==TimeCurrent()){" seems to work 90% of the time but occasionally does not triggers leaving me confused as to why this occurs on demo account & not during back testing.

Any help would be greatly appreciated.
  • #30
  • Jun 14, 2013 3:32pm Jun 14, 2013 3:32pm
Perhaps I can share some insight on how time values work in MQL4 that will point you in right direction. Dates and time are actually integer values tha represent the number of seconds since Jan 1 , 1970. In back testin, CurrentTime() is modelled, so it isn't reliable. I thnk its only accurate to the minute. So you need to find another approach to do back testing.

In live trading, you will not receive a tick every second, so doing a check for equalit like you have will not work 100%.The best way is to do a grater than comparision
  • #31
  • Jun 15, 2013 3:45am Jun 15, 2013 3:45am
Thanks CodeMeister for your insight, I have actually tried that approach as well "if(TimeCurrent()>=OrderOpenTime()) {".
This imposes yet another problem that will trigger on any open position, although I may be able to give ">" a value to allow for response time, say +5 or something.
I was under the impression that "TimeCurrent()" is actually the server time, which is what confuses me as it should equal the open time 100% regardless of the ticks.
I'd prefer to search for "OrderType()==OP_BUYSTOP" but comparing "OrderOpenPrice()" without +/- gap cant work either.
  • #32
  • Jun 15, 2013 12:57pm Jun 15, 2013 12:57pm
I think you have made the wrong assumption. True the CurrentTime() is the broker's server time, but your loop to check orders doesn't execute until the next tick after the order is open. The next tick usually arrives within a split second and in that situation it will match the OrderOpenTime(). But there is no guarantee that it will arrive that quickly. In fact, the gap between ticks is unknown. Again comparing based on equality is not good coding practice and you should avoid it. There are other methods using inequality.
  • #33
  • Jun 15, 2013 1:16pm Jun 15, 2013 1:16pm
Thanks again for your help, as I stated I'm very new to MQL coding and are really just learning via trial & error, if I were to use ">=" how could I then distinguish which order has been opened, I agree with you, it's certainly not the best method, but I'm still lost as to what method would be best to identify triggered pending orders.
  • #34
  • Jun 15, 2013 1:55pm Jun 15, 2013 1:55pm
I haven't had much experience with pending orders. But I did write logic to detect newly opened or closed trades. I used a static variable with the timestamp of the newest order and looked for orders whose open time was greater than that value and then updated the variable with the new one. It should work in your case, but if it won't, I have nothing else to suggest.
  • #35
  • Jun 16, 2013 9:27am Jun 16, 2013 9:27am
Quoting CodeMeister
...Dates and time are actually integer values tha represent the number of seconds since Jan 1 , 1970.
Just to be pedantic, Dates and time uses datetime in MQL4 which is an unsigned int in C/C++:

long int (long) Long integer 4bytes signed: -2147483648 to 2147483647 unsigned: 0 to 4294967295
Politics is the womb in which war develops.
  • #36
  • Dec 30, 2014 6:15am Dec 30, 2014 6:15am
Make these indicators compatible for ea programming there buffers does not work when fractals formed
Attached File(s)
File Type: mq4 Fractals.mq4   6 KB | 324 downloads
File Type: mq4 FractalLevels.mq4   4 KB | 313 downloads
  • #37
  • Dec 31, 2014 10:50pm Dec 31, 2014 10:50pm
help me please, i need indicator for alert sound and popup if show candlestick >=15 pips with option for wick/body only
and also show how high pips the candle

sorry for my very bad english

help me please, or someone can coding it
its may very help to for other

thank you very much
  • #38
  • Jan 2, 2015 10:30am Jan 2, 2015 10:30am
Hello everyone and happy new year.
I have this problem to resolve:
when i open multiple trade and the total balance go up and down i can not recognize in a fast way what pair/trade are earning or loosing.
It will be possible to make an indicator that can show in real time the % Up or Down ( or a number in PIP) for the single trade
with the possibility to have a reset button (or just refresh the page),so,when i am in front of the PC and want to see in that
moment how going on the trades just push the button (or refresh the page) and reset to 0 every trade and watch in that moment
what pair are loosing and what pair are earning?
Mmmmm sorry for my English,hope somebody can understand what i mean.

I try in this way:
With MT4 we can now see the profit/loss in pips instead of the deposit currency as in the pic below:

Attached Image


Is perfect what i need but would like to have a reset button of the pips so, after the reset, i can understand which pair is going up and which is going down.
In attachment an indicator can maybe use for this project,just delete the "Trades-Lots-O Pnl-C Pnl" and add the pips value with the possibility of reset.

Attached Image


Attached File(s)
File Type: mq4 Basket_Stats.mq4   7 KB | 402 downloads


Thanks in advance
  • #39
  • May 1, 2015 9:17am May 1, 2015 9:17am
Is this thread still active or is it dead?
Blindly following others will make you blind!
  • #40
  • Jun 18, 2015 3:10pm Jun 18, 2015 3:10pm
i got the same problem with this trendline alert push.zip ,I have mod it to popup a alert window , I also have the PriceAlert_Ver_1-2.mq4 ,and mod it as well ,it work on touched the bid , it only sends one alert per candle , but it draw its own two trendline , i try to use the static datetime lastbar function but it not compile , it got 9 error(s), 5 warning(s) , i like the trendline alert push better,hope someone can help out with it .
Inserted Code
static datetime lastbar;
   datetime curbar = Time[0];
   if(lastbar!=curbar)
   {
      lastbar=curbar;
      return (true);
   }
   else return(false);
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