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Pushing MT4 DDE to its limit

  • #1
  • First Post: Sep 6, 2008 4:20am Sep 6, 2008 4:20am
Everywhere you go on Google, you can find DDE quote export examples. There are numerous excel spreadsheet examples where you can import quotes.

Standard DDE variables are found at the bottom of this page:
http://72.14.205.104/search?q=cache:...lnk&cd=1&gl=us


I want to know a few things that I can't find.

1) Can you use DDE to IMPORT data into MT4?

2) Can you export anything other than quotes?

3) Are there more variables available than the ones listed at the bottom of the page I linked to above? (where do you find them?)

The MT4 Help document only talks about quote variables. If the answer to #2 is YES and the answer to #3 is NO, is it possible to PROGRAM custom DDE variables?


I am interested in exporting my order stack info to another application (open tickets, stop losses, take profits, etc)
  • #2
  • Sep 6, 2008 10:07am Sep 6, 2008 10:07am
Quoting tdion
Everywhere you go on Google, you can find DDE quote export examples. There are numerous excel spreadsheet examples where you can import quotes.

Standard DDE variables are found at the bottom of this page:
http://72.14.205.104/search?q=cache:...lnk&cd=1&gl=us


I want to know a few things that I can't find.

1) Can you use DDE to IMPORT data into MT4?

2) Can you export anything other than quotes?

3) Are there more variables available than the ones listed at the bottom of the page I linked to above? (where do you find them?)

The MT4 Help document only talks about quote variables. If the answer to #2 is YES and the answer to #3 is NO, is it possible to PROGRAM custom DDE variables?


I am interested in exporting my order stack info to another application (open tickets, stop losses, take profits, etc)
Does it have to be DDE? You can write a DLL and export a function which you can call from an EA. This way you have access in the DLL to anything you have access within an EA. If you want to do it realtime you can use COM to talk to Excel.
  • #3
  • Sep 6, 2008 7:01pm Sep 6, 2008 7:01pm
Quoting tdion
I want to know a few things that I can't find.

1) Can you use DDE to IMPORT data into MT4?
No

Quoting tdion
2) Can you export anything other than quotes?
No, only quotes.

Quoting tdion
I am interested in exporting my order stack info to another application (open tickets, stop losses, take profits, etc)
The easiest way to do this is to use the ML4 File commands to write a .csv file. Your software can read the file to get the info. For more details,
http://docs.mql4.com/files
  • #4
  • Edited 9:18pm Sep 6, 2008 7:14pm | Edited 9:18pm
thank you

i am worried about file collisions.... i am building a trade copier similar to Terranin's.... the file will be checked several times a minute....

worried about locking issues, etc.
  • #5
  • Sep 6, 2008 8:12pm Sep 6, 2008 8:12pm
Did you try the delphi sendmessage dll posted on your other thread? I have not tried it yet - maybe tomorrow - but it looks like it will do what you want. I want something similar for Ninja Trader (C#).
  • #6
  • Sep 6, 2008 8:57pm Sep 6, 2008 8:57pm
Quoting tdion
thank you

i am worried about file collisions.... i am building a trade copier similar to Tarranin's.... the file will be checked several times a minute....

worried about locking issues, etc.
If it has to be a file and you want to avoid locks what you can do is to write in a new file each time and name e.g. MT4 can write a file with the name 20080807115300120 which is based on date/time stamp to the hundreds of a second. When you read those files you can delete them in the program which does the reading after they have been read successfully but you will have to constantly check the directory for new files.
  • #7
  • Jul 5, 2009 4:33pm Jul 5, 2009 4:33pm
Quoting tdion
Everywhere you go on Google, you can find DDE quote export examples. There are numerous excel spreadsheet examples where you can import quotes.

Standard DDE variables are found at the bottom of this page:
http://72.14.205.104/search?q=cache:...lnk&cd=1&gl=us


I want to know a few things that I can't find.

1) Can you use DDE to IMPORT data into MT4?

2) Can you export anything other than quotes?

3) Are there more variables...
Thanx for the link since i'm interested with DDE,
i was also expecting DDE to be able to export more than just quotes
but i guess it's not available on MT4 T_T
  • #8
  • Aug 11, 2009 7:39pm Aug 11, 2009 7:39pm
I am building a dynamic trade size calculator in Excel 2003 sourcing data via DDE from my MT4 platform.

Now, my Excel hangs as soon as I click 'update' upon opening my trade size calculator spreadsheet for the day.

I've made no changes to the spreadsheet since the prior day.

This happened occasionally before, and a reboot has fixed the problem, but the reboot no longer fixes it. I open MT4 and Excel before I open any other application, but still no success - Excel just hangs after clicking to update the data.

Any ideas on what I could do to get things working again?
  • #9
  • Last Post: Nov 4, 2009 3:18pm Nov 4, 2009 3:18pm
I had the same problem (same goal) - only with Excel 2007. Boston Technologies did not have any good enough answers.
Finally, I kept the DDE links to all the pairs in the original Example excel worksheet (changed the name) and left it in the MT4 directory. I did my own calculations and tricks in a separate excel file - pointing to the relevant DDE worksheet cells. This did the trick.
Rgds
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