DLL to email image from mt4? | Forex Factory

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DLL to email image from mt4?

  • #1
  • First Post: Aug 22, 2019 9:08am Aug 22, 2019 9:08am
Has anyone found (or know how to create) a dll that will work and will allow you to email a screenshot from mt4?

Thanks!
  • #2
  • Aug 25, 2019 1:13am Aug 25, 2019 1:13am
I dont know dll for this, but I know it is possible to save screenshot from command line:
https://docs.mql4.com/chart_operations/chartscreenshot
You only need an external program, which dilever this picture.

May help...
  • #3
  • Aug 25, 2019 10:13am Aug 25, 2019 10:13am
Quoting Jakey
Has anyone found (or know how to create) a dll that will work and will allow you to email a screenshot from mt4? Thanks!
You don't need an extra DLL to do that. You need to understand that in email terms an image is an attachement, and the provided MQL built-in functionality does not support sending attachements via email, it only supports (plain) text messages.

To use the full capabilities of email you have to use another mail client than the MetaTrader terminal. Such a client is called MTA (mail transfer agent) and there are plenty of free implementations for all operating systems. On Windows you can use Windows MTAs and - if you install Cygwin - also Linux MTAs. Especially the Linux MTAs make it very easy to send any kind of attachement with your email. Another advantage of an external MTAs (instead of MetaTrader) is that you can send mail whereever you want. You are not restricted to the one account linked to MetaQuotes.

To give you an example: I installed Cygwin and use eMail (available as ready-made package in the Cygwin installer). Sending an email with attachement is as easy as that:
Inserted Code
email -s "subject line..." -attach screenshot1.png -attach screenshot2.png [email protected]

Like MetaTrader you can configure such an MTA to use for example your GMail account to forward the email to, so the real sending is done by Google. It's always recommended to use a reputated mail service provider for the final sending. Theoretically you can send email directly from your local Windows machine, but in practice all email providers receiving such email will block it and treat it as spam.

Using built-in Windows tools to send email is possible but limited and discouraging.
Other Linux command-line mail clients: https://www.tecmint.com/best-command...nts-for-linux/

Principle workflow of calling a CLI mail client from MQL:
Inserted Code
#import "kernel32.dll"
    int  WinExec(string lpCmdLine, int cmdShow);
#import
 
string cmd = "email -s \"subject line...\" -attach screenshot1.png -attach screenshot2.png [email protected]";
int result = WinExec(cmd, SW_HIDE);    // in practice cmd needs to be an ANSI string, so it may have to be converted to a uchar[]

You can find a working example in my framework here but it's not translated and somewhat bloated, just for reference. I didn't yet had the time to rewrite it.

The possibilities with that approach are infinite.
It takes blood, sweat and enough tears to wash away the blood.
  • #4
  • Last Post: Aug 26, 2019 3:51am Aug 26, 2019 3:51am
Another option for mailing file attachements is the FxBlue Email library which indeed is a separate DLL. It requires the .NET framework. This library can't be configured like a regular MTA, all mail server parameters need to be passed to each function call sending mail.

Attached is the PDF manual for convenience.
Attached File(s)
File Type: pdf FX Blue - MT4 email library.pdf   450 KB | 644 downloads
It takes blood, sweat and enough tears to wash away the blood.
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