TestExperts
There is a test expert advisor in OTPyTestPikaEA.mq4
Attach the EA to a chart when you have a RabbitMQServer running. Then you open a command window and go to your directory and run the following command to see the messages the expert is broadcasting:
python OTMql427/PikaListener.py "#"
You can select which RabbitMQ messages you want to subscribe to from one or more of: ticks bars timer retval
To see just ticks, do
python OTMql427/PikaListener.py "tick.#"
To see timer events and ticks, do
python OTMql427/PikaListener.py "tick.#" "timer.#"
Read the RabbitMQ documentation for further details of using # and * to select the messages you are interested in; you can select by type of message, the currency pair, period, the hex value of the ChartID.
The interval for timer events can be set when you attach the expert: {{{ extern int iTIMER_INTERVAL_SEC = 10; }}
The information that is put on a tick is supplied by the function sBarInfo which puts together the information you want send to a remote client on every bar. Change it to suit your own needs.
You can have many experts running on many charts. There is only one Pika.connection.Connection object, and it is shared by all charts. The total number of charts using the connection is kept in the global variable fPY_PIKA_CONNECTION_USERS. When the last expert is removed, this number drops to 0, and the Connection is shut down.
You should always remove any OTMql4Py experts before you shut down Mt4. It may not initialize properly if you start Mt4 with an OTMql4Py expert already attached. You may have to remove the expert and restart Mt4 if it does not initialize properly.
Specifically, if you load an OTMql4Py expert and the Mt4 log shows a message about exceptions.SystemError, it means that the Python DLL did not load properly, and you must restart if you want to use an OTMql4Py expert. You should get a pop-up Alert from Mt4 to alert you of this.
For the moment there is no installer: just git clone or download the zip from github.com and unzip into an empty directory. Then recursively copy the folder MQL4 over the MQL4 folder of your Metatrader installation. It will not overwrite any Mt4 system files; if it overwrites any OTMql4Py files, the files are in fact identical (e.g. __init__.py). See Installation .