The aim of project is to get 2 different forex broker's price and buy and sell by these difference automatically

how can I go txt and go in back and will it be realtime data ? and is there any software that can do this ?

It is not about exploiding a price feed lag or any other technologic tricks that can exploit the forex broker. It is something that the fact of Decentralized and unregulated forex market provides some opportunies to traders. Market maker price ...

Thank you for answer but could you please explain it more detailed ? DDE link name remains "MT4" even if I change the name of program and directory. How can I change the dde name "MT4" for reaching my aim ?

No sometimes some market maker brokers gives 1.4000 when the ecn prices are 1.4003 and I think this is because they have bigger amount of long positions and want customers to make loss when they want to close their positions. After this is realized ...