The IB Version now supports improved setup and chart backfill for currency pairs, e.g. EUR.USD, JPY.USD, etc. When adding such instruments via the Setup: Instruments window. choose "Forex" as the security type. IRT automatically sets up the Underlying Symbol and the Currency for the instrument by extracting this information from the ticker symbol, e.g. the ticker EUR.USD results in EUR as Underlying and USD as currency. In the IB version of IRT it is important to specify the requested exchange (override exchange) in Setup: Instruments as well, typically IDEALPRO or IDEAL. Intra-day data for Forex instruments having exchange IDEALPRO can be downloaded directly from IB.
You may also enter brand new ticker
symbols directly into a quotepage. The IB version of IRT will recognize
any ticker symbol of the form XXX.YYY as a "Forex" (security type)
instrument with XXX being the underlying symbol and YYY being the
currency. Such tickers will be setup automatically with security type
Forex and exchange IDEALPRO. If you wish to specify some other exchange
you may enter Forex symbols into the ticker cell of a quotepage using
the format XXX.YYY:EXCH:SESS where EXCH represents an alphabetic
exchange name and SESS represents the numeric session id. For example,
you may enter JPY.USD:IDEAL:33 into a new row in a quotepage and IRT
will define a new Forex instrument with underlying symbol JPY and
currency USD; IDEAL will be setup as the override (requested) exchange
and 33 will be the new instrument's session.