Can I use a language other than MQL4 on Metatrader 4?

 

Hello,

 can I use a language other than MQL4 on Metatrader4? For example, could I program on my own language and then interface with Metatrader?

 
Not recommended but you can create a DLL in any language. Mq4 passes the chart to DLL and DLL return what trading operations to perform. So you need to learn mq4 and interfacing to a DLL - now your task is three times harder.