Technology behind cellphone programing

What is the language used for programing microsoft windows cellular phones?
Is there a specific place to find source code?

What programming language should I look at?
Where to find resources?

I am trying to find codes for the bottom socket on the cell phone to give out certain signals, so I can decode 'em and control servos
with my cell phone.

thanks for help

First and foremost if you are coding something for a Microsoft platform, you are more than likely going to need to use a Microsoft programming language, therefore MSDN should be your first port of call. There are plenty of articles and samples on there for pretty much everything you need.

If the device is running a fairly recent version of Windows Mobile or CE you can use any of the .NET CLR languages - C#, VB.NET Managed C++ - or for "lower level" coding use good ol' C++.

The easiest option is probably one of the managed .NET languages, however, there isn't any native support for handling any ports on the phone - therefore you will need to either using a pre-built library (such as OpenNetCF) or handle the platform invokes yourself - not the nicest of tasks if your new to coding.

Hope it helps

thank you
this explained everything