Wich codewarrior here can show me the path - Regarding dynamic liberaries

Hi, This is your next-door Code-noob Writing after having decided to come from
The industry of graphic design to the light-side of the force, coding.
So I have been Flirting with this Idea for some while now.

I can Kick the living hell out of html css and a wee bit of java,
but this ain't gonna cut it for what I am looking for.
I am what greek men like you would call a barbarian to coding.

Initially to save you your time, I Lurked over this site looking for A topic affecting this very subject, before starting this subject.
But I couldnt find one or more that that specifically diagnosed and adressed the questions I have.

30 second Pitch:
I enjoy this plugin set by Astute graphic studios So much, it nearly halved my production time for some applications,
It got me thinking, if something similar could be developed for score sheet editors
Like Musescore, guitar pro, Sibelus, Forte, Finale, and such.

If I have a bunch of files allready written in Midi, Like say Over 6 consecutive hours of music.
All categorised and named, And i want to make a library that will fit into all if not any of these programs,
Where do I start, what coding language is Required?

This thread has been moved from Visual c++ programming as question asking which programming language to use.

Also please note when posting that less flowery language would be better!

Copy that!
Thank you!

I'm excited over what will come of it.

Whether you can make it work for other programs depends on whether those programs offer extensibility which is usually in the form of an SDK (software development kit). If a kit is offered for a particular program, the program language(s) are usually already decided for you and the sdk will offer code sample for the language(s).