[allenbrunson]

the appropriate language for any given situation is largely dependent on the environment you're writing for. writeroom is a macosx program, so it's overwhelmingly likely that it was written in objective-c. you can google up beginner's guides all day long.

[bmj]

Dark Room (http://they.misled.us/dark-room), the Windows version, is written in C#.

[TooMuchNick]

Sorry, I should have realized the OS would be very important. I want to try writing a couple of Mac apps.