graphics function in latest Angband release

Hello all,

I'm attempting to learn the structure of the Angband source code so that I might help develop the game. I finished a set of functions that allow you to deposit and withdraw gold at your home, but I'd really like to work with the graphics, and create graphics based inventory screens (with drag-n-drop equipment, etc). I made one for another application, and would like to port it.

I'd like to know: What function, in particular, draws the updated bitmap graphics in the main window? That might give me a headstart to chase done the rest.

I'd appreciate the pointer. Thanks.