Old Carbon program question

[sparklight]

I have an old prototype game written in Carbon / C++ for Mac. I'd like to update the ancient graphics in time for a show, coming very soon. This is no time to learn Cocoa.

Question: In the Carbon world, what is the best way to import a file of bitmaps that I drew in some bitmap-editor and draw pieces of it onto my screen? What is the best file format to use for this purpose?