Good times. In particular, I remember having to implement my own strings, because for a text adventure you often want to have access to strings longer than 255 characters...
Sadly, I never managed to make the jump from writing console applications with TP to writing proper Mac GUI apps. But "Inside Macintosh" cost an absolute fortune at the time (for a 10 year-old kid at any rate), so I ended up scraping enough money together to buy another text book whose name escapes me. I must have read the first few chapters about a million times - they talked about handles and graphics ports etc, but I could never get any code from them to run in TP (I think they were assuming that you would be using MPW?).
Which brings me to the point of this long rambling message - did TP really support graphics programming on the Mac? I know my version of TP was an official bought copy, so we had the manual, but I don't remember ever seeing anything that explained GUI programming in there.