I learned about OOP from a Turbo Pascal v5.5 book circa 1993. Drawing triangles, squares, circles, all the good stuff. Turbo Vision library was a powerful demonstration of the power of OOP which made MSFT MFC look like a mess in comparison.
I am convinced the The Turbo Pascal I had (I cannot remember the version) did not support OOP. If it did, the books I was reading never covered it. I did use Delphi a few years later during the College days. It was OK but I never loved the language. I thought it added the OOP side of things pretty well. To me, compared to C, Pascal was just a little bloated to write by comparison.
I think syntax has improved since then. Last time I touched Delphi was 2002.
Yes, MFC is a mess. As the years pass I would have been interested in trying NextStep during the prime years. It looked 10 years ahead over Microsofts Visual Studio in the mid-to-late 90s. A tool that evolved well into the Apple world.
