I don't know about Object Pascal to C++, but calling C libraries is a no-brainier. There is a bit of a definition wrapping, and then the C library looks like a

I don't know about Object Pascal to C++, but calling C libraries is a no-brainier. There is a bit of a definition wrapping, and then the C library looks like a pascal one, and unlike most interpreted/JIT/GC/etc languages where the programmer or wrapper has to jump through hoops to transform the data structures to match an in memory C structure, pascal just goes ahead and uses the same datastructure. This yields a far more transparent/efficient interface. Even pascal strings degrade to C strings by skipping the size header, and assuring they are null terminated before calling the C libraries.