What language is WIN-32 written in?
I think mostly in C, critical part of the kernel are probably coded in asm
As far as I know Win32 is just a description not actually anything tangible (or virtual in the case of computers). But if your referring to windows I assume its written in C++
Even some of the inner guts seem to have been written in C or C++, rather than ASM. It would be interesting to see what sort of "workbench" a full OS is written on.
It's mostly in C, though some parts of the 16 bit code were hand coded in asm for speed on x86's. NT was C from the start for compatability with other platforms.