Win32

From RemObjects Software

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Win32 is the short name for the 32-bits version of Windows. It's usually used to denote from Windows 95 upwards, even though there used to be a 32bits layer for Windows 3.11. The Win32 api is located in several dlls, most of them with 32 in the name (although Win64 uses the same names with 32 in it), like kernel32.dll, user32.dll and gdi32.dll.

Windows on Windows 64 (WOW64)

Win64, the 64bits version of Windows includes a 32bits compatibility layer to run 32bits applications on the 64bits OS called Windows on Windows. Applications running under Wow64 have their own System directory (SysWow64) and their own registry hives, though through API calls they can access the 64bits hive too.

See Also

• Non-RemObjects Products and Names