The LOWORD macro retrieves the low-order word from the given 32-bit value.
WORD LOWORD(
DWORD dwValue // value from which low-order word is retrieved
);
The return value is the low-order word of the specified value.
The LOWORD macro is defined as follows:
#define LOWORD(l) ((WORD) (l))
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in windef.h.
Windows Overview, Window Macros, HIWORD, LOBYTE