The MAKELONG macro creates an unsigned 32-bit value by concatenating two given 16-bit values.
DWORD MAKELONG(
WORD wLow, // low-order word of long value
WORD wHigh // high-order word of long value
);
The return value is an unsigned 32-bit value.
The MAKELONG macro is defined as follows:
#define MAKELONG(a, b) \
((LONG) (((WORD) (a)) | ((DWORD) ((WORD) (b))) << 16))
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in windef.h.
Windows Overview, Window Macros