MAKEWORD(2,2)解释
宏的原始定义：#define MAKEWORD(a, b) ((WORD)(((BYTE)(((DWORD_PTR)(a)) & 0xff)) | ((WORD)((BYTE)(((DWORD_PTR)(b)) & 0xff))) 返回值：一个无符号16位整形数。例子：WORD wVersionRequested;wVersionRequested = MAKEWORD( 2,
