Common Win32 API macros.

Win32Macros.cs

public static byte LOBYTE(ushort a) => 
    (byte)(a & 0xFF);

public static byte HIBYTE(ushort a) => 
    (byte)((a >> 8) & 0xFF);

public static ushort HIWORD(uint a) => 
    (ushort)((a >> 16) & 0xFFFF);

public static ushort LOWORD(uint a) => 
    (ushort)(a & 0xFFFF);

public static ushort MAKEWORD(byte a, byte b) => 
    (ushort)((a & 0xFF) | (b << 8));

public static int MAKELONG(ushort a, ushort b) => 
    (a & 0xFFFF) | ((b & 0xFFFF) << 16);

public static UIntPtr MAKEWPARAM(ushort a, ushort b) => 
    new UIntPtr((uint)MAKELONG(a, b));