Bitwise operators and flags

&, |, ^, ~, << and >> work on 64-bit Integers with C semantics, and on nothing else. They're mainly for combining flag constants, testing bits in values that builtins return, and unpacking colors.

Task	Expression
Combine flags	FileNotify.FileName | FileNotify.LastWrite
Test a flag	(mask & FileNotify.Size) != 0
Set a flag	mask = mask | flag;
Clear a flag	mask = mask & ~flag;
Toggle a flag	mask = mask ^ flag;
Test bit n	((value >> n) & 1) == 1 or (value & (1 << n)) != 0
Even / odd	(n & 1) == 0
Unpack 0xRRGGBB	r = (c >> 16) & 0xFF; g = (c >> 8) & 0xFF; b = c & 0xFF;
Key held (from KeyboardGetKeyState)	(state & 0x8000) != 0. The high bit of the Win32 SHORT is sign-extended, so state < 0 works too.
Key toggled (Caps Lock and so on)	(state & 1) != 0

DisplayGetPixelColorFromPoint returns 0xRRGGBB packed into an Integer, or -1 when the point isn't on any monitor.