An unsigned 16-bit PowerKeys modifier-state bitfield captured with an input event: generic Ctrl/Shift/Alt/Win are 0x0001/0x0002/0x0004/0x0008; left/right variants occupy 0x0010 through 0x0800.
0x0001
0x0002
0x0004
0x0008
0x0010
0x0800
An unsigned 16-bit PowerKeys modifier-state bitfield captured with an input event: generic Ctrl/Shift/Alt/Win are
0x0001/0x0002/0x0004/0x0008; left/right variants occupy0x0010through0x0800.