Timer2Flags

Windows 8.1 introduced new kernel objects of types Timer2NotificationObject (0x18) and Timer2SynchronizationObject (0x19). In the DISPATCHER_HEADER at the beginning of each such objects, the byte at offset 0x01 has bit fields that are specific to these new types of object:

Mask Definition Versions
0x01
UCHAR Timer2Inserted : 1;
6.3 and higher
0x02
UCHAR Timer2Expiring : 1;
6.3 and higher
0x04
UCHAR Timer2CancelPending : 1;
6.3 and higher
0x08
UCHAR Timer2SetPending : 1;
6.3 and higher
0x10
UCHAR Timer2Running : 1;
6.3 and higher
0x20
UCHAR Timer2Disabled : 1;
6.3 and higher
 
UCHAR Reserved1 : 2;
6.3 only
UCHAR Timer2ReservedFlags : 2;
10.0 and higher