QueueControlFlags

In a DISPATCHER_HEADER whose Type is QueueObject (0x04), the byte at offset 0x01 was a BOOLEAN named Abandoned, starting with Windows Vista, until Windows 8.1 broke it into bit fields:

Mask Definition Versions
0x01 
UCHAR Abandoned : 1;
 6.3 and higher
0x02 
UCHAR DisableIncrement : 1;
 6.3 and higher
  
UCHAR QueueReservedControlFlags : 6;
 10.0 and higher

This page was created on 7th October 2017 from material that was first published on 20th June 2016. It was last modified on 9th October 2022.

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