The Old New Thing

2022 year-end link clearance

December 30, 2022 Dec 30, 2022 12/30/22

Raymond Chen

Closing the book on another year.

When I create a waitable timer with a callback, do I have to wait alertably on that specific timer before the callback will run?

December 30, 2022 Dec 30, 2022 12/30/22

Raymond Chen

Any alertable wait will do.

How can I detect programmatically whether Windows is an N or KN version?

December 29, 2022 Dec 29, 2022 12/29/22

Raymond Chen

Don't check the version, just check the feature.

After importing a TLB, how do I convert from one type of _com_ptr_t to another?

December 28, 2022 Dec 28, 2022 12/28/22

Raymond Chen

Digging into the source code.

Why can’t I print when I boot Windows into audit mode?

December 27, 2022 Dec 27, 2022 12/27/22

Raymond Chen

It's not all there.

The worst-selling Microsoft software product of all time: OS/2 for the Mach 20

December 26, 2022 Dec 26, 2022 12/26/22

Raymond Chen

Count 'em on one hand.

The case of the recursively hung WM_DRAW­CLIPBOARD message

December 23, 2022 Dec 23, 2022 12/23/22

Raymond Chen

Understanding why it's happening and how you can avoid it.

Is there a fixed virtual address that the system promises never to use for anything, so I can use it?

December 22, 2022 Dec 22, 2022 12/22/22

Raymond Chen

Everything is up for grabs.

Running some UI code on a timer at a higher priority than your usual timer messages, or without coalescing

December 21, 2022 Dec 21, 2022 12/21/22

Raymond Chen

You can build your own timer system.

Why doesn’t the BitLocker wizard let me save the BitLocker key on an encrypted drive?

December 20, 2022 Dec 20, 2022 12/20/22

Raymond Chen

Don't lock your keys in the car.