The Old New Thing

Optimizing code to darken a bitmap, part 2

March 8, 2022 Mar 8, 2022 03/8/22

Raymond Chen

Exploiting parallel arithmetic.

Optimizing code to darken a bitmap, part 1

March 7, 2022 Mar 7, 2022 03/7/22

Raymond Chen

Starting with the basics.

If the slim reader/writer lock (SRWLOCK) doesn’t remember who the shared lock owner is, does that mean it’s okay to acquire it recursively?

March 4, 2022 Mar 4, 2022 03/4/22

Raymond Chen

No, but you sort of knew that deep down.

Filtering out fake keyboards from the GetRawInputDeviceList function

March 3, 2022 Mar 3, 2022 03/3/22

Raymond Chen

Maybe look to see if it has any keys.

How can I detect whether the system has a keyboard attached? On the GetRawInputDeviceList function

March 2, 2022 Mar 2, 2022 03/2/22

Raymond Chen

You can enumerate the input devices and see if there's a keyboard.