The Old New Thing

What does QueryThreadCycleTime actually count?

April 29, 2016 Apr 29, 2016 04/29/16

Raymond Chen

Whatever the CPU wants.

Is there an API for redrawing a specific window from another application?

April 28, 2016 Apr 28, 2016 04/28/16

Raymond Chen

Once again, turns out to be the wrong question.

How does Explorer calculate “Size on disk”?

April 27, 2016 Apr 27, 2016 04/27/16

Raymond Chen

Very simplistic.

Why can’t I pin a document to the taskbar?

April 26, 2016 Apr 26, 2016 04/26/16

Raymond Chen

Because that's not what the taskbar is.

Getting MS-DOS games to run on Windows 95: Too much EMM memory

April 25, 2016 Apr 25, 2016 04/25/16

Raymond Chen

Now that you got it, you need to find a place to put it.

Should I be concerned that WaitForSingleObject is taking a large percentage of my performance test’s execution time

April 22, 2016 Apr 22, 2016 04/22/16

Raymond Chen

What you've got there, my friend, is a WaitForSingleObject stress test.

It rather involved being on the other side of this airtight hatchway: Invalid parameters from one security level crashing code at the same security level (doesn’t get old)

April 21, 2016 Apr 21, 2016 04/21/16

Raymond Chen

You never crossed a security boundary.

Why are mouse wheel messages delivered to the focus window instead of the window under the mouse?

April 20, 2016 Apr 20, 2016 04/20/16

Raymond Chen

Keyboard modifiers.

Why is there a screen that says “It is now safe to turn off your computer”?

April 19, 2016 Apr 19, 2016 04/19/16

Raymond Chen

Because that's when you know.

Getting MS-DOS games to run on Windows 95: Too much memory!

April 18, 2016 Apr 18, 2016 04/18/16

Raymond Chen

Another case of intentionally under-reporting memory.