The Old New Thing

The theory behind the IHttpFilter interface

November 17, 2023 Nov 17, 2023 11/17/23

Raymond Chen

Layering features on top of each other.

What happened to the custom exception description I threw from a C++/WinRT IAsyncAction?

November 16, 2023 Nov 16, 2023 11/16/23

Raymond Chen

The description is just a courtesy and is not part of the API contract.

Why does calling a coroutine allocate a lot of stack space even though the coroutine frame is on the heap?

November 15, 2023 Nov 15, 2023 11/15/23

Raymond Chen

Heap elision optimization kicks in, and doesn't kick out.

Starting on the other side of this airtight hatchway: Running a program that leaks memory

November 14, 2023 Nov 14, 2023 11/14/23

Raymond Chen

There are a lot of things you can do to consume memory.

What is the difference between UuidToString, StringFromCLSID, StringFromIID, and StringFromGUID2?

November 13, 2023 Nov 13, 2023 11/13/23

Raymond Chen

Different ways of stringizing a GUID.

The case of the invalid argument exception from a method that takes no arguments

November 10, 2023 Nov 10, 2023 11/10/23

Raymond Chen

Where did the invalid argument come from?

A clarification on the multithreading constraints of the Encrypt­Message function

November 9, 2023 Nov 9, 2023 11/9/23

Raymond Chen

Reading a sentence in the context of the whole paragraph.

How can I get information about media playing on the system, and optionally control their playback?

November 8, 2023 Nov 8, 2023 11/8/23

Raymond Chen

Going to the global system media transport controls world.

“Stop sharing this folder” is not the same as “Never share this folder”

November 7, 2023 Nov 7, 2023 11/7/23

Raymond Chen

It stops sharing the folder, but that doesn't prevent you from starting it again.

Why doesn’t reduction by modulo work for floating point values?

November 6, 2023 Nov 6, 2023 11/6/23

Raymond Chen

Working out why it works for integers and seeing what goes wrong.