The Old New Thing

Converting between UTF-8 strings and UTF-16 strings in C++/WinRT

Raymond Chen September 22, 2021 Sep 22, 2021 09/22/21

A pair of conversion functions.

The CertUtil program will decode Windows error codes, and in a variety of formats

Raymond Chen September 21, 2021 Sep 21, 2021 09/21/21

Even more versatile than NET HELPMSG.

What does this mean? The caller specified wait timed out before the operation completed because a host termination is in queued

Raymond Chen September 20, 2021 Sep 20, 2021 09/20/21

An error message written with infrastructure-colored glasses.

Adventures in application compatibility: The case of the wild instruction pointer that, upon closer inspection, might not be so wild after all

Raymond Chen September 17, 2021 Sep 17, 2021 09/17/21

The search for clues leads to an unexpected place.

The C++ implicit assignment operator is a non-ref-qualified member, even if the base class’s assignment has a ref-qualifier

Raymond Chen September 16, 2021 Sep 16, 2021 09/16/21

Does that count as dis-qualification?

How do I set the alpha channel of a GDI bitmap to 255?

Raymond Chen September 15, 2021 Sep 15, 2021 09/15/21

Most things destroy the alpha channel, but there's a way to bring it back, or at least make it opaque.

Microspeak: Persona

Raymond Chen September 14, 2021 Sep 14, 2021 09/14/21

A template for a prototypical user.

The C++/WinRT query_interface_tearoff extension point, and using it for COM aggregation

Raymond Chen September 13, 2021 Sep 13, 2021 09/13/21

For adding your own QueryInterface magic.

Ordering asynchronous updates with coroutines, part 5: Bowing out via cancellation

Raymond Chen September 10, 2021 Sep 10, 2021 09/10/21

Using the built-in way of stopping a coroutine.

Ordering asynchronous updates with coroutines, part 4: Bowing out, explicit version

Raymond Chen September 9, 2021 Sep 9, 2021 09/9/21

Realizing you're not the one.