The Old New Thing

Hidden constraints on the result type in Concurrency Runtime tasks

Raymond ChenAugust 12, 2020Aug 12, 202008/12/20

If you are using the Concurrency Runtime task<T> to represent asynchronous activity, there are some hidden constraints on the type T. If you violate these constraints, the compiler will complain, but perhaps not in an obvious way.¹ If you try to create a task<T> where T does not have a public default constructor, then you get an...

How can I tell whether the user has disabled toast notifications for my app?

Raymond ChenAugust 10, 2020Aug 10, 202008/10/20

The ToastNotifier settings will tell you.

How do I make my accelerators apply only when used in the main window and not when the user is using a modeless dialog?

Raymond ChenAugust 7, 2020Aug 7, 202008/7/20

Sometimes you feel like an accelerator table, sometimes you don't.

How can CharUpper and CharLower guarantee that the uppercase version of a string is the same length as the lowercase version?

Raymond ChenAugust 4, 2020Aug 4, 202008/4/20

Does it have a special under-the-table deal with the Unicode Consortium?

What does the /ALTERNATENAME linker switch do?

Raymond ChenJuly 31, 2020Jul 31, 202007/31/20

In case of emergency, go look for something else.

What’s the deal with OLDNAMES.LIB?

Raymond ChenJuly 30, 2020Jul 30, 202007/30/20

For backward compatibility with pre-standard C.