Posts for devblogs.microsoft.com on Sep 2026

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9 What's the highest legal FILETIME? Is it safe to use? - The Old New Thing

8 std::call_once vs. std::async - The Old New Thing

7 Comparing exception behavior of magic statics, std::call_once, and std::async - The Old New Thing

6 Debugging walkthrough: Access violation on nonsense instruction, episode 3 - The Old New Thing

5 A brief history of Windows scroll bar shortcuts - The Old New Thing

4 C++ reminder: Function-local static variables are initialized only once, even if it looks like they get initialized multiple times - The Old New Thing

3 Magic statics vs. std::call_once - The Old New Thing

2 No, really, you need to pass all unhandled messages to DefWindowProc, part 2 - The Old New Thing

1 When working with Win32 FILETIME, don't forget that you have std::chrono now - The Old New Thing