The Old New Thing
Practical development throughout the evolution of Windows.
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Aug 5, 2025
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10
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Why are Windows semiannual updates named H1 and H2?
To address an unconscious bias.
Aug 4, 2025
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20
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1
How can I read more than 4GB of data from a file in a single call to ReadFile?
You can't, but you can try to fake it.
Aug 1, 2025
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2
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Two related questions about keeping track of PIDs of IPC clients
Since you're doing IPC, you may as well let IPC do the work for you.
Jul 31, 2025
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7
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A consequence of the weird wReserved value at the start of the DECIMAL structure
It overwrites things by accident.
Jul 30, 2025
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2
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In C++/WinRT, how can I await multiple coroutines and capture the results?, part 0
If you don't really care about what happens if something goes wrong.
Jul 29, 2025
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16
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2
Why is there a window with no name blocking Windows shutdown?
They never expected you to see it.
Jul 28, 2025
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1
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API design note: Don’t make up multiple names for the same thing
It may be obvious to you, but that's because you wrote it.
Jul 25, 2025
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3
How can I confirm in the Windows debugger that I’m looking at a COMDAT-folded function?
Ask for all the names for an address.
Jul 24, 2025
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6
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3
How can I wait until a named object (say a mutex) is created?
You can't, but maybe you can wait for something else.