The Old New Thing (original) (raw)

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Why does C++ think my class is copy-constructible when it can’t be copy-constructed?

Jun 6, 2025

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Why does C++ think my class is copy-constructible when it can’t be copy-constructed?

Raymond Chen

Raymond Chen

You said that you had a copy constructor, even though it can't be compiled.

Why do some Windows functions fail if I pass an unaligned Unicode string?

Jun 5, 2025

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Why do some Windows functions fail if I pass an unaligned Unicode string?

Raymond Chen

Raymond Chen

Well, if you don't align it, then you've already broken the rules.

Riffing on a typo in the name of the opera <I>Turandot</I>

Jun 4, 2025

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Riffing on a typo in the name of the opera Turandot

Raymond Chen

Raymond Chen

On the dot.

How can I programmatically find the network path by which a folder has been shared?

Jun 4, 2025

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How can I programmatically find the network path by which a folder has been shared?

Raymond Chen

Raymond Chen

There is no direct query. You'll have to infer it.

The symbolism of the magnifying glass is not universal

Jun 3, 2025

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The symbolism of the magnifying glass is not universal

Raymond Chen

Raymond Chen

Just making things bigger?

Stating the obvious about debugging an invalid parameter error when freeing memory

Jun 2, 2025

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Stating the obvious about debugging an invalid parameter error when freeing memory

Raymond Chen

Raymond Chen

Writing it down for posterity.

Using an oracle to see where your code is producing the wrong output

May 30, 2025

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Using an oracle to see where your code is producing the wrong output

Raymond Chen

Raymond Chen

If there is a reference implementation, then use it as a check.

The case of creating new instances when you wanted to use the same one

May 29, 2025

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The case of creating new instances when you wanted to use the same one

Raymond Chen

Raymond Chen

C++ language backward compatibility makes legal what you had hoped wasn't.

How do I convert a WIC bitmap back to a GDI <CODE>HBITMAP</CODE>?

May 28, 2025

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How do I convert a WIC bitmap back to a GDI HBITMAP?

Raymond Chen

Raymond Chen

You can copy the bits into a DIB section.

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