CODEWITHSUNDEEP
winapiutf-8
gordonwd
gordonwd

Reputation: 4587

Sorting UTF-8 strings in Win32 program

My Win32/MFC program builds up a list of names, sorting them alphabetically as it puts them into the list. When it supported only ASCII strings, this worked by a simple char-by-char string comparison. But now that I want to accept UTF-8 strings, I need a more complex scheme since --for example -- all forms of the letter "a" should be equivalent from an alphabetizing standpoint.

Is there a function somewhere that can do this, or will I have to craft my own comparison table to sort these strings?

Upvotes: 1

Views: 723

Answers (1)

Wim Coenen
Wim Coenen

Reputation: 66783

The CompareStringEx Function probably does what you need.

But note that this function (and the Windows API in general) does not use the UTF-8 encoding to represent unicode strings. Instead, it uses the UTF-16 encoding (aka "wide character strings"). You might just be confusing the UTF-8 encoding with unicode in general. But if you are really dealing with UTF-8 encoded strings then you can do the conversion from UTF-8 to wide character strings with the MultiByteToWideChar Function.

Upvotes: 2

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