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StringCchLength, how do you use it?

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The third parameter is the place in which the string length will be placed. As opposed to strlen, StringCchLength returns an HRESULT which is used for determining if the function succeeded or not. Here is a usage example:

char myString[256];
size_t maximalStringSize = 256;
size_t targetSize;
res = StringCchLength(myString, maximalStringSize, &targetSize);
if (SUCCEEDED(res))
// OK - targetSize now contains the length of the string.
// Error - probably couldn't find /0 in the 256 first bytes of the string

P.S. Next time when asking a question, try giving some more details. This function is not so popular - I didn't know about it until you've asked :-)

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