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How To Check Characters of File Names and Paths on Windows

How can I check a file name to see if it has extension or not ? How can I check whether a given file name has an extension part? How can I check whether a given file name contains only allowed characters? How can I check whether a given path string contains only allowed characters? What is HasExtension? What is HasValidFileNameChars? What is HasValidPathChars? C++ Builder has a lot of specific…
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