_fullpath API of windows takes relative path and gives the corresponding absolute path. But, it fails if the relative path is greater than 255 characters.
Is there any other API available in Windows which can convert the relative path to absolute path and doesn’t have the problem mentioned above?
I think the closest equivalent would be the GetFullPathName function. You can explicitly call the Unicode version of it and prepend
\\?\to the path to allow for more than MAX_PATH characters.