TagLib polish alfababet issue

[spinax]

Hi i got a little problem with the TagLib library. Now i use to translate strings between QString and TagLib::String this:

#define 	TStringToQString(s)   QString::fromUtf8(s.toCString(true))
#define     Qt4QStringToTString(s)    TagLib::String(s.toUtf8().data(), TagLib::String::UTF8)

#define 	TStringToQString(s)   QString::fromUtf8(s.toCString(true))
#define     Qt4QStringToTString(s)    TagLib::String(s.toUtf8().data(), TagLib::String::UTF8)

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but when i try read file with polish alphabetic character in the name i got this:
QString(correctly) :

D:\ThisIsThePlaceŁŚÓ.mp3

after translate to TagLib::String

TagLib: Could not open file D:\ThisIsThePlaceAZÓ.mp3

Maybe someone have idea how to fix this?