Home/ Questions/Q 6853849
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-27T01:33:39+00:00

I need to extract all the bits from a QString that holds a UTF-8

  • 0

I need to extract all the bits from a QString that holds a UTF-8 encoded unicode string.

To be clear, I need the bits to be stored in ideally a byte * (byte array) or alternatively a char *.

The reason I need to do this is because I want to hash the UTF-8 string and the hash function REQUIRES a byte array for the string that is to be hashed.

Any help, would be greatly appreciated.

I just want to extract the bit stream from the QString as it is stored in the QString and dump it into a byte *. Therefore, ideally, once I have this byte * equivalent, I should be able to make a new QString and initialize it in the QString’s constructor with this char * and it should be a proper UTF-8 QString.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You’re most likely looking for the QByteArray you get from QString.toUtf8().

    http://doc.qt.io/qt-5/qstring.html#toUtf8

    A QString can be re-created from a QByteArray (but be sure to use QString.fromUtf8 since the constructor for QString that takes a QByteArray assumes it’s in ASCII).

    You can get const (or non-const) access to a char* from a QByteArray…

    http://doc.qt.io/qt-5/qbytearray.html#data

    …but note that Qt has built-in support for cryptographic hashes of QByteArray, as long as you’re happy with MD4, MD5, or SHA-1:

    http://doc.qt.io/qt-5/qcryptographichash.html

    • 0