Obsolete Members for QString

The following members of class QString are deprecated. They are provided to keep old source code working. We strongly advise against using them in new code.

Public Functions

Static Public Members

Related Non-Members

Member Function Documentation

[deprecated in 6.4] qsizetype QString::count() const

This function is deprecated since 6.4. We strongly advise against using it in new code.

Use size() or length() instead.

This function overloads count().

Same as size().

[static, deprecated in 6.0] QString QString::fromUcs4(const uint *str, qsizetype size = -1)

This function is deprecated since 6.0. We strongly advise against using it in new code.

Use the char32_t overload instead.

[static, deprecated in 6.0] QString QString::fromUtf16(const ushort *str, qsizetype size = -1)

This function is deprecated since 6.0. We strongly advise against using it in new code.

Use the char16_t overload instead.

Related Non-Members

[noexcept, since 6.2, deprecated in 6.8] QString operator""_qs(const char16_t *str, size_t size)

This function is deprecated since 6.8. We strongly advise against using it in new code.

Use _s from Qt::StringLiterals namespace instead.

Literal operator that creates a QString out of the first size characters in the char16_t string literal str.

The QString is created at compile time, and the generated string data is stored in the read-only segment of the compiled object file. Duplicate literals may share the same read-only memory. This functionality is interchangeable with QStringLiteral, but saves typing when many string literals are present in the code.

The following code creates a QString:

 auto str = u"hello"_qs;

This function was introduced in Qt 6.2.

See also QStringLiteral and QtLiterals::operator""_qba(const char *str, size_t size).