The QFile class provides an interface for reading from and writing to files.| doc.qt.io
The QBrush class defines the fill pattern of shapes drawn by QPainter.| doc.qt.io
The QHash class is a template class that provides a hash-table-based dictionary.| doc.qt.io
The QImage class provides a hardware-independent image representation that allows direct access to the pixel data, and can be used as a paint device.| doc.qt.io
The QDataStream class provides serialization of binary data to a QIODevice.| doc.qt.io
The QColor class provides colors based on RGB, HSV or CMYK values.| doc.qt.io
The QSet class is a template class that provides a hash-table-based set.| doc.qt.io
The QFont class specifies a query for a font used for drawing text.| doc.qt.io
The QDateTime class provides date and time functions.| doc.qt.io
The header file includes Qt fundamental type declarations.| doc.qt.io
The QPixmap class is an off-screen image representation that can be used as a paint device.| doc.qt.io
The QMap class is a template class that provides an associative array.| doc.qt.io
The QList class is a template class that provides a dynamic array.| doc.qt.io
The QVariant class acts like a union for the most common Qt data types.| doc.qt.io
The QByteArray class provides an array of bytes.| doc.qt.io
The QString class provides a Unicode character string.| doc.qt.io