The QFile class provides an interface for reading from and writing to files.| doc.qt.io
The QImageReader class provides a format independent interface for reading images from files or other devices.| doc.qt.io
The QSize class defines the size of a two-dimensional object using integer point precision.| doc.qt.io
The QRect class defines a rectangle in the plane using integer precision.| 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 QColor class provides colors based on RGB, HSV or CMYK values.| doc.qt.io
The QApplication class manages the GUI application's control flow and main settings.| doc.qt.io
The QList class is a template class that provides a dynamic array.| doc.qt.io
The header file defines Qt logging types, functions and macros.| doc.qt.io
The QStringList class provides a list of strings.| 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
The QGuiApplication class manages the GUI application's control flow and main settings.| doc.qt.io
The QCoreApplication class provides an event loop for Qt applications without UI.| doc.qt.io