These classes provide support for graphics (2D, and with OpenGL, 3D), image encoding, decoding, and manipulation, sound, animation, printing etc.
| QBitmap | Monochrome (1-bit depth) pixmaps |
| QBrush | Defines the fill pattern of shapes drawn by a QPainter |
| QColor | Colors based on RGB or HSV values |
| QColorDialog | Dialog widget for specifying colors |
| QDirectPainter | Direct access to the video hardware |
| QFont | Font used for drawing text |
| QFontDatabase | Information about the fonts available in the underlying window system |
| QFontInfo | General information about fonts |
| QFontMetrics | Font metrics information |
| QFontMetricsF | Font metrics information |
| QGL | Miscellaneous identifiers used in the Qt OpenGL module |
| QGLColormap | Used for installing custom colormaps into QGLWidgets |
| QGLContext | Encapsulates an OpenGL rendering context |
| QGLFormat | The display format of an OpenGL rendering context |
| QGLWidget | Widget for rendering OpenGL graphics |
| QIcon | Scalable icons in different modes and states |
| QIconEngine | Abstract base class for QIcon renderers |
| QImage | Hardware-independent pixmap that allows direct access to the pixel data, and can be used as a paint device |
| QImageReader | Format independent interface for reading images from files or other devices |
| QImageWriter | Format independent interface for writing images to files or other devices |
| QMatrix | 2D transformations of a coordinate system |
| QMovie | Convenience class for playing movies with QImageReader |
| QPaintDevice | The base class of objects that can be painted |
| QPainter | Performs low-level painting on widgets and other paint devices |
| QPalette | Color groups for each widget state |
| QPen | Defines how a QPainter should draw lines and outlines of shapes |
| QPicture | Paint device that records and replays QPainter commands |
| QPictureIO | Parameters for loading and saving pictures |
| QPixmap | Off-screen, pixel-based paint device |
| QPixmapCache | Application-wide cache for pixmaps |
| QPoint | Defines a point in the plane |
| QPolygon | Vector of points |
| QPolygonF | Vector of floating point points |
| QPrinter | Paint device that paints on a printer |
| QRect | Defines a rectangle in the plane that uses integer point accuracy for coordinates |
| QRectF | Defines a rectangle in the plane using floating point coordinates for accuracy |
| QRegion | Clip region for a painter |
| QSize | Defines the size of a two-dimensional object |
| QSizeF | Defines the size of a two-dimensional object using floating point values for accuracy |
| QSound | Access to the platform audio facilities |
| QStylePainter | Convenience class for drawing QStyle elements inside a widget |
