| QBitmap | Monochrome (1-bit depth) pixmaps | 
| QBrush | Defines the fill pattern of shapes drawn by QPainter | 
| QColor | Colors based on RGB, HSV or CMYK values | 
| QColormap | Maps device independent QColors to device dependent pixel values | 
| QConicalGradient | Used in combination with QBrush to specify a conical gradient brush | 
| QDirectPainter | Direct access to the underlying hardware in Qt for Embedded Linux | 
| QFont | Specifies a font used for drawing text | 
| QFontMetrics | Font metrics information | 
| QFontMetricsF | Font metrics information | 
| QGenericMatrix | Template class that represents a NxM transformation matrix with N columns and M rows | 
| QGradient | Used in combination with QBrush to specify gradient fills | 
| QIcon | Scalable icons in different modes and states | 
| QIconEngine | Abstract base class for QIcon renderers | 
| QIconEngineV2 | Abstract base class for QIcon renderers | 
| QImage | Hardware-independent image representation 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 | 
| QLine | Two-dimensional vector using integer precision | 
| QLineF | Two-dimensional vector using floating point precision | 
| QLinearGradient | Used in combination with QBrush to specify a linear gradient brush | 
| QMargins | Defines the four margins of a rectangle | 
| QMovie | Convenience class for playing movies with QImageReader | 
| QPaintDevice | The base class of objects that can be painted | 
| QPaintEngine | Abstract definition of how QPainter draws to a given device on a given platform | 
| QPainter | Performs low-level painting on widgets and other paint devices | 
| QPainterPath | Container for painting operations, enabling graphical shapes to be constructed and reused | 
| QPainterPathStroker | Used to generate fillable outlines for a given painter path | 
| QPalette | Contains 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 | 
| QPixmap | Off-screen image representation that can be used as a paint device | 
| QPixmapCache | Application-wide cache for pixmaps | 
| QPoint | Defines a point in the plane using integer precision | 
| QPointF | Defines a point in the plane using floating point precision | 
| QPolygon | Vector of points using integer precision | 
| QPolygonF | Vector of points using floating point precision | 
| QRadialGradient | Used in combination with QBrush to specify a radial gradient brush | 
| QRect | Defines a rectangle in the plane using integer precision | 
| QRectF | Defines a rectangle in the plane using floating point precision | 
| QRegion | Specifies a clip region for a painter | 
| QSize | Defines the size of a two-dimensional object using integer point precision | 
| QSizeF | Defines the size of a two-dimensional object using floating point precision | 
| QStylePainter | Convenience class for drawing QStyle elements inside a widget | 
| QSvgGenerator | Paint device that is used to create SVG drawings | 
| QSvgRenderer | Used to draw the contents of SVG files onto paint devices | 
| QSvgWidget | Widget that is used to display the contents of Scalable Vector Graphics (SVG) files | 
| QTransform | Specifies 2D transformations of a coordinate system | 
| QVector2D | Represents a vector or vertex in 2D space |