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Multimedia, Graphics, and Printing

These classes provide support for graphics (2D, and with OpenGL, 3D), image encoding, decoding, and manipulation, sound, animation, printing etc.

See also this introduction to the Qt coordinate system.

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
QGLPixelBuffer	Encapsulates an OpenGL pbuffer
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