The header file provides various math functions.| doc.qt.io
Information about the coordinate system used by the paint system.| doc.qt.io
The QTransform class specifies 2D transformations of a coordinate system.| doc.qt.io
The QPaintDevice class is the base class of objects that can be painted on with QPainter.| doc.qt.io
The QPaintEvent class contains event parameters for paint events.| doc.qt.io
The QFont class specifies a query for a font used for drawing text.| doc.qt.io
The QPen class defines how a QPainter should draw lines and outlines of shapes.| doc.qt.io
The QPainter class performs low-level painting on widgets and other paint devices.| doc.qt.io