Information about the coordinate system used by the paint system.| doc.qt.io
The QPicture class is a paint device that records and replays QPainter commands.| 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 QPixmap class is an off-screen image representation that can be used as a paint device.| doc.qt.io