The QRegion class specifies a clip region for a painter.| doc.qt.io
The QPoint class defines a point in the plane using integer precision.| doc.qt.io
The QBitmap class provides monochrome (1-bit depth) pixmaps.| doc.qt.io
The QRect class defines a rectangle in the plane using integer precision.| doc.qt.io
The Qt namespace contains miscellaneous identifiers used throughout the Qt library.| doc.qt.io
The QPixmap class is an off-screen image representation that can be used as a paint device.| doc.qt.io
The QVariant class acts like a union for the most common Qt data types.| doc.qt.io