Since pyqtgraph relies on Qt's GraphicsView framework, most of its graphics functionality is implemented as QGraphicsItem subclasses. This has two important consequences: 1) virtually anything you want to draw can be easily accomplished using the functionality provided by Qt. 2) Many of pyqtgraph's GraphicsItem classes can be used in any normal QGraphicsScene.
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plotdataitem plotitem imageitem graphitem viewbox linearregionitem infiniteline roi graphicslayout plotcurveitem scatterplotitem isocurveitem axisitem textitem errorbaritem bargraphitem arrowitem fillbetweenitem curvepoint curvearrow griditem scalebar labelitem vtickgroup legenditem gradienteditoritem histogramlutitem gradientlegend buttonitem graphicsobject graphicswidget graphicsitem uigraphicsitem graphicswidgetanchor dateaxisitem