QPaintEvent

The QPaintEvent class contains event parameters for paint events. More

Inheritance diagram of PySide2.QtGui.QPaintEvent

Synopsis

Functions

Detailed Description

Paint events are sent to widgets that need to update themselves, for instance when part of a widget is exposed because a covering widget was moved.

The event contains a region() that needs to be updated, and a rect() that is the bounding rectangle of that region. Both are provided because many widgets cannot make much use of region() , and rect() can be much faster than region() .boundingRect().

Automatic Clipping

Painting is clipped to region() during the processing of a paint event. This clipping is performed by Qt’s paint system and is independent of any clipping that may be applied to a QPainter used to draw on the paint device.

As a result, the value returned by clipRegion() on a newly-constructed QPainter will not reflect the clip region that is used by the paint system.

See also

QPainter update() repaint() paintEvent()

class PySide2.QtGui.QPaintEvent(paintRect)

PySide2.QtGui.QPaintEvent(paintRegion)

Parameters
PySide2.QtGui.QPaintEvent.rect()
Return type

PySide2.QtCore.QRect

Returns the rectangle that needs to be updated.

PySide2.QtGui.QPaintEvent.region()
Return type

PySide2.QtGui.QRegion

Returns the region that needs to be updated.