QPaintDeviceWindow¶
Convenience subclass of
QWindow
that is also aQPaintDevice
. More…

Inherited by: QOpenGLWindow, QRasterWindow
Synopsis¶
Virtual functions¶
def
paintEvent
(event)
Detailed Description¶
QPaintDeviceWindow
is like a regularQWindow
, with the added functionality of being a paint device too. Whenever the content needs to be updated, the virtualpaintEvent()
function is called. Subclasses, that reimplement this function, can then simply open aQPainter
on the window.Note
This class cannot directly be used in applications. It rather serves as a base for subclasses like
QOpenGLWindow
.See also
-
PySide2.QtGui.QPaintDeviceWindow.
paintEvent
(event)¶ - Parameters
event –
QPaintEvent
Handles paint events passed in the
event
parameter.The default implementation does nothing. Reimplement this function to perform painting. If necessary, the dirty area is retrievable from the
event
.
-
PySide2.QtGui.QPaintDeviceWindow.
update
()¶ Marks the entire window as dirty and schedules a repaint.
Note
Subsequent calls to this function before the next paint event will get ignored.
Note
For non-exposed windows the update is deferred until the window becomes exposed again.
-
PySide2.QtGui.QPaintDeviceWindow.
update
(region) - Parameters
region –
QRegion
Marks the
region
of the window as dirty and schedules a repaint.Note
Subsequent calls to this function before the next paint event will get ignored, but
region
is added to the region to update.Note
For non-exposed windows the update is deferred until the window becomes exposed again.
-
PySide2.QtGui.QPaintDeviceWindow.
update
(rect) - Parameters
rect –
QRect
Marks the
rect
of the window as dirty and schedules a repaint.Note
Subsequent calls to this function before the next paint event will get ignored, but
rect
is added to the region to update.Note
For non-exposed windows the update is deferred until the window becomes exposed again.