The PyQt4.QtGui.QWidget.paintEvent is an event handler function in the Qt framework's QtGui module for Python. It is called whenever a widget needs to update its appearance or needs to be redrawn on the screen. This event is usually triggered by the system when it detects that a portion of the widget needs to be updated, such as when the widget is resized or a specific area is invalidated. By implementing and customizing this paintEvent function, developers can define their own painting code to draw custom graphics, images, or text onto the widget's surface, giving it a personalized look and visual behavior.
Python QWidget.paintEvent - 43 examples found. These are the top rated real world Python examples of PyQt4.QtGui.QWidget.paintEvent extracted from open source projects. You can rate examples to help us improve the quality of examples.