The wxPython tutorial

Introduction to wxPythonhttp://www.zetcode.com/wxpython/introduction/InheritanceThere is a specific relation among widgets in wxPython. Thisrelation is developed by inheritance. The inheritance is acrucial part of the object oriented programming. Widgets forma hierarchy. Widgets can inherit functionality from otherwidgets. Existing classes are called base classes, parents, orancestors. The widgets that inherit we call derived widgets,child widgets or descendants. The terminology is borrowedfrom biology.Inheritance of a buttonSay we use a button widget in our application. The buttonwidget inherits from 4 different base classes. The closest classis the wx.Control class. A button widget is a kind of a smallwindow. All widgets that appear on the screen are windows.Therefore they inherit from wx.Window class. There areobjects that are invisible. Examples are sizers, device contextor locale object. There are also classes that are visible butthey are not windows. For example a color object, caret objector a cursor object. Not all widgets are controls. For examplewx.Dialog is not a kind of control. The controls are widgets6 de 9 27/04/2008 0:59