Type ChildFocusEvent

object --+            
         |            
    Object --+        
             |        
         Event --+    
                 |    
      CommandEvent --+
                     |
                    ChildFocusEvent

A child focus event is sent to a (parent-)window when one of its child windows gains focus, so that the window could restore the focus back to its corresponding child if it loses it now and regains later.

Notice that child window is the direct child of the window receiving the event, and so may not be the actual widget recieving focus if it is further down the containment heirarchy. Use wx.Window.FindFocus to get the widget that is actually receiving focus.