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 event. Use
See:
This class is derived (and can use functions) from:
wxWidgets docs:
Use
Returns the direct child which receives the focus, or a (grand-)parent of the control receiving the focus.
To get the actually focused control use