A widget used to catch events.
The primary purpose of this class is to provide those widgets that do
not have native event handling capabilities with the ability to receive
and act on user-driven input.
The most common usage is its application on images. Sometimes, you may
want images that you have displayed on your application to respond to
events. GtkEventBox helps you do just that. Of
course, you can always use this class on any widget that does not have
its own window.
This class is a subclass of GtkBin and therefore
has its own window.
Creates a new event box.