Event handling

We now have a good background for some practical work with matplotlib events. We are now ready to explore the nitty-gritty. Let's begin with the list of events that matplotlib supports:

Event name	Class	Description
button_press_event	MouseEvent	The mouse button is pressed
button_release_event	MouseEvent	The mouse button is released
draw_event	DrawEvent	The canvas draw occurs
key_press_event	KeyEvent	A key is pressed
key_release_event	KeyEvent	A key is released
motion_notify_event	MouseEvent	Motion of the mouse
pick_event	PickEvent	An object in the canvas is selected
resize_event	ResizeEvent	The figure canvas is resized
scroll_event	MouseEvent	The scroll wheel of the mouse is rolled
figure_enter_event	LocationEvent	The mouse enters a figure
figure_leave_event	LocationEvent	The mouse leaves a figure
axes_enter_event	LocationEvent	The mouse enters an axes object
axes_leave_event	LocationEvent	The mouse leaves an axes object

Note...