Keyborard Shortcuts

For MatplotlibCurveWidget, the supported keyboard shotcuts are:

Prssed Key	Function
a	Turn on/off auto scale
g	Turn on/off grid
l	Turn on/off legend
m	Turn on/off minor ticks
r	Force refresh
s	Change y-axis scale
t	Tight layout on/off
?	Show this message box
Esc	Exit this message box

When running applications based on mpl4qt, press the above keys will instantly apply actions on the figure, press ? will pop up a dialog listing the short help message, just as the following image shows: