Can I use a tooltip or hover effect in a reportlab document?

Question

Can I use a tooltip or hover effect in a reportlab document?

I am doing an interactive graph using reportlab. Each bar on the chart is a link to information related to the data represented by this bar, and this functionality works well.

When I hover over a panel, I see the URL that the panel refers to. I would like to add text to this “tooltip”, for example, the name of the webpage I am linking to.

I looked through several mailing list threads and searched for the reportlab user guide, but I can not find anything that gives a definitive answer. Is it possible?

from reportlab.pdfgen import canvas
from reportlab.lib.units import inch

c = canvas.Canvas("hover.pdf")

#  This square links to google.com.
#  How do I make the message "Go to google" appear when the user
#    hovers over this square?
c.rect(0*inch, 0*inch, 1*inch, 1*inch, fill=1)
c.linkURL('http://google.com', (0*inch, 0*inch, 1*inch, 1*inch), relative=1)

c.showPage()
c.save()