Right mouse click won't work in Visio. Is there a setting?

[Melody]

I've been plugging along in Visio and suddenly the right-mouse click won't
work. It works elsewhere in window OS. I tried closing and relaunching the
program. Is there a setting I changed by mistake???

 

[Paul Herber]

I've been plugging along in Visio and suddenly the right-mouse click won't
work. It works elsewhere in window OS. I tried closing and relaunching the
program. Is there a setting I changed by mistake???

Which version of Visio?
Has it stopped working on every type of Visio object?, drawing page,
shape, stencil etc?