This sounds so simple....I want to be able to toggle a check mark next to
one of my Excel custom menu items (the item is a CommandBarButton object).
Exactly like you see under the Windows menu for the active window.

I figured it would be just a matter of setting a "Checked" property of the
button, or setting the MsoButtonStyle or MsoButtonState....but I can't find
it! Do I have to set an image instead?

Thanks,

Derrick