Oops, what I meant to say ...

.LockColumnsLeft = 1 works for the left edge. I'm hoping there's a more general solution.

What do you think about my idea of floating a transparent shape over my left and rightmost headers to "cloak" these controls from mouse events that would result in their movement or sizing? Seems like a miserable hack ... on the otherhand, I can't see any downsides?

As usual, thanks for your help!

Malcolm