using 2 Layouts, one for the browse mode and one for printing/preview.
You could have a container field over the top of the items you want to mask. Have a global container field 'Container_g' contain solid white.
Set the field 'Mask' to be:
If ( (Get(WindowMode) = 0 ; Container_g ; "" )
To allow you to still click on the buttons etc you could set the Mask field to be no entry in browse mode.
Could you tell us why you would want to achieve this, most people want it exactly the other way round?
PS: Haven't actually tried any of that, by the way.
Thanks a lot, I got it. I have tried both ways and it work.