Ctrl-0 is VFP's stated key combo to enter null values - it's not any kind of bug - if you don't like it, I would suggest just trapping for it and either eating it or remapping it to ")" or whatever they "meant' to type - KBM

>>>Help! My users are complaining that when entering data into a textbox, grid or browse window, the combination of ctrl+0 inserts a .null.
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>>Why on earth would this be a problem? It's like complaining that pressing Shift+` inserts a tilde.
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>>I went to the doctor and said "Doc, it hurts when I do this." He said, "Don't do that." :)
>
>I guess the reason would be that we are a very high volume data entry facility and the employees sometimes hit the control key when they intend on hitting the shift key.