I have a fairly straightforward input page.
It contains a listbox in which users may enter a few rows of information, which is then all saved at once (when users save). The problem was that after saving I disable the controls on the screen (after all, the user is done), but the last cell in the listbox where the user was remained active.
The way I was able to delete it:
• Set focus to a textfield (which is about to be disabled)
• Set listindex of listbox to -1
Disabling the listbox left the cell editable.
If I’ve missed something, please let me know. Otherwise, I hope this helps.