I've had complaints from a client about this beeping effect and researched the issue. Although I haven't yet found a fix, I can confirm some details about the effect.
If you have a continuous form, or simply open a table in datasheet view, you can scroll records using the mouse wheel. In this situation:
- If you click on any field of any record and then scroll the mouse wheel, the system will beep.
- If you scroll the mouse wheel up and down, the system will beep each time the active field/control passes under the cursor.
- If you move the cursor over any other field, other than the active field/control, there is no beep when you scroll.
- If you click the record selector (left of the list of fields), there is no beep when you scroll.
I think that it is clear that the mouse scroll is causing an illegal navigation move on the active control and the standard control editing processing is beeping in protest. Effectively, it only occurs in "edit mode". It is the active control which is beeping, not the form itself.
Perhaps these observations will inspire someone to find the underlying cause and devise workaround!