>>I'm working on my very first VFP 3.0 application. In my Add/Edit/Delete Form, I am adding code to the LostFocus event of a date field to make sure the date entered/edited is within a certain range. If the date entered is not valid, a message box pops up informing the user of this. I then want the date data entry field to have the focus. However, the ThisForm.txtDate_of_Accident.Setfocus command does not work. I can substitute any other control name and it works fine.
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>If you are already on that control, you don't need to use the LostFocus() for validation. Use the Valid() event and RETURN 0 when it failed.

Or if there is some other reason you want to use Lostfocus, just put Nodefault before the Setfocus to move where you want to.