Enter an expression in the Tooltip Expression box to display a Tool Tip when the mouse pointer is over the field on a form. Normally, you enter either:
· Literal: A text Tool Tip enclosed in quotation marks.
· Function: A call to a user-defined function that returns the Tool Tip.
If you’re using a function, you can create your function from the Code page of the Visual FoxPro Project Manager.
Field When Expression Property