Alan,

it is admirable the search for a justification of the VFP tantrums.

VFP is a 99% stateless enviroment ( like a combinatorial machine ),
it process Windows event messages.

On this case,
VFP do a banal task:
it process Windows Mousemove events with Mouse left button down,
and for any event with changing of items graphics area it
exec ProgrammaticChange binded tokens.

Try:
- hold down left mouse button on Form, not on listBox
- move the mouse on Listbox, ProgrammatiChange occurs !


Strong proof:
Now, leave form with listbox.
- hold down left mouse button on _SCREEN area, not on listbox form
- move the mouse on Listbox, ProgrammatiChange occurs !, and the form donnot have the focus !


Exists a Web site with "programming staff rating" on internet ?

Fabio