A toolbar does NOT move focus away from active controls on a form.
Lost Focus event therrefor does NOT run. If you want that, but Lostfocus actually IS run, then you have to have code in the Toolbar buttons doing something like _screen.activeform.activecontrol.SetFocus(), which triggers the event chain valid/lostfocus/when/gotfocus.
This is typical code of a toolbar save button, for example, because without this the current edited value of the active control is not saved.
Bye, Olaf.