if This.SelectOnEntry dodefault() nodefault endifin the textbox’s gotfocus() event, the control would no longer get focus … even if I tried to tab into it. However, there was another bit of code in the thread from Borislav Borissov as follows:
if this.SelectOnEntry nodefault TextBox::GotFocus() endif… and it worked as I was asking for, with a click on the textbox bringing exactly the same response as tabing into it.