func (l *ListBox) Clear() {
	l.items = make([]string, 0)
	l.currSelection = -1
	l.topLine = 0
}
func (l *ListBox) Clear() {
	l.items = make([]string, 0)
	l.currSelection = -1
	l.topLine = 0
}
func ( l * ListBox ) Clear ( ) { l . items = make ( [ ] string , 0 ) l . currSelection = - 1 l . topLine = 0 }
// Clear deletes all ListBox items
Clear deletes all ListBox items