单项选择题
Private Sub Command2_Click()
HSeroll1.Min=0
HScroll1.Max=List1.ListCount
HScroll1.Value=0
Timer1.Interval=______
Timer1.Enabled=True
End Sub
Private Sub Timer1_Timer()
If List1.ListCount>0 Then
List1.RemoveItem 0
HScroll1.Value=HSeroll1.Max-List1.ListCount
Else
Timer1.Enabled=______
MsgBox"全部删除!"
End If
End Sub