单项选择题
Private Sub Command2_Click() HScroll1.Min=0 HScroll1.Max=List1.ListCount HScroll1.Value=0 Timer1.Interval= Timer1.Enabled=True End Sub Private Sub Timer1_Timern If List1.ListCount>0 Then List1.RemoveItem 0 HScroll1.Value=HScroll1.Max--Listl.ListCount Else Timer1.Enabled= MsgBox"全部删除!" End If End Sub