设窗体上有一个标签Label1和一个计时器Timer1,Timer1的Interval属性被设置为1000,Enabled属性被设置为True。要求程序运行时每秒在标签中显示一次系统当前时间。以下可以实现上述要求的事件过程是_______________。 Private Sub Timer1_Timer() Label1.Caption = True End Sub B) Private Sub Timer1_Timer() Label1.Caption = Time$ End Sub C) Private Sub Timer1_Timer() Label1.Interval = 1 End Sub D) Private Sub Timer1_Timer() For k = 1 To Timer1.Interval Label1.Caption = Timer Next k End Sub
A、Private Sub Timer1_Timer() Label1.Caption = True End Sub
B、Private Sub Timer1_Timer() Label1.Caption = Time$ End Sub
C、Private Sub Timer1_Timer() Label1.Interval = 1 End Sub
D、Private Sub Timer1_Timer() For k = 1 To Timer1.Interval Label1.Caption = Timer Next k End Sub