建立新的项目文件，添加模块文件，并填写如下代码：

Public Declare Function FlashWindow _

Lib "user32" (ByVal hwnd As Long, _

ByVal bInvert As Long) As Long　

在窗体中添加两个按钮和一个计时器，并用设置以下属性：

command1.caption="开始"

command2.caption="停止"

timer1.interval=500 '每0.5秒闪烁一次

timer1.enabled=false

Private Sub Timer1_Timer()

a& = FlashWindow(Me.hwnd, 1)

End Sub

Private Sub Command1_Click()

Timer1.Enabled = True

End Sub

Private Sub Command2_Click()

Timer1.Enabled = False

End Sub