如何使用VB编写一个简单的小程序

Dim sec, min, h

Private Sub Command1_Click()

Timer1.Enabled = True

h = Text1.Text

min = Text2.Text

sec = Text3.Text

Timer2.Enabled = False

End Sub

Private Sub Command2_Click()

End

End Sub

Private Sub Form_Load()

Form1.BackColor = &HFFFF00

Timer1.Enabled = False

Timer1.Interval = 1000

Timer2.Enabled = True

Timer2.Interval = 1000

Text1.Text = 2

Text2.Text = "00"

Text3.Text = "00"轮握

Command2.Caption = "腊册庆退出"

Command1.Caption = "开始倒计时"姿罩

End Sub

Private Sub Timer1_Timer()

If sec >0 Then

sec = sec - 1

Else:

If (min >0 Or h >0) Then

sec = 59

End If

If min >0 Then

min = min - 1

Else:

If h >0 Then

min = 59

End If

If h >0 Then

h = h - 1

Else: Timer1.Enabled = False

CreateObject("SAPI.SpVoice").Speak "GAME OVER!"

Form1.BackColor = &HFF

End If

End If

End If

Text1.Text = h

Text2.Text = min

Text3.Text = sec

Label6.Caption = Now

End Sub

Private Sub Timer2_Timer()

Label6.Caption = Now

End Sub

在窗体添判帆加3个文本框、一个Label和一个按钮，不要修改他们的名称，然后写代掘返雹码如下：

Private Sub Command1_Click()

Dim H As Single,M As Single,N As Single,T As Single

H=Text1.text

M=Text2.text

N=Text3.text

T=H/(M-N)

Label1.Caption="青蛙从高" &H "米的井中爬出需要" &T &"天"

End Sub

运行程序，在3个文本框分别世悉输入H,M和N，就可以在Label1中看到结果

---