vb中的timer控件.当按下按钮1时label中的时间开始计时60秒,之后按钮2才可以按下

在窗体上画1个Label(标签) 2个CommandButton(按钮) 1个 Timer(记时器)

Private Sub Command1_Click()
Timer1.Enabled = True
End Sub

Private Sub Form_Load()
Label1.Caption = "10"
Command2.Enabled = False
Command1.Enabled = True
Timer1.Enabled = False
Timer1.Interval = 1000
End Sub

Private Sub Timer1_Timer()
Label1.Caption = Val(Label1.Caption) - 1
If Label1.Caption = 0 Then
Command2.Enabled = True
Timer1.Enabled = False
End If
End Sub

delphi的代码,其实和vb大同小异

设置timer控件的interval属性为1000
设一个全局变量 timecount 为整型

按钮1点击响应事件:
timecount:=60;
timer.enabled:=true;

在timer1timer函数中写如下代码:
timecount:=timecount-1;
if timecount=0 then
按钮2.enabled:=true;

Dim nIndex As Long

Private Sub Command1_Click()
nIndex = 0
Timer1.Interval = 1000
Timer1.Enabled = True
End Sub

Private Sub Form_