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做成一个时间限制的测试版 -VB资料

发布者:vbfans
发布日期:2011/4/10 15:00:46   更新日期:2011/4/10 15:00:46
阅读次数:2448
评分:4.80
介绍:做成一个时间限制的测试版 -VB资料
正文:

可用注册表简单地保存已用的天数或次数

'次数限制(如30次)如下:
Private Sub Form_Load()
Dim RemainDay As Long
RemainDay = GetSetting("MyApp", "set", "times", 0)
If RemainDay = 30 Then
MsgBox "试用次数已满,请……"
Unload Me
End If
MsgBox "现在剩下:" & 30 - RemainDay & "试用次数,好好珍惜!"
RemainDay = RemainDay + 1
SaveSetting "MyApp", "set", "times", RemainDay
End Sub

'时间限制的(如30天)
Private Sub Form_Load()
Dim RemainDay As Long
RemainDay = GetSetting("MyApp", "set", "day", 0)
If RemainDay = 30 Then
MsgBox "试用期已过,请……"
Unload Me
End If
MsgBox "现在剩下:" & 30 - RemainDay & "试用天数,好好珍惜!"
if day(now)-remainday>0 then RemainDay = RemainDay + 1
SaveSetting "MyApp", "set", "times", RemainDay
End Sub

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