VB6.0调用SetTimer实现定时器

绝地灬酷狼 2022-07-15 07:13 453阅读 0赞

[VB6.0调用SetTimer实现定时器][VB6.0_SetTimer]

Timer.bas：

![复制代码][copycode.gif]

Option
           
            
           
            Explicit
           
            
           
            Declare
           
            
           
            Function
           
            SetTimer 
           
            Lib
           
            
           
            "
           
            user32
           
            "
           
            (
           
            ByVal
           
            hwnd 
           
            As
           
            
           
            Long
           
            , 
           
            ByVal
           
            nIDEvent 
           
            As
           
            
           
            Long
           
            , 
           
            ByVal
           
            uElapse 
           
            As
           
            
           
            Long
           
            , 
           
            ByVal
           
            lpTimerFunc 
           
            As
           
            
           
            Long
           
            ) 
           
            As
           
            
           
            Long
           
            
           
            Declare
           
            
           
            Function
           
            KillTimer 
           
            Lib
           
            
           
            "
           
            user32
           
            "
           
            (
           
            ByVal
           
            hwnd 
           
            As
           
            
           
            Long
           
            , 
           
            ByVal
           
            nIDEvent 
           
            As
           
            
           
            Long
           
            ) 
           
            As
           
            
           
            Long
           
            
           
            Public
           
            
           
            Sub
           
            TimerProc(
           
            ByVal
           
            hwnd 
           
            As
           
            
           
            Long
           
            , 
           
            ByVal
           
            uMsg 
           
            As
           
            
           
            Long
           
            , 
           
            ByVal
           
            idEvent 
           
            As
           
            
           
            Long
           
            , 
           
            ByVal
           
            dwTime 
           
            As
           
            
           
            Long
           
            ) 
           
            MsgBox
           
            Now() 
           
            End Sub

![复制代码][copycode.gif]

窗体代码：

![复制代码][copycode.gif]

Option
           
            
           
            Explicit
           
            
           
            Dim
           
            lngTimerID 
           
            As
           
            
           
            Long
           
            
           
            Dim
           
            BlnTimer 
           
            As
           
            
           
            Boolean
           
            
           
            Private
           
            
           
            Sub
           
            Form_Load() BlnTimer 
           
            =
           
            
           
            False
           
            Command1.Caption 
           
            =
           
            
           
            "
           
            定时开始
           
            "
           
            
           
            End Sub
           
            
           
            Private
           
            
           
            Sub
           
            Form_Unload(Cancel 
           
            As
           
            
           
            Integer
           
            ) KillTimer 
           
            0
           
            , lngTimerID 
           
            End Sub
           
            
           
            Private
           
            
           
            Sub
           
            Command1_Click() 
           
            If
           
            BlnTimer 
           
            =
           
            
           
            False
           
            
           
            Then
           
            
           
            '
           
            每5秒钟调用一次函数
           
            
           
            lngTimerID 
           
            =
           
            SetTimer(
           
            0
           
            , 
           
            0
           
            , 
           
            5000
           
            , 
           
            AddressOf
           
            TimerProc) BlnTimer 
           
            =
           
            
           
            True
           
            Command1.Caption 
           
            =
           
            
           
            "
           
            定时结束
           
            "
           
            
           
            Else
           
            KillTimer 
           
            0
           
            , lngTimerID BlnTimer 
           
            =
           
            
           
            False
           
            Command1.Caption 
           
            =
           
            
           
            "
           
            定时开始
           
            "
           
            
           
            End
           
            
           
            If
           
            
           
            End Sub

![复制代码][copycode.gif]

说明：  
TimerProc函数定义一定要放在bas模块文件中，否则运行代码"lngTimerID = SetTimer(0, 0, 5000, AddressOf TimerProc)"会报错，

提示：操作符 AddressOf 使用无效。

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posted @ 2011-05-27 19:29 [ MyFavorite][MyFavorite 1] 阅读( 4633) 评论( 1) [ 编辑][Link 4] [ 收藏][Link 5]

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[\#1楼][1]  2593273 2013/1/5 23:41:17 2013-01-05 23:41 | [ 宏 信][Link 6] [  ][Link 7]

講解的很好

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