form1.frm

一个小小的延时程序VB,如果你想学的话,就下下来看看吧,有一定的收获哦.

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3090
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3090
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command2 
      Caption         =   "Command2"
      Height          =   675
      Left            =   2220
      TabIndex        =   1
      Top             =   1020
      Width           =   1605
   End
   Begin VB.CommandButton Command1 
      Caption         =   "Command1"
      Height          =   675
      Left            =   420
      TabIndex        =   0
      Top             =   1020
      Width           =   1545
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False



Dim StopTheTimer As Boolean

Private Sub Command1_Click() '开始延时
Dim lRetval&
lRetval = Delay(1, 5, StopTheTimer)
If lRetval = 0 Then
MsgBox "时间到!"
Else
MsgBox "取消延时!"
End If
End Sub
Private Sub Command2_Click() '取消延时
StopTheTimer = True
End Sub
Public Function Delay(Mins%, Secs%, Optional ByRef StopFlag) As Long
Dim EndOfDelay
EndOfDelay = DateAdd("n", Mins, Now)
EndOfDelay = DateAdd("s", Secs, EndOfDelay)
Delay = 0
Do While (Now < EndOfDelay)
DoEvents
If Not IsMissing(StopFlag) Then
If StopFlag Then
Delay = 1
StopFlag = False
Exit Do
End If
End If
Loop
End Function