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Private Sub Form_load()
'ÅжϳÌÐòÊÇ·ñÒѾÔËÐÐ
If App.PrevInstance
Then
MsgBox "±¾³ÌÐòÒѾÔËÐУ¡", vbInformation Or vbOKOnly, "ÌáʾÐÅÏ¢"
Unload
Me
Exit Sub
End If
'ÒÔÏÂÊÇÖ÷Òª³ÌÐò
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End
Sub
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Option Explicit
Public Sub CheckExist(fm
As Form) '·ÀÖ¹³ÌÐòÖØ¸´Ö´ÐÐ
Dim title As String
If App.PrevInstance
Then
title = App.title
Call MsgBox("Õâ³ÌÐòÒÑÖ´ÐÐ",
vbCritical)
App.title = "" 'Èç´Ë²Å²»»á Avtivate µ½×Ô¼º
fm.Caption =
""
AppActivate title 'activate ÏÈǰ¾ÍÒÑÔËÐеijÌÐò
End ' ½áÊø
End
If
End Sub
Private Sub Form_Load()
Call
CheckExist(Me)
End Sub
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Private Declare Function URLDownloadToFile Lib "urlmon" Alias "URLDownloadToFileA" (ByVal pCaller As Long, ByVal szURL As String, ByVal szFileName As String, ByVal dwReserved As Long, ByVal lpfnCB As Long) As Long
Private Sub Command1_Click()
Dim Url As String, Filepath As String
Url = "h ......
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http://www.mndsoft.com/blog/article.asp?id=903
http://topic.csdn.net/t/20051015/14/4328396.html
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Dim ControlKey As Boolean
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Public Declare Function GetOpenFileName Lib "comdlg32.dll" Alias "GetOpenFileNameA" (pOpenfilename As OPENFILENAME) As Long
Public Type OPENFILENAME
lStructSize As Long
hwndOwner As Long
hInstance As Long
lpstrFilter As String
lpstrCustomFilt ......