请教各位大侠 如何打开一个空的文件目录啊？
本帖最后由 作者 于 2003-12-3 11:07:17 编辑请问如何打开一个空的文件目录啊？用CommonDialog 的showopen 属性只能带开含有文件的目录啊
另：如何判断一个文件夹是否为空啊？ 这是一个Window中使用的目录浏览器。
Private Type BrowseInfo
hWndOwner As Long
pIDLRoot As Long
pszDisplayName As Long
lpszTitle As Long
ulFlags As Long
lpfnCallback As Long
lParam As Long
iImage As Long
End Type
Const BIF_RETURNONLYFSDIRS = 1
Const MAX_PATH = 260
Private Declare Sub CoTaskMemFree Lib "ole32.dll" (ByVal hMem As Long)
Private Declare Function lstrcat Lib "kernel32" Alias "lstrcatA" (ByVal lpString1 As String, ByVal lpString2 As String) As Long
Private Declare Function SHBrowseForFolder Lib "shell32" (lpbi As BrowseInfo) As Long
Private Declare Function SHGetPathFromIDList Lib "shell32" (ByVal pidList As Long, ByVal lpBuffer As String) As Long
Private Sub Form_Load()
'KPD-Team 1998
'URL: http://www.allapi.net/
'KPDTeam@Allapi.net
Dim iNull As Integer, lpIDList As Long, lResult As Long
Dim sPath As String, udtBI As BrowseInfo
With udtBI
'Set the owner window
.hWndOwner = Me.hWnd
'lstrcat appends the two strings and returns the memory address
.lpszTitle = lstrcat("C:\", "")
'Return only if the user selected a directory
.ulFlags = BIF_RETURNONLYFSDIRS
End With
'Show the 'Browse for folder' dialog
lpIDList = SHBrowseForFolder(udtBI)
If lpIDList Then
sPath = String$(MAX_PATH, 0)
'Get the path from the IDList
SHGetPathFromIDList lpIDList, sPath
'free the block of memory
CoTaskMemFree lpIDList
iNull = InStr(sPath, vbNullChar)
If iNull Then
sPath = Left$(sPath, iNull - 1)
End If
End If
MsgBox sPath
End Sub
关于文件夹和文件的操作，可以在VB或者VBA中引用Microsoft Scripting Runtime类型库，它提供了一些比较简单的方法来操作。
如：
Sub test()
Dim fso As FileSystemObject
Set fso = New FileSystemObject
'判断文件夹是否存在
Debug.Print fso.FolderExists("c:\test")
'判断文件是否存在
Debug.Print fso.FileExists("c:\test")
'判断文件夹中子文件夹的数目
Debug.Print fso.GetFolder("c:\test").SubFolders.Count
'判断文件夹中文件的数目
Debug.Print fso.GetFolder("c:\test").Files.Count
Set fso = Nothing
End Sub
其它的用法可以参考VBA帮助。 感谢，非常！！
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