选择目录框的疑惑

[faib920]

一个关于选择目录框的问题
我想在打开此框的时候
可以设置任意一个目录作为默认选择的节点
即它不是选择“我的电脑”而是比如c:\windows\system的一个目录

call fl.ChooseFolder(Me.hwnd, "请选择一个作为数据存放的目录:", fbfDrives, fbcFolders)
'--------------------------------------------------------
Public Enum EnumRootFolder
fbfDeskTop = &H0
fbfPrograms = &H2
fbfControls = &H3
fbfPrinters = &H4
fbfPersonal = &H5
fbfFavorites = &H6
fbfStartup = &H7
fbfRecent = &H8
fbfSendTo = &H9
fbfBitbucket = &HA
fbfStartMenu = &HB
fbfDesktopDirectory = 16
fbfDrives = &H11
fbfNetWork = &H12
fbfNetHood = &H13
fbfFonts = &H14
fbfTemplates = &H15
End Enum

Public Enum EnumChoose
fbcFolders = &H1
fbcComputers = &H1000
fbcPrinters = &H2000
fbcEverything = &H4000
End Enum

Public Function ChooseFolder(hWnd As Long, Message As String, RootFolder As EnumRootFolder, ChooseWho As EnumChoose) As String
'选择目录对话框
On Error GoTo er
Dim Nullpos As Integer
Dim lpIDList As Long
Dim res As Long
Dim sPath As String
Dim Binfo As BrowseInfo
Dim RootID As Long
Binfo.hWndOwner = hWnd
Binfo.lpszTitle = lstrcat(Message, "")
Binfo.ulFlags = ChooseWho
Binfo.pIDLRoot = RootFolder
If RootID <> 0 Then Binfo.pIDLRoot = RootID
lpIDList = SHBrowseForFolder(Binfo)
If lpIDList <> 0 Then
sPath = String(260, Chr(0))
res = SHGetPathFromIDList(lpIDList, sPath)
Nullpos = InStr(sPath, vbNullChar)
If Nullpos <> 0 Then
sPath = Left(sPath, Nullpos - 1)
ChooseFolder = sPath
End If
End If
Exit Function
er:
ChooseFolder = ""
End Function

[lsftest]

Dim Binfo As BrowseInfo
－－－－－－－－－－－－－－－－－－－－－－－
用户类型未定义


为什么不用CommonDialog????两句就可以了。。。。

CommonDialog1.InitDir = "C:\PWIN98\SYSTEM"
CommonDialog1.ShowSave

[faib920]

我的目的是选择一个目录而非文件

[YAOHE]

那就用控件Drive和Dir,一定能达到要求,在工具箱里,最基本的几个控件,为什么不试试!

[faib920]

用以上的API函数不能指定一个目录吗
但我发现有些软件就能达到

[qbilbo]

没看过你的代码。　　：）


将下列代码复制在一个标准模块中，在程序中调用即可。

Option Explicit

Private Const BIF_STATUSTEXT = &H4&
Private Const BIF_RETURNONLYFSDIRS = 1
Private Const BIF_DONTGOBELOWDOMAIN = 2
Private Const MAX_PATH = 260

Private Const WM_USER = &H400
Private Const BFFM_INITIALIZED = 1
Private Const BFFM_SELCHANGED = 2
Private Const BFFM_SETSTATUSTEXT = (WM_USER + 100)
Private Const BFFM_SETSELECTION = (WM_USER + 102)

Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, _
ByVal wParam As Long, ByVal lParam 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 Type BrowseInfo
hWndOwner As Long
pIDLRoot As Long
pszDisplayName As Long
lpszTitle As String
ulFlags As Long
lpfnCallback As Long
lParam As Long
iImage As Long
End Type

Private m_CurrentDirectory As String

'====================== 选择目录的函数 ========================================================================
'Owner ----------- 调用该函数的窗体
'Title ----------- 显示在目录选择对话框上的标题 (可选)
'StarDir --------- 默认打开的目录 (可选)
Public Function BrowseForFolder(Owner As Form, Optional Title As String, Optional StartDir As String) As String

Dim lpIDList As Long
Dim szTitle As String
Dim sBuffer As String
Dim tBrowseInfo As BrowseInfo
m_CurrentDirectory = StartDir & vbNullChar

szTitle = Title
With tBrowseInfo
.hWndOwner = Owner.hWnd
.pIDLRoot = 0
.lpszTitle = IIf(Title <> "", Title, "路径选择：")
.ulFlags = BIF_RETURNONLYFSDIRS + BIF_DONTGOBELOWDOMAIN + BIF_STATUSTEXT
If StartDir <> "" Then
.lpfnCallback = GetAddressofFunction(AddressOf BrowseCallbackProc)
End If
End With

lpIDList = SHBrowseForFolder(tBrowseInfo)
If (lpIDList) Then
sBuffer = Space(MAX_PATH)
SHGetPathFromIDList lpIDList, sBuffer
sBuffer = Left(sBuffer, InStr(sBuffer, vbNullChar) - 1)
BrowseForFolder = sBuffer
Else
BrowseForFolder = ""
End If

End Function

Private Function BrowseCallbackProc(ByVal hWnd As Long, ByVal uMsg As Long, ByVal lp As Long, ByVal pData As Long) As Long

Dim lpIDList As Long
Dim ret As Long
Dim sBuffer As String

On Error Resume Next

Select Case uMsg

Case BFFM_INITIALIZED
Call SendMessage(hWnd, BFFM_SETSELECTION, 1, m_CurrentDirectory)

Case BFFM_SELCHANGED
sBuffer = Space(MAX_PATH)

ret = SHGetPathFromIDList(lp, sBuffer)
If ret = 1 Then
Call SendMessage(hWnd, BFFM_SETSTATUSTEXT, 0, sBuffer)
End If

End Select

BrowseCallbackProc = 0

End Function

Private Function GetAddressofFunction(add As Long) As Long
GetAddressofFunction = add
End Function

[faib920]

没有人帮忙吗