Option Explicit
'========================================================================================
' User control: modUniBrowseForFolder
' Author: Zhu JinYong
' Original By: DaVBMan (http://vbcity.com/forums/t/67223.aspx)
' Dependencies: -None-
' Compatibility: Unicode Tested on XP/Vista/Win7
' Last revision: 18/5/2011
' About Author: P.R.China,Anhui Province,Anqing City
' Zong Yang County,HuiGong Town,BaMao,Song Ke Village
'----------------------------------------------------------------------------------------
Private Type BrowseInfo
hWndOwner As Long
pIDLRoot As Long
pszDisplayName As Long 'String
lpszTitle As Long 'String
ulFlags As Long
lpfnCallback As Long
lParam As Long
iImage As Long
End Type
Private Const BIF_RETURNONLYFSDIRS = &H1
Private Const BIF_DONTGOBELOWDOMAIN = &H2
Private Const BIF_STATUSTEXT = &H4
Private Const BIF_RETURNFSANCESTORS = &H8
Private Const BIF_EDITBOX = &H10
Private Const BIF_VALIDATE = &H20
Private Const BIF_NEWDIALOGSTYLE = &H40
Private Const BIF_USENEWUI = (BIF_NEWDIALOGSTYLE Or BIF_EDITBOX)
Private Const BIF_BROWSEINCLUDEURLS = &H80
Private Const BIF_UAHINT = &H100
Private Const BIF_NONEWFOLDERBUTTON = &H200
Private Const BIF_NOTRANSLATETARGETS = &H400
Private Const BIF_BROWSEFORCOMPUTER = &H1000
Private Const BIF_BROWSEFORPRINTER = &H2000
Private Const BIF_BROWSEINCLUDEFILES = &H4000
Private Const BIF_SHAREABLE = &H8000
Private Const MAX_PATH = 260
Private Const WM_USER = &H400
Private Const BFFM_INITIALIZED = 1
Private Const BFFM_SELCHANGED = 2
Private Const BFFM_VALIDATEFAILEDA = 3 '// lParam:szPath ret:1(cont),0(EndDialog)
Private Const BFFM_VALIDATEFAILEDW = 4 '// lParam:wzPath ret:1(cont),0(EndDialog)
Private Const BFFM_IUNKNOWN = 5 '// provides IUnknown to client. lParam: IUnknown*
'// messages to browser
Private Const BFFM_SETSTATUSTEXT = (WM_USER + 100)
Private Const BFFM_SETSTATUSTEXTW = WM_USER + 104
Private Const BFFM_SETSELECTION = (WM_USER + 102)
Private Const BFFM_SETSELECTIONW = (WM_USER + 103)
Private Const BFFM_ENABLEOK = WM_USER + 101
'Private Declare Function SHGetPathFromIDListA Lib "shell32.dll" (ByVal pidl As Long, ByVal pszPath As String) As Long
Private Declare Function SHGetPathFromIDListW Lib "shell32" (ByVal pidList As Long, ByVal lpBuffer As Long) As Long
'Private Declare Function SHBrowseForFolderA Lib "shell32.dll" (lpBrowseInfo As BrowseInfo) As Long
Private Declare Function SHBrowseForFolderW Lib "shell32" (lpbi As BrowseInfo) As Long
Private Declare Sub CoTaskMemFree Lib "ole32.dll" (ByVal pv As Long)
'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 SendMessageW Lib "user32" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
'Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (lpvDest As Any, lpvSource As Any, ByVal cbCopy As Long)
Public Function BrowseForFolderW(ByVal hWndModal As Long, Optional Title As String = "Please select a folder:", Optional StartFolder As String = "", _
Optional IncludeFiles As Boolean = False, Optional IncludeNewFolderButton As Boolean = False) As String
Dim bInf As BrowseInfo
Dim RetVal As Long
Dim PathID As Long
Dim RetPath As String
Dim Offset As Integer
Dim szTitleInfo() As Byte
Dim strSTARTFOLDER As String
'Set the properties of the folder dialog
With bInf
.hWndOwner = hWndModal
.pIDLRoot = 0
szTitleInfo = Title & vbNullChar
.lpszTitle = VarPtr(szTitleInfo(0))
.ulFlags = IIf(IncludeFiles, BIF_BROWSEINCLUDEFILES, BIF_RETURNONLYFSDIRS) + BIF_DONTGOBELOWDOMAIN + BIF_USENEWUI + _
IIf(IncludeNewFolderButton, 0&, BIF_NONEWFOLDERBUTTON)
If IncludeFiles Then .ulFlags = .ulFlags Or BIF_BROWSEINCLUDEFILES
If IncludeNewFolderButton Then .ulFlags = .ulFlags Or BIF_NEWDIALOGSTYLE
If StartFolder <> "" Then
strSTARTFOLDER = StartFolder & vbNullChar
.lpfnCallback = GetAddressofFunction(AddressOf BrowseCallbackProc) 'get address of function.
.lParam = StrPtr(strSTARTFOLDER)
End If
End With
'Show the Browse For Folder dialog
PathID = SHBrowseForFolderW(bInf)
If PathID = 0 Then Exit Function
RetPath = Space$(MAX_PATH)
RetVal = SHGetPathFromIDListW(PathID, StrPtr(RetPath))
If RetVal Then
'Trim off the null chars ending the path
'and display the returned folder
Offset = InStr(RetPath, Chr$(0))
BrowseForFolderW = Left$(RetPath, Offset - 1)
'Free memory allocated for PIDL
CoTaskMemFree PathID
Else
BrowseForFolderW = ""
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 SendMessageW(hwnd, BFFM_SETSELECTIONW, 1&, pData) 'StrPtr(mstrSTARTFOLDER)) 'Private mstrSTARTFOLDER As String
Case BFFM_SELCHANGED
sBuffer = Space(MAX_PATH)
ret = SHGetPathFromIDListW(lp, StrPtr(sBuffer))
If ret = 1 Then
Call SendMessageW(hwnd, BFFM_SETSTATUSTEXTW, 0, StrPtr(sBuffer))
End If
End Select
BrowseCallbackProc = 0
End Function
Private Function GetAddressofFunction(add As Long) As Long
GetAddressofFunction = add
End Function
