The information in this article applies to:
- Microsoft Visual Basic Learning, Professional, and Enterprise Editions
for Windows, version 5.0
SUMMARY
This article demonstrates how to display the directory structure of a
computer and allow a user to select a directory without using the Common
Dialog control.
MORE INFORMATION
The sample project uses the following API functions to display the
directory structure of a computer:
- SHBrowseForFolder - displays a dialog box that enables the user to
select a shell folder.
- SHGetPathFromIDList - converts an item identifier list to a file system
path.
Create the Sample Project
- Start a new Standard EXE project in Visual Basic. Form1 is created by
default.
- Add a CommandButton to Form1.
- Copy the following code to the Code window of Form1:
Option Explicit
Private Const BIF_RETURNONLYFSDIRS = 1
Private Const BIF_DONTGOBELOWDOMAIN = 2
Private Const MAX_PATH = 260
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 Declare Function lstrcat Lib "kernel32" Alias "lstrcatA" _
(ByVal lpString1 As String, ByVal _
lpString2 As String) As Long
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
Private Sub Command1_Click()
'Opens a Treeview control that displays the directories in a computer
Dim lpIDList As Long
Dim sBuffer As String
Dim szTitle As String
Dim tBrowseInfo As BrowseInfo
szTitle = "This is the title"
With tBrowseInfo
.hWndOwner = Me.hWnd
.lpszTitle = lstrcat(szTitle, "")
.ulFlags = BIF_RETURNONLYFSDIRS + BIF_DONTGOBELOWDOMAIN
End With
lpIDList = SHBrowseForFolder(tBrowseInfo)
If (lpIDList) Then
sBuffer = Space(MAX_PATH)
SHGetPathFromIDList lpIDList, sBuffer
sBuffer = Left(sBuffer, InStr(sBuffer, vbNullChar) - 1)
MsgBox sBuffer
End If
End Sub
- On the Run menu, click Start or press the F5 key to start the program.
Click the CommandButton to display the directory structure of the
computer. Select a directory and click the OK button to display the
directory you selected in a message box.
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