用VB实现目录选择+浏览

王朝vb·作者佚名  2006-01-08
窄屏简体版  字體: |||超大  

'下面用API实现目录浏览,选择目录,如果有高手能够在选择目录时新建一个,请续,谢谢!

'Common.bas*************************************************************

Option Explicit

Public 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

Public Const BIF_RETURNONLYFSDIRS = 1

Public Const MAX_PATH = 260

Public Declare Sub CoTaskMemFree Lib "ole32.dll" (ByVal hMem As Long)

Public Declare Function lstrcat Lib "kernel32" Alias "lstrcatA" (ByVal lpString1 As String, ByVal lpString2 As String) As Long

Public Declare Function SHBrowseForFolder Lib "shell32" (lpbi As BrowseInfo) As Long

Public Declare Function SHGetPathFromIDList Lib "shell32" (ByVal pidList As Long, ByVal lpBuffer As String) As Long

Public Function BrowseForFolder(hwndOwner As Long, sPrompt As String) As String

'定义变量

Dim iNull As Integer

Dim lpIDList As Long

Dim lResult As Long

Dim sPath As String

Dim udtBI As BrowseInfo

'初始化.....

With udtBI

.hwndOwner = hwndOwner

.lpszTitle = lstrcat(sPrompt, "")

.ulFlags = BIF_RETURNONLYFSDIRS

End With

'调用API

lpIDList = SHBrowseForFolder(udtBI)

'得到返回结果

If lpIDList Then

sPath = String$(MAX_PATH, 0)

lResult = SHGetPathFromIDList(lpIDList, sPath)

Call CoTaskMemFree(lpIDList)

iNull = InStr(sPath, vbNullChar)

If iNull Then sPath = Left$(sPath, iNull - 1)

End If

BrowseForFolder = sPath

End Function

'**************************************************************************

下面在窗体中的按钮中调用

Private Sub cmdBrowse_Click()

Dim strResFolder As String

strResFolder = BrowseForFolder(hWnd, "请选择一个目录.")

If strResFolder = "" Then

Call MsgBox("你取消了选择目录..", vbExclamation)

Else

Call MsgBox("目录" & strResFolder & "被选择!", vbExclamation)

End If

End Sub

 
 
 
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