VBGood网站全文搜索 Google

搜索VBGood全站网页(全文搜索)
首页 - 经验之谈 - 用VB实现目录选择+浏览
发表评论(0)作者:不详, 平台:VB6.0+Win98, 阅读:13708, 日期:2001-07-11
注释: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!

注释: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
     
    注释:定义变量
     Dim iNull As Integer
     Dim lpIDList As Long
     Dim lResult As Long
     Dim sPath As String
     Dim udtBI As BrowseInfo

    注释:初始化.....
     With udtBI
        .hwndOwner = hwndOwner
        .lpszTitle = lstrcat(sPrompt, "")
        .ulFlags = BIF_RETURNONLYFSDIRS
     End With

    注释:调用API
     lpIDList = SHBrowseForFolder(udtBI)
    注释: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

注释:**************************************************************************

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