[资料整理]调出目录选择对话框

作者在 2007-04-23 00:50:00 发布以下内容

下面为“调出目录选择对话框”的模块

 

'调出目录选择对话框
'轻风工作室整理

'**********************************************************API函数声明**********************************************
Private Declare Sub CoTaskMemFree Lib "ole32.dll" (ByVal hMem As Long)
Private Declare lstrcat Lib "kernel32" Alias "lstrcatA" (ByVal lpString1 As String, ByVal lpString2 As String) As Long
Private Declare SHBrowseForFolder Lib "shell32" (lpbi As BrowseInfo) As Long
Private Declare SHGetPathFromIDList Lib "shell32" (ByVal pidList As Long, ByVal lpBuffer As String) As Long
'********************************************************************************************************************
'**********************************************************常量声明**********************************************

Private Const BIF_RETURNONLYFSDIRS = 1
Private Const MAX_PATH = 260
'********************************************************************************************************************
'**********************************************************自定义类型**********************************************
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
'********************************************************************************************************************
'**********************************************************自定义函数*********************************************

Public SelectDirectory(thehwnd As Long) As String
    Dim iNull As Integer, lpIDList As Long, lResult As Long
    Dim sPath As String, udtBI As BrowseInfo

    With udtBI
        .hWndOwner = thehwnd
        .lpszTitle = lstrcat("请选择文件夹", "") '标题
        .ulFlags = BIF_RETURNONLYFSDIRS
    End With
   
    lpIDList = SHBrowseForFolder(udtBI)
   
    If lpIDList Then
        sPath = String$(MAX_PATH, 0)
        SHGetPathFromIDList lpIDList, sPath
        CoTaskMemFree lpIDList
        iNull = InStr(sPath, vbNullChar)
        If iNull Then
            sPath = Left$(sPath, iNull - 1)
        End If
    End If
    SelectDirectory = sPath
End
'******************************************************************************************************************

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