VB6 Code listing directorys

Dell / OPTIPLEX 755
July 29, 2009 at 05:18:08
Specs: Microsoft Windows XP Professional, 2.327 GHz / 2013 MB
Hello, I have a vb program that lists only msi files in a directory, I want it to list msi files in sub directorys of this directory, can anyone help me out with this?

here is my existing code.

Private Sub ListFiles(strPath As String, Optional Extention As String)
    'Leave Extention blank for all files
    Dim File As String
    If Right$(strPath, 1) <> "\" Then strPath = strPath & "\"
        If Trim$(Extention) = "" Then
            Extention = "*.*"
        ElseIf Left$(Extention, 2) <> "*." Then
        Extention = "*." & Extention
    End If
        File = Dir$(strPath & Extention)
        Do While Len(File)
            List1.AddItem File
            File = Dir$
End Sub

I took this code off the web an adjusted it slightly to fit my needs, probably not the best since now I am struggling to figure out exactly how to get it to list the files from sub directories.

Any help much appreciated.


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July 29, 2009 at 05:56:57
To do what you want you need to have a recursive funcion. A recursive function is a function that calls itself. Like this:

Sub getSubDirectories(FilePath As String)

Dim a As Integer
Dim d As Integer

File1.Path = FilePath
If File1.ListCount > 0 Then
For a = 0 To File1.ListCount - 1
If Len(Dir1.Path) = 3 Then
List1.AddItem File1.Path & File1.List(a)
List1.AddItem File1.Path & "\" & File1.List(a)
End If
End If
Dir1.Path = FilePath
If Dir1.ListCount > 0 Then
For d = 0 To Dir1.ListCount - 1
Dir1.Path = Dir1.List(d)
getSubDirectories Dir1.Path
Dir1.Path = ".."
End If

End Sub

It uses the FileList and DireList controls tolist the files and directories being searched.

It keeps calling itself until Dir1.list count = 0


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July 29, 2009 at 06:09:03
Thanks for the reply, Im not sure how I can integrate this with my existing code, for example I call the ListFiles function I have above in the Form Load section like this.

ListFiles "C:\temp\", "msi"

Would i simply need to call the getSubDirectories in the same way alongside ListFiles? e.g.

ListFiles "C:\temp\", "msi"
getSubDirectories "C:\temp\"


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July 29, 2009 at 10:33:03
You could try using the winapi; here's a recursive function found the VB apiguide, which works great.

'Create a form with a command button (command1), a list box (list1)
'and four text boxes (text1, text2, text3 and text4).
'Type in the first textbox a startingpath like c:\
'and in the second textbox you put a pattern like *.* or *.txt

Private Declare Function FindFirstFile Lib "kernel32" Alias "FindFirstFileA" (ByVal lpFileName As String, lpFindFileData As WIN32_FIND_DATA) As Long
Private Declare Function FindNextFile Lib "kernel32" Alias "FindNextFileA" (ByVal hFindFile As Long, lpFindFileData As WIN32_FIND_DATA) As Long
Private Declare Function GetFileAttributes Lib "kernel32" Alias "GetFileAttributesA" (ByVal lpFileName As String) As Long
Private Declare Function FindClose Lib "kernel32" (ByVal hFindFile As Long) As Long

Const MAX_PATH = 260

Private Type FILETIME
    dwLowDateTime As Long
    dwHighDateTime As Long
End Type

Private Type WIN32_FIND_DATA
    dwFileAttributes As Long
    ftCreationTime As FILETIME
    ftLastAccessTime As FILETIME
    ftLastWriteTime As FILETIME
    nFileSizeHigh As Long
    nFileSizeLow As Long
    dwReserved0 As Long
    dwReserved1 As Long
    cFileName As String * MAX_PATH
    cAlternate As String * 14
End Type
Function StripNulls(OriginalStr As String) As String
    If (InStr(OriginalStr, Chr(0)) > 0) Then
        OriginalStr = Left(OriginalStr, InStr(OriginalStr, Chr(0)) - 1)
    End If
    StripNulls = OriginalStr
End Function

Function FindFilesAPI(path As String, SearchStr As String, FileCount As Integer, DirCount As Integer)
    'KPD-Team 1999
    'E-Mail: KPDTeam@Allapi.net
    'URL: <a href="http://www.allapi.net/" target="_blank">http://www.allapi.net/</a>

    Dim FileName As String ' Walking filename variable...
    Dim DirName As String ' SubDirectory Name
    Dim dirNames() As String ' Buffer for directory name entries
    Dim nDir As Integer ' Number of directories in this path
    Dim i As Integer ' For-loop counter...
    Dim hSearch As Long ' Search Handle
    Dim Cont As Integer
    If Right(path, 1) <> "\" Then path = path & "\"
    ' Search for subdirectories.
    nDir = 0
    ReDim dirNames(nDir)
    Cont = True
    hSearch = FindFirstFile(path & "*", WFD)
    If hSearch <> INVALID_HANDLE_VALUE Then
        Do While Cont
        DirName = StripNulls(WFD.cFileName)
        ' Ignore the current and encompassing directories.
        If (DirName <> ".") And (DirName <> "..") Then
            ' Check for directory with bitwise comparison.
            If GetFileAttributes(path & DirName) And FILE_ATTRIBUTE_DIRECTORY Then
                dirNames(nDir) = DirName
                DirCount = DirCount + 1
                nDir = nDir + 1
                ReDim Preserve dirNames(nDir)
            End If
        End If
        Cont = FindNextFile(hSearch, WFD) 'Get next subdirectory.
        Cont = FindClose(hSearch)
    End If
    ' Walk through this directory and sum file sizes.
    hSearch = FindFirstFile(path & SearchStr, WFD)
    Cont = True
    If hSearch <> INVALID_HANDLE_VALUE Then
        While Cont
            FileName = StripNulls(WFD.cFileName)
            If (FileName <> ".") And (FileName <> "..") Then
                FindFilesAPI = FindFilesAPI + (WFD.nFileSizeHigh * MAXDWORD) + WFD.nFileSizeLow
                FileCount = FileCount + 1
                List1.AddItem path & FileName
            End If
            Cont = FindNextFile(hSearch, WFD) ' Get next file
        Cont = FindClose(hSearch)
    End If
    ' If there are sub-directories...
    If nDir > 0 Then
        ' Recursively walk into them...
        For i = 0 To nDir - 1
            FindFilesAPI = FindFilesAPI + FindFilesAPI(path & dirNames(i) & "\", SearchStr, FileCount, DirCount)
        Next i
    End If
End Function
Sub Command1_Click()
    Dim SearchPath As String, FindStr As String
    Dim FileSize As Long
    Dim NumFiles As Integer, NumDirs As Integer
    Screen.MousePointer = vbHourglass
    SearchPath = Text1.Text
    FindStr = Text2.Text
    FileSize = FindFilesAPI(SearchPath, FindStr, NumFiles, NumDirs)
    Text3.Text = NumFiles & " Files found in " & NumDirs + 1 & " Directories"
    Text4.Text = "Size of files found under " & SearchPath & " = " & Format(FileSize, "#,###,###,##0") & " Bytes"
    Screen.MousePointer = vbDefault
End Sub

You wouldn't need some of the sample program. The listbox would show any files found, which you could use, but the first text box is for the start path and the second text box is for the the file pattern... you wouldn't need them.

Mill over the command1_click function in the sample to see what you'd actually need to replace.

Hope that helps

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August 3, 2009 at 01:10:01
shutat your example is working great, i have changed it slightly so it doesn't involve as many text boxes but brilliant.

Thanks for your help it is much appreciated!

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