Api, carpetas y archivos.

HAce ya un tiempo atras cree varias clases una de ellas para tratar la busqueda de archivos:

cls_files.cls

Código

'
'   /////////////////////////////////////////////////////////////
'   // Autor:   BlackZeroX ( Ortega Avila Miguel Angel )       //
'   //                                                         //
'   // Web:     http://InfrAngeluX.Sytes.Net/                  //
'   //                                                         //
'   //    |-> Pueden Distribuir Este codigo siempre y cuando   //
'   // no se eliminen los creditos originales de este codigo   //
'   // No importando que sea modificado/editado o engrandecido //
'   // o achicado, si es en base a este codigo                 //
'   /////////////////////////////////////////////////////////////
 
Option Explicit
 
Private Declare Function lstrcmp Lib "kernel32" Alias "lstrcmpA" (ByVal lpString1 As String, ByVal lpString2 As String) As Long
Private Declare Function FindFirstFile& Lib "kernel32" Alias "FindFirstFileA" (ByVal lpFileName$, lpFindFileData As WIN32_FIND_DATA)
Private Declare Function FindNextFile& Lib "kernel32" Alias "FindNextFileA" (ByVal hFindFile&, lpFindFileData As WIN32_FIND_DATA)
Private Declare Function GetFileAttributes Lib "kernel32" Alias "GetFileAttributesA" (ByVal lpFileName As String) As Long
Private Declare Function FindClose& Lib "kernel32" (ByVal hFindFile&)
 
Const MAX_PATH                              As Integer = 260
Const MAXDWORD                              As Long = &HFFFF
Const INVALID_HANDLE_VALUE                  As Long = -1
 
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
 
Event Folder(ByRef PathFolder As String, ByVal Atrributes As VbFileAttribute)
Event File(ByRef NameFile As String, ByRef TypeOfFile As Long, ByVal Atrributes As VbFileAttribute)
Event Begin()
Event Finish()
 
Private Priv_StrDir$, Priv_StrCri$(), Priv_IncFolder As Boolean, Priv_Cancel As Boolean
Private Priv_CriFindInDir As VbFileAttribute, Priv_CriFindInFile  As VbFileAttribute
Private Hwnd_SearchF&(), LS_Index&(0 To 1), BytesNow_#
Private Bool_Run As Byte
 
Public AllowEvents                          As Boolean
 
Private Sub Class_Initialize()
    Priv_IncFolder = True
    AllowEvents = True
    Priv_CriFindInDir = vbDirectory
    Priv_CriFindInFile = vbArchive
End Sub
 
Public Property Get BytesNow#()
    BytesNow# = BytesNow_#
End Property
 
Public Property Get FindInPath() As String
    FindInPath = Priv_StrDir$
End Property
 
Public Property Let FindInPath(ByVal vData$)
    Call Stop_
    Call NormalizePath&(vData$)
    Priv_StrDir$ = vData$
End Property
 
 
 
Public Property Get CriterionFindDir() As VbFileAttribute
    CriterionFindDir = Priv_CriFindInDir
End Property
Public Property Let CriterionFindDir(ByVal vData As VbFileAttribute)
    Call Stop_
    Priv_CriFindInDir = vData Or vbDirectory
End Property
 
Public Property Get CriterionFindFile() As VbFileAttribute
    CriterionFindFile = Priv_CriFindInFile
End Property
Public Property Let CriterionFindFile(ByVal vData As VbFileAttribute)
    Call Stop_
    Priv_CriFindInFile = vData Or vbArchive
End Property
 
 
 
Public Property Get CriterionToFind() As Variant
    CriterionToFind = Priv_StrCri$
End Property
 
Public Property Let CriterionToFind(ByRef vData As Variant)
On Error GoTo Err_
Dim L_Index                             As Long
    Call Stop_
    Erase Priv_StrCri$
    LS_Index&(0) = INVALID_HANDLE_VALUE
    LS_Index&(1) = INVALID_HANDLE_VALUE
    If IsArray(vData) Then
        LS_Index&(0) = LBound(vData)
        LS_Index&(1) = UBound(vData)
        ReDim Priv_StrCri$(LS_Index&(0) To LS_Index&(1))
        For L_Index = LS_Index&(0) To LS_Index&(1)
            Priv_StrCri$(L_Index) = CStr(vData(L_Index))
        Next L_Index
    Else
        LS_Index&(0) = 0
        LS_Index&(0) = 0
        ReDim Priv_StrCri$(0)
        Priv_StrCri$(0) = vData
    End If
Exit Property
Err_:
    Err.Clear
End Property
 
Public Property Get IncludeSubFolders() As Boolean: IncludeSubFolders = Priv_IncFolder: End Property
Public Property Let IncludeSubFolders(ByVal vData As Boolean): Priv_IncFolder = vData: End Property
 
Public Property Get ItsRun() As Boolean:    ItsRun = Bool_Run = 1:      End Property
 
Public Sub Stop_():    Bool_Run = 0: Priv_Cancel = True: End Sub
 
Public Function Start_(Optional StrFindInPath As Variant = "", Optional StrCriterionToFind As Variant = Nothing) As Double
 
    Call Stop_
    BytesNow_# = 0
    If Not StrFindInPath = "" Then FindInPath = StrFindInPath
    If Not IsObject(StrCriterionToFind) Then CriterionToFind = StrCriterionToFind
    If Not (LS_Index&(0) = INVALID_HANDLE_VALUE And LS_Index&(0) = INVALID_HANDLE_VALUE) And Priv_StrDir$ <> "" And CStr(Dir(Priv_StrDir$, vbDirectory)) <> "" Then
        RaiseEvent Begin
        Bool_Run = 1
        Priv_Cancel = False
        Call FindFilesAPI#(Priv_StrDir$, Priv_StrCri$())
        Start_# = BytesNow_#
        Bool_Run = 0
        RaiseEvent Finish
    End If
 
End Function
 
Private Sub FindFilesAPI(ByVal StrPath$, ByRef StrSearch$())
Dim str_NameNow$
Dim Str_NameDir$()
Dim Lng_DirCant&
Dim Lng_DirCount&
Dim LF_Index&
'Dim Lng_Res&
Dim Hwnd_Search&
Dim WFD                                 As WIN32_FIND_DATA
 
    Lng_DirCount& = 0
    Hwnd_Search& = FindFirstFile&(StrPath$ & "*", WFD)
 
    If Hwnd_Search& <> INVALID_HANDLE_VALUE Then
        RaiseEvent Folder(StrPath$, WFD.dwFileAttributes)
        Do
            If AllowEvents Then DoEvents
            If Priv_Cancel Then Exit Sub
            With WFD
                str_NameNow$ = Left$(.cFileName, InStr(.cFileName, Chr(0)) - 1)
                If (((.dwFileAttributes Or Priv_CriFindInDir) = .dwFileAttributes) And ((.dwFileAttributes And vbDirectory) = vbDirectory)) Then
                    If (str_NameNow$ <> ".") And (str_NameNow$ <> "..") Then
                        ReDim Preserve Str_NameDir$(Lng_DirCount&)
                        Str_NameDir$(Lng_DirCount&) = str_NameNow$
                        Lng_DirCount& = Lng_DirCount& + 1
                    End If
                End If
            End With
        Loop While FindNextFile&(Hwnd_Search&, WFD)
 
        Call FindClose(Hwnd_Search&)
 
        For LF_Index& = LS_Index&(0) To LS_Index&(1)
            Hwnd_Search& = FindFirstFile&(StrPath$ & StrSearch$(LF_Index&), WFD)
            If Hwnd_Search& <> INVALID_HANDLE_VALUE Then
                Do
                    If AllowEvents Then DoEvents
                    If Priv_Cancel Then Exit Sub
                    With WFD
                        str_NameNow$ = Left$(.cFileName, InStr(.cFileName, Chr(0)) - 1)
                        If (((.dwFileAttributes Or Priv_CriFindInFile) = .dwFileAttributes) And ((.dwFileAttributes And vbArchive) = vbArchive)) Then
 
                            If (str_NameNow$ <> ".") And (str_NameNow$ <> "..") Then
                                BytesNow_# = BytesNow_# + ((.nFileSizeHigh& * MAXDWORD&) + .nFileSizeLow&) + 0
                                RaiseEvent File(str_NameNow$, LF_Index&, .dwFileAttributes)
                            End If
                        End If
                    End With
                Loop While FindNextFile&(Hwnd_Search&, WFD)
                Call FindClose(Hwnd_Search&)
            End If
        Next LF_Index
 
        If Lng_DirCount& > 0 And Priv_IncFolder Then
            For Lng_DirCant& = 0 To Lng_DirCount& - 1
                Call FindFilesAPI#(StrPath$ & Str_NameDir$(Lng_DirCant&) & "\", StrSearch$)
            Next
        End If
 
    End If
 
End Sub
 
'   Returns
'   //  0   =   NoPathValid
'   //  1   =   Ok
'   //  2   =   Fixed/Ok
Public Function NormalizePath&(ByRef sData$)
 
    If Strings.Len(sData$) > 1 Then
        sData$ = Strings.Replace(sData$, "/", "\")
        If Not Strings.Right$(sData$, 1) = "\" Then
            sData$ = sData$ & "\"
            NormalizePath& = 2
        Else
            NormalizePath& = 1
        End If
    Else
        NormalizePath& = 0
    End If
 
End Function

Ejemplo:

Código

Option Explicit
 
Private WithEvents ClsScanDisk          As cls_files
Private ThisPath$
Private CountFiles&
 
Private Sub ClsScanDisk_Begin()
    ThisPath$ = ClsScanDisk.FindInPath
    CountFiles& = 0
    Caption = "ScanDisk ha Encontrado: "
End Sub
 
Private Sub ClsScanDisk_File(NameFile As String, TypeOfFile As Long, ByVal Atrributes As Long)
    CountFiles& = CountFiles& + 1
    Caption = "ScanDisk ha Encontrado: " & CountFiles&
    Debug.Print ThisPath$ & NameFile
    Debug.Print vbTab & "Criterio:"; ClsScanDisk.CriterionToFind(TypeOfFile),
    Debug.Print "Atributos:"; Atrributes
End Sub
 
Private Sub ClsScanDisk_Finish()
    Caption = "ScanDisk ha Encontrado: " & CountFiles& & " -> Finalizado."
End Sub
 
Private Sub ClsScanDisk_Folder(PathFolder As String, ByVal Atrributes As Long)
    ThisPath$ = PathFolder
End Sub
 
 
Private Sub Form_Load()
    If ClsScanDisk Is Nothing Then Set ClsScanDisk = New cls_files
    With ClsScanDisk
        If .ItsRun Then .Stop_
        .CriterionToFind = Split("*.mp3,*.wma,*.avi,*.mid,*.mid", ",")
        '.CriterionFindDir = vbReadOnly                  '   //  Solo directorios de Solo lectura.
        '.CriterionFindFile = vbHidden Or vbReadOnly     '  //  Solo archivos ocultos.
        .FindInPath = "c:\"
        .AllowEvents = True
        Call .Start_
    End With
End Sub

Dulces Lunas!¡.