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  Visual Basic    (ActiveX/Controles/DLL)

Título da Dica:  Mostrar Caixa de Tranferencia ao Copiar Pasta
Postada em 16/2/2004 por Brexuega            
Crie um projevto novo, e adicione nele um Botão e duas CheckBoxes
copie este codigo para o form
Option Explicit

         Private Const FO_COPY = &H2&   'Copies the files specified
                                        'in the pFrom member to the
                                        'location specified in the
                                        'pTo member.

         Private Const FO_DELETE = &H3& 'Deletes the files specified
                                        'in pFrom (pTo is ignored.)

         Private Const FO_MOVE = &H1&   'Moves the files specified
                                        'in pFrom to the location
                                        'specified in pTo.

         Private Const FO_RENAME = &H4& 'Renames the files
                                        'specified in pFrom.

         Private Const FOF_ALLOWUNDO = &H40&   'Preserve Undo information.

         Private Const FOF_CONFIRMMOUSE = &H2& 'Not currently implemented.

         Private Const FOF_CREATEPROGRESSDLG = &H0& 'handle to the parent
                                                    'window for the
                                                    'progress dialog box.

         Private Const FOF_FILESONLY = &H80&        'Perform the operation
                                                    'on files only if a
                                                    'wildcard file name
                                                    '(*.*) is specified.

         Private Const FOF_MULTIDESTFILES = &H1&    'The pTo member
                                                    'specifies multiple
                                                    'destination files (one
                                                    'for each source file)
                                                    'rather than one
                                                    'directory where all
                                                    'source files are
                                                    'to be deposited.

         Private Const FOF_NOCONFIRMATION = &H10&   'Respond with Yes to
                                                    'All for any dialog box
                                                    'that is displayed.

         Private Const FOF_NOCONFIRMMKDIR = &H200&  'Does not confirm the
                                                    'creation of a new
                                                    'directory if the
                                                    'operation requires one
                                                    'to be created.

         Private Const FOF_RENAMEONCOLLISION = &H8& 'Give the file being
                                                    'operated on a new name
                                                    'in a move, copy, or
                                                    'rename operation if a
                                                    'file with the target
                                                    'name already exists.

         Private Const FOF_SILENT = &H4&            'Does not display a
                                                    'progress dialog box.

         Private Const FOF_SIMPLEPROGRESS = &H100&  'Displays a progress
                                                    'dialog box but does
                                                    'not show the
                                                    'file names.

         Private Const FOF_WANTMAPPINGHANDLE = &H20&
                                   'If FOF_RENAMEONCOLLISION is specified,
                                   'the hNameMappings member will be filled
                                   'in if any files were renamed.

         ' The SHFILOPSTRUCT is not double-word aligned. If no steps are
         ' taken, the last 3 variables will not be passed correctly. This
         ' has no impact unless the progress title needs to be changed.

         Private Type SHFILEOPSTRUCT
            hwnd As Long
            wFunc As Long
            pFrom As String
            pTo As String
            fFlags As Integer
            fAnyOperationsAborted As Long
            hNameMappings As Long
            lpszProgressTitle As String
         End Type

         Private Declare Sub CopyMemory Lib "KERNEL32" _
               Alias "RtlMoveMemory" _
               (hpvDest As Any, _
               hpvSource As Any, _
               ByVal cbCopy As Long)

         Private Declare Function SHFileOperation Lib "Shell32.dll" _
               Alias "SHFileOperationA" _
               (lpFileOp As Any) As Long

         Private Sub Form_Load()
            Check1.Caption = "Copy All Files in VB Directory"
            Check2.Caption = "Display Custom Message"
            Command1.Caption = "Copy Files"
         End Sub

         Private Sub Command1_Click()
            Dim result As Long
            Dim lenFileop As Long
            Dim foBuf() As Byte
            Dim fileop As SHFILEOPSTRUCT

            lenFileop = LenB(fileop)    ' double word alignment increase
            ReDim foBuf(1 To lenFileop) ' the size of the structure.

            With fileop
               .hwnd = Me.hwnd

               .wFunc = FO_COPY
               ' The files to copy separated by Nulls and terminated by two
               ' nulls
               If Check1.Value = vbChecked Then
                     .pFrom = Environ("windir") & "\*.exe"
                  .fFlags = FOF_SIMPLEPROGRESS Or FOF_FILESONLY
                  .pFrom = Environ("windir") & "\Explorer.exe" _
                           & vbNullChar _
                           & Environ("windir") & "\WinHelp.exe" _
                           & vbNullChar _
                           & vbNullChar
               End If

               .pTo = "C:\testfolder\" & vbNullChar & vbNullChar

               If Check2.Value = vbChecked Then
                  .lpszProgressTitle = "Your custom dialog string " & _
                                       "appears here." & vbNullChar _
                                                       & vbNullChar
               End If
            End With

            ' Now we need to copy the structure into a byte array
            Call CopyMemory(foBuf(1), fileop, lenFileop)

            ' Next we move the last 12 bytes by 2 to byte align the data
            Call CopyMemory(foBuf(19), foBuf(21), 12)
            result = SHFileOperation(foBuf(1))

            If result <> 0 Then  ' Operation failed
               MsgBox Err.LastDllError 'Show the error returned from
                                       'the API.
               If fileop.fAnyOperationsAborted <> 0 Then
                  MsgBox "Operation Failed"
               End If
            End If
         End Sub

Fonte: Retirado do Site da Microsoft


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