Liren Large Software Subsidy 10/10.iso/l/l407/1.ddi/SEEK.FR_/SEEK.bin

Visual Basic Form | 1993-04-28 | 8.8 KB | 261 lines

VERSION 2.00
Begin Form WinSeek
   BackColor       =   &H00C0C0C0&
   BorderStyle     =   3  'Fixed Double
   Caption         =   "Seek"
   ForeColor       =   &H00000080&
   Height          =   4440
   Left            =   2190
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   4035
   ScaleWidth      =   3690
   Top             =   1575
   Width           =   3810
   Begin PictureBox Picture2
      BorderStyle     =   0  'None
      Height          =   2895
      Left            =   720
      ScaleHeight     =   2895
      ScaleWidth      =   3855
      TabIndex        =   8
      Top             =   1080
      Visible         =   0   'False
      Width           =   3855
      Begin ListBox lstFoundFiles
         Height          =   2370
         Left            =   120
         TabIndex        =   11
         Top             =   480
         Width           =   3375
      End
      Begin Label lblCount
         Caption         =   "0"
         Height          =   255
         Left            =   1200
         TabIndex        =   10
         Top             =   120
         Width           =   1095
      End
      Begin Label lblfound
         Caption         =   "&Files Found:"
         Height          =   255
         Left            =   120
         TabIndex        =   9
         Top             =   120
         Width           =   1095
      End
   End
   Begin PictureBox Picture1
      BorderStyle     =   0  'None
      Height          =   2895
      Left            =   0
      ScaleHeight     =   2895
      ScaleWidth      =   3735
      TabIndex        =   2
      Top             =   120
      Width           =   3735
      Begin DriveListBox drvList
         Height          =   1530
         Left            =   2040
         TabIndex        =   7
         Top             =   480
         Width           =   1575
      End
      Begin DirListBox dirList
         Height          =   1695
         Left            =   2040
         TabIndex        =   6
         Top             =   960
         Width           =   1575
      End
      Begin FileListBox filList
         Height          =   2175
         Left            =   120
         TabIndex        =   5
         Top             =   480
         Width           =   1815
      End
      Begin TextBox txtSearchSpec
         Height          =   285
         Left            =   2040
         TabIndex        =   4
         Text            =   "*.*"
         Top             =   120
         Width           =   1575
      End
      Begin Label lblCriteria
         Caption         =   "Search &Criteria:"
         Height          =   255
         Left            =   600
         TabIndex        =   3
         Top             =   120
         Width           =   1335
      End
   End
   Begin CommandButton cmdSearch
      BackColor       =   &H00C0C0C0&
      Caption         =   "&Search"
      Default         =   -1  'True
      Height          =   720
      Left            =   480
      TabIndex        =   0
      Top             =   3000
      Width           =   1200
   End
   Begin CommandButton cmdExit
      BackColor       =   &H00C0C0C0&
      Caption         =   "E&xit"
      Height          =   720
      Left            =   2040
      TabIndex        =   1
      Top             =   3000
      Width           =   1200
   End
Option Explicit
Dim SearchFlag As Integer    ' Used as flag for cancelling, etc.
Sub cmdExit_Click ()
  If cmdExit.Caption = "E&xit" Then
    End
  Else                ' If Cancel, just end Search.
    SearchFlag = False
  End If
End Sub
Sub cmdSearch_Click ()
' Initialize for search, then call DirDiver to perform recursive search.
Dim FirstPath As String, DirCount As Integer, NumFiles As Integer
Dim result As Integer
  ' Check what the user did last:
  If cmdSearch.Caption = "&Reset" Then  ' If just a reset,
    ResetSearch                         ' initialize and exit.
    txtSearchSpec.SetFocus
    Exit Sub
  End If
  ' Update dirList.Path if it is different from the currently
  ' selected directory, otherwise perform the search.
  If dirList.Path <> dirList.List(dirList.ListIndex) Then
     dirList.Path = dirList.List(dirList.ListIndex)
     Exit Sub         ' Exit so user can take a look before searching.
  End If
  ' Continue with the search.
  Picture2.Move 0, 0
  Picture1.Visible = False
  Picture2.Visible = True
  cmdExit.Caption = "Cancel"
  filList.Pattern = txtSearchSpec.Text
  FirstPath = dirList.Path
  DirCount = dirList.ListCount
  'Start recursive direcory search.
  NumFiles = 0                       ' Reset global foundfiles indicator.
  result = DirDiver(FirstPath, DirCount, "")
  filList.Path = dirList.Path
  cmdSearch.Caption = "&Reset"
  cmdSearch.SetFocus
  cmdExit.Caption = "E&xit"
End Sub
Function DirDiver (NewPath As String, DirCount As Integer, BackUp As String) As Integer
'  Recursively search directories from NewPath down...
'     NewPath is searched on this recursion.
'     BackUp is origin of this recursion.
'     DirCount is number of subdirectories in this directory.
Static FirstErr As Integer
Dim DirsToPeek As Integer, AbandonSearch As Integer, ind As Integer
Dim OldPath As String, ThePath As String, entry As String
Dim retval As Integer
  SearchFlag = True             ' Set flag so user can interrupt.
  DirDiver = False              ' Set to TRUE if there is an error.
  retval = DoEvents()           ' check for events (i.e. user Cancels).
  If SearchFlag = False Then
    DirDiver = True
    Exit Function
  End If
  On Local Error GoTo DirDriverHandler
  DirsToPeek = dirList.ListCount            ' How many directories below this?
  Do While DirsToPeek > 0 And SearchFlag = True
    OldPath = dirList.Path                  ' Save old path for next recursion.
    dirList.Path = NewPath
    If dirList.ListCount > 0 Then
    ' Get to the node bottom.
      dirList.Path = dirList.List(DirsToPeek - 1)
      AbandonSearch = DirDiver((dirList.Path), DirCount%, OldPath)
    End If
    ' Go up 1 level in directories.
    DirsToPeek = DirsToPeek - 1
    If AbandonSearch = True Then Exit Function
  Loop
  ' Call function to enumerate files.
  If filList.ListCount Then
    If Len(dirList.Path) <= 3 Then
    ThePath = dirList.Path         ' If at root level, leave as is...
    Else
    ThePath = dirList.Path + "\"   ' otherwise put "\" before file name.
    End If
    For ind = 0 To filList.ListCount - 1        ' Add conforming files in
    entry = ThePath + filList.List(ind)     ' this directory to listbox.
    lstFoundFiles.AddItem entry
    lblCount.Caption = Str$(Val(lblCount.Caption) + 1)
    Next ind
  End If
  If BackUp <> "" Then         ' If there is a superior
      dirList.Path = BackUp    ' directory, move to it.
  End If
  Exit Function
DirDriverHandler:
  If Err = 7 Then         ' If Out of Memory, assume listbox just got full.
    DirDiver = True       ' Create Msg$ and set return value AbandonSearch.
    MsgBox "You've filled the listbox. Search being abandoned..."
    Exit Function         ' Note that EXIT procedure resets ERR to 0.
  Else                    ' Otherwise display error message and quit.
    MsgBox Error
    End
  End If
End Function
Sub DirList_Change ()
    ' Update File listbox to sync with Dir listbox.
    filList.Path = dirList.Path
End Sub
Sub DirList_LostFocus ()
    dirList.Path = dirList.List(dirList.ListIndex)
End Sub
Sub DrvList_Change ()
    On Error GoTo DriveHandler
    dirList.Path = drvList.Drive
    Exit Sub
DriveHandler:
    drvList.Drive = dirList.Path
    Exit Sub
End Sub
Sub Form_Load ()
    Picture2.Move 0, 0
    Picture2.Width = WinSeek.ScaleWidth
    Picture2.BackColor = WinSeek.BackColor
    lblCount.BackColor = WinSeek.BackColor
    lblCriteria.BackColor = WinSeek.BackColor
    lblFound.BackColor = WinSeek.BackColor
    Picture1.Move 0, 0
    Picture1.Width = WinSeek.ScaleWidth
    Picture1.BackColor = WinSeek.BackColor
End Sub
Sub Form_Unload (Cancel As Integer)
    End
End Sub
Sub ResetSearch ()
' Reinitialize before starting a new search.
    lstFoundFiles.Clear
    lblCount.Caption = 0
    SearchFlag = False                  ' Flag indicating search in progress.
    Picture2.Visible = False
    cmdSearch.Caption = "&Search"
    cmdExit.Caption = "E&xit"
    Picture1.Visible = True
    dirList.Path = CurDir$: drvList.Drive = dirList.Path ' Reset DOS path.
End Sub
Sub txtSearchSpec_Change ()
' Update file list box if user changes pattern.
    filList.Pattern = txtSearchSpec.Text
End Sub
Sub txtSearchSpec_GotFocus ()
    txtSearchSpec.SelStart = 0      ' Highlight the current entry.
    txtSearchSpec.SelLength = Len(txtSearchSpec.Text)
End Sub