Using Visual Basic 5 (Platinum Edition)/vb5.iso/Code/ch45/chp531a.frm

Visual Basic Form | 1997-07-04 | 6.7 KB | 233 lines

VERSION 5.00
Object = "{F9043C88-F6F2-101A-A3C9-08002B2F49FB}#1.1#0"; "COMDLG32.OCX"
Begin VB.Form frmChp531a
   Caption         =   "Chapter 53 Sample 1"
   ClientHeight    =   3345
   ClientLeft      =   2010
   ClientTop       =   1545
   ClientWidth     =   5400
   LinkTopic       =   "Form1"
   ScaleHeight     =   3345
   ScaleWidth      =   5400
   Begin VB.TextBox txtValue
      Height          =   300
      Left            =   1560
      TabIndex        =   3
      Top             =   1440
      Width           =   2505
   End
   Begin VB.ComboBox comEntry
      Height          =   315
      Left            =   1560
      Style           =   2  'Dropdown List
      TabIndex        =   2
      ToolTipText     =   "Selection The Section You Wish to View"
      Top             =   1020
      Width           =   2505
   End
   Begin VB.ComboBox comSection
      Height          =   315
      Left            =   1560
      Style           =   2  'Dropdown List
      TabIndex        =   1
      ToolTipText     =   "Selection The Section You Wish to View"
      Top             =   630
      Width           =   2505
   End
   Begin MSComDlg.CommonDialog diachp531
      Left            =   660
      Top             =   2760
      _ExtentX        =   847
      _ExtentY        =   847
      _Version        =   327680
      CancelError     =   -1  'True
      DialogTitle     =   "Select File to Open"
      FileName        =   "*.ini"
      Filter          =   "Initialization file (*.ini)|*.ini"
   End
   Begin VB.CommandButton cmdSave
      Caption         =   "&Save"
      Height          =   300
      Left            =   3450
      TabIndex        =   4
      Top             =   2910
      Width           =   700
   End
   Begin VB.CommandButton cmdSelect
      Caption         =   "&?"
      Height          =   315
      Left            =   4170
      TabIndex        =   7
      Top             =   240
      Width           =   345
   End
   Begin VB.TextBox txtFileName
      Height          =   300
      Left            =   1560
      TabIndex        =   0
      ToolTipText     =   "Enter the Path/Name of the INI file or Depress the ""?"" button to Select an INI file"
      Top             =   240
      Width           =   2505
   End
   Begin VB.CommandButton cmdExit
      Caption         =   "E&xit"
      Height          =   300
      Left            =   4260
      TabIndex        =   5
      Top             =   2910
      Width           =   700
   End
   Begin VB.Label lblValue
      Alignment       =   1  'Right Justify
      Caption         =   "Value"
      Height          =   270
      Left            =   270
      TabIndex        =   10
      Top             =   1440
      Width           =   1245
   End
   Begin VB.Label lblEntryName
      Alignment       =   1  'Right Justify
      Caption         =   "Entry Name"
      Height          =   270
      Left            =   240
      TabIndex        =   9
      Top             =   1050
      Width           =   1245
   End
   Begin VB.Label lblSection
      Alignment       =   1  'Right Justify
      Caption         =   "Section"
      Height          =   270
      Left            =   240
      TabIndex        =   8
      Top             =   660
      Width           =   1245
   End
   Begin VB.Label lblIniFile
      Alignment       =   1  'Right Justify
      Caption         =   "INI File"
      Height          =   270
      Left            =   240
      TabIndex        =   6
      Top             =   240
      Width           =   1245
   End
Attribute VB_Name = "frmChp531a"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Option Base 1
Private Sub cmdSave_Click()
Dim nbytes As Long
nbytes = WritePrivateProfileString(comSection.Text, comEntry.Text, txtValue.Text, txtFileName.Text)
End Sub
Private Sub comEntry_Click()
Dim nbytes As String
Dim cvalue  As String
' Initialize returned string
' --------------------------
cvalue = Space$(4096)
nbytes = GetPrivateProfileString((comSection.Text), (comEntry.Text), "", cvalue, 4096, txtFileName.Text)
txtValue.Text = cvalue
End Sub
Private Sub comSection_Click()
Dim nbytes As Long
Dim cvalues As String * 32767
Dim cbuffer As String
Dim x As Integer
Dim y As Integer
Dim ctext As String
Dim nend As Integer
comEntry.Clear
txtValue.Text = ""
nbytes = GetPrivateProfileSection(comSection.Text, cvalues, 32767, txtFileName.Text)
' get all of the values
x = 1
y = 0
Do While Not nend = True
    x = InStr(y + 1, cvalues, Chr(0))
    ctext = Mid$(cvalues, y + 1, x - y - 1)
    If Len(ctext) = 0 Then
        Exit Do
    End If
    '
    'Strip off the "=" and value
    comEntry.AddItem Mid$(ctext, 1, InStr(ctext, "=") - 1)
    y = x
End Sub
Private Sub cmdExit_Click()
Unload Me
End Sub
Private Sub cmdSelect_Click()
Dim nbytes As Long
Dim csection As String
Dim cbuffer As String
Dim cstring As String
Dim nfirst As Integer
On Error Resume Next
If Len(txtFileName.Text) = 0 Then
    diachp531.filename = ""
    diachp531.ShowOpen
    If Err = cdlCancel Then
        ' the user depressed cancel
        Exit Sub
    End If
    txtFileName.Text = diachp531.filename
End If
txtValue.Text = ""
comSection.Clear
If Len(txtFileName.Text) = 0 Then
' There has not been a file selected exit
    Exit Sub
End If
If Len(Dir$(txtFileName.Text)) = 0 Then
' invalid file name
    Exit Sub
End If
Open txtFileName.Text For Input As #1
Do While EOF(1) = False
    cstring = Input$(1, #1)
    If cstring = "[" Then
        nfirst = True
        ' Drop the Bracket
        cstring = ""

    End If
    If cstring = "]" Then
        If nfirst = True Then

           If Len(csection) > 0 Then

                'Add it to the selction list
                comSection.AddItem csection
                ' Drop The trailing Braket
                csection = ""

            End If

            nfirst = False

        End If

       nfirst = False
    End If
    If nfirst = True Then

        csection = csection & cstring
    End If
Close #1
comSection.ListIndex = 0
On Error GoTo 0
End Sub
Private Sub Form_Unload(Cancel As Integer)
Set frmChp531a = Nothing
End Sub
Private Sub txtFileName_LostFocus()
If Len(txtFileName.Text) > 0 Then
    cmdSelect_Click
End If
End Sub