'==============================================================================
' TITLE: Form1.vb
'
' CONTENTS:
'
'
' (c) Copyright 2004 Takebishi Electric Sales Corporation
' ALL RIGHTS RESERVED.
'
' DISCLAIMER:
'  This code is provided by the Takebishi Electric Sales Corporation solely
'  to assist in understanding and use of the appropriate OPC Specification(s).
'  This code is provided as-is and without warranty or support of any sort.
'==============================================================================

Option Strict Off
Option Explicit On 
Imports System.Runtime.InteropServices

Public Class Form1
    Inherits System.Windows.Forms.Form


    Const ITEMMAX = 8
    Const STR_OPC_INI As String = "OPCSample.ini"

    Const VAL_CTRL_SPACE = 8
    Const VAL_CTRL_TOP = 192
    Const VAL_CTRL_LEFT = 16
    Const VAL_ITEMNAME_HEIGHT = 24
    Const VAL_ITEMNAME_WIDTH = 88
    Const VAL_VALUE_HEIGHT = VAL_ITEMNAME_HEIGHT
    Const VAL_VALUE_WIDTH = 48
    Const VAL_TIME_HEIGHT = VAL_ITEMNAME_HEIGHT
    Const VAL_TIME_WIDTH = 128
    Const VAL_QUALITY_HEIGHT = VAL_ITEMNAME_HEIGHT
    Const VAL_QUALITY_WIDTH = 40

    Dim WithEvents OPCMyServer As OPCAutomation.OPCServer
    Dim WithEvents OPCMyGroups As OPCAutomation.OPCGroups
    Dim WithEvents OPCMyGroup As OPCAutomation.OPCGroup
    Dim OPCMyItems As OPCAutomation.OPCItems
    Dim OPCMyItem As OPCAutomation.OPCItem

    Dim sItemName(ITEMMAX) As String
    Dim cH(ITEMMAX) As Integer
    Dim sH(ITEMMAX) As Integer
    Dim oVal(ITEMMAX) As Object
    Dim dTime(ITEMMAX) As Date
    Dim wQuality(ITEMMAX) As Short

    Dim bConnect As Boolean

    Dim txtItemName(ITEMMAX - 1) As System.Windows.Forms.TextBox
    Dim txtValue(ITEMMAX - 1) As System.Windows.Forms.TextBox
    Dim txtTime(ITEMMAX - 1) As System.Windows.Forms.TextBox
    Dim txtQuality(ITEMMAX - 1) As System.Windows.Forms.TextBox

    Enum COPY_DIR
        DISP_TO_MEM                         ' display to memory
        MEM_TO_DISP                         ' memory to display
    End Enum


#Region " Windows 僼僅乕儉 僨僓僀僫偱惗惉偝傟偨僐乕僪 "

    Public Sub New()
        MyBase.New()

        ' 偙偺屇傃弌偟偼 Windows 僼僅乕儉 僨僓僀僫偱昁梫偱偡丅
        InitializeComponent()

        ' InitializeComponent() 屇傃弌偟偺屻偵弶婜壔傪捛壛偟傑偡丅

    End Sub

    ' Form 偼丄僐儞億乕僱儞僩堦棗偵屻張棟傪幚峴偡傞偨傔偵 dispose 傪僆乕僶乕儔僀僪偟傑偡丅
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    ' Windows 僼僅乕儉 僨僓僀僫偱昁梫偱偡丅
    Private components As System.ComponentModel.IContainer

    ' 儊儌 : 埲壓偺僾儘僔乕僕儍偼丄Windows 僼僅乕儉 僨僓僀僫偱昁梫偱偡丅
    'Windows 僼僅乕儉 僨僓僀僫傪巊偭偰曄峏偟偰偔偩偝偄丅  
    ' 僐乕僪 僄僨傿僞傪巊偭偰曄峏偟側偄偱偔偩偝偄丅
    Public WithEvents btnAsyncWrite As System.Windows.Forms.Button
    Public WithEvents btnAsyncRead As System.Windows.Forms.Button
    Public WithEvents txtSvrName As System.Windows.Forms.TextBox
    Public WithEvents btnAdvise As System.Windows.Forms.Button
    Public WithEvents txtUpdateRate As System.Windows.Forms.TextBox
    Public WithEvents btnWrite As System.Windows.Forms.Button
    Public WithEvents btnRead As System.Windows.Forms.Button
    Public WithEvents btnConnect As System.Windows.Forms.Button
    Public WithEvents Label6 As System.Windows.Forms.Label
    Public WithEvents Label5 As System.Windows.Forms.Label
    Public WithEvents Label4 As System.Windows.Forms.Label
    Public WithEvents Label3 As System.Windows.Forms.Label
    Public WithEvents Label2 As System.Windows.Forms.Label
    Public WithEvents Label1 As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.btnAsyncWrite = New System.Windows.Forms.Button
        Me.btnAsyncRead = New System.Windows.Forms.Button
        Me.txtSvrName = New System.Windows.Forms.TextBox
        Me.btnAdvise = New System.Windows.Forms.Button
        Me.txtUpdateRate = New System.Windows.Forms.TextBox
        Me.btnWrite = New System.Windows.Forms.Button
        Me.btnRead = New System.Windows.Forms.Button
        Me.btnConnect = New System.Windows.Forms.Button
        Me.Label6 = New System.Windows.Forms.Label
        Me.Label5 = New System.Windows.Forms.Label
        Me.Label4 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label1 = New System.Windows.Forms.Label
        Me.SuspendLayout()
        '
        'btnAsyncWrite
        '
        Me.btnAsyncWrite.BackColor = System.Drawing.SystemColors.Control
        Me.btnAsyncWrite.Cursor = System.Windows.Forms.Cursors.Default
        Me.btnAsyncWrite.Enabled = False
        Me.btnAsyncWrite.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.btnAsyncWrite.ForeColor = System.Drawing.SystemColors.ControlText
        Me.btnAsyncWrite.Location = New System.Drawing.Point(240, 128)
        Me.btnAsyncWrite.Name = "btnAsyncWrite"
        Me.btnAsyncWrite.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.btnAsyncWrite.Size = New System.Drawing.Size(104, 32)
        Me.btnAsyncWrite.TabIndex = 60
        Me.btnAsyncWrite.Text = "Async Write"
        '
        'btnAsyncRead
        '
        Me.btnAsyncRead.BackColor = System.Drawing.SystemColors.Control
        Me.btnAsyncRead.Cursor = System.Windows.Forms.Cursors.Default
        Me.btnAsyncRead.Enabled = False
        Me.btnAsyncRead.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.btnAsyncRead.ForeColor = System.Drawing.SystemColors.ControlText
        Me.btnAsyncRead.Location = New System.Drawing.Point(128, 128)
        Me.btnAsyncRead.Name = "btnAsyncRead"
        Me.btnAsyncRead.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.btnAsyncRead.Size = New System.Drawing.Size(104, 32)
        Me.btnAsyncRead.TabIndex = 59
        Me.btnAsyncRead.Text = "Async Read"
        '
        'txtSvrName
        '
        Me.txtSvrName.Anchor = System.Windows.Forms.AnchorStyles.Left
        Me.txtSvrName.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.txtSvrName.Location = New System.Drawing.Point(96, 16)
        Me.txtSvrName.Name = "txtSvrName"
        Me.txtSvrName.Size = New System.Drawing.Size(136, 20)
        Me.txtSvrName.TabIndex = 58
        Me.txtSvrName.Text = "Takebishi"
        '
        'btnAdvise
        '
        Me.btnAdvise.BackColor = System.Drawing.SystemColors.Control
        Me.btnAdvise.Cursor = System.Windows.Forms.Cursors.Default
        Me.btnAdvise.Enabled = False
        Me.btnAdvise.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.btnAdvise.ForeColor = System.Drawing.SystemColors.ControlText
        Me.btnAdvise.Location = New System.Drawing.Point(16, 128)
        Me.btnAdvise.Name = "btnAdvise"
        Me.btnAdvise.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.btnAdvise.Size = New System.Drawing.Size(104, 32)
        Me.btnAdvise.TabIndex = 57
        Me.btnAdvise.Text = "Advise"
        '
        'txtUpdateRate
        '
        Me.txtUpdateRate.AcceptsReturn = True
        Me.txtUpdateRate.Anchor = CType((((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _
                    Or System.Windows.Forms.AnchorStyles.Left) _
                    Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.txtUpdateRate.BackColor = System.Drawing.SystemColors.Window
        Me.txtUpdateRate.Cursor = System.Windows.Forms.Cursors.IBeam
        Me.txtUpdateRate.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.txtUpdateRate.ForeColor = System.Drawing.SystemColors.WindowText
        Me.txtUpdateRate.Location = New System.Drawing.Point(96, 40)
        Me.txtUpdateRate.MaxLength = 0
        Me.txtUpdateRate.Name = "txtUpdateRate"
        Me.txtUpdateRate.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.txtUpdateRate.Size = New System.Drawing.Size(64, 19)
        Me.txtUpdateRate.TabIndex = 54
        Me.txtUpdateRate.Text = "1000"
        Me.txtUpdateRate.TextAlign = System.Windows.Forms.HorizontalAlignment.Right
        '
        'btnWrite
        '
        Me.btnWrite.BackColor = System.Drawing.SystemColors.Control
        Me.btnWrite.Cursor = System.Windows.Forms.Cursors.Default
        Me.btnWrite.Enabled = False
        Me.btnWrite.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.btnWrite.ForeColor = System.Drawing.SystemColors.ControlText
        Me.btnWrite.Location = New System.Drawing.Point(240, 88)
        Me.btnWrite.Name = "btnWrite"
        Me.btnWrite.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.btnWrite.Size = New System.Drawing.Size(104, 32)
        Me.btnWrite.TabIndex = 49
        Me.btnWrite.Text = "Write"
        '
        'btnRead
        '
        Me.btnRead.BackColor = System.Drawing.SystemColors.Control
        Me.btnRead.Cursor = System.Windows.Forms.Cursors.Default
        Me.btnRead.Enabled = False
        Me.btnRead.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.btnRead.ForeColor = System.Drawing.SystemColors.ControlText
        Me.btnRead.Location = New System.Drawing.Point(128, 88)
        Me.btnRead.Name = "btnRead"
        Me.btnRead.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.btnRead.Size = New System.Drawing.Size(104, 32)
        Me.btnRead.TabIndex = 48
        Me.btnRead.Text = "Read"
        '
        'btnConnect
        '
        Me.btnConnect.BackColor = System.Drawing.SystemColors.Control
        Me.btnConnect.Cursor = System.Windows.Forms.Cursors.Default
        Me.btnConnect.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.btnConnect.ForeColor = System.Drawing.SystemColors.ControlText
        Me.btnConnect.Location = New System.Drawing.Point(240, 16)
        Me.btnConnect.Name = "btnConnect"
        Me.btnConnect.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.btnConnect.Size = New System.Drawing.Size(104, 32)
        Me.btnConnect.TabIndex = 47
        Me.btnConnect.Text = "Connect"
        '
        'Label6
        '
        Me.Label6.BackColor = System.Drawing.SystemColors.Control
        Me.Label6.Cursor = System.Windows.Forms.Cursors.Default
        Me.Label6.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label6.ForeColor = System.Drawing.SystemColors.ControlText
        Me.Label6.Location = New System.Drawing.Point(16, 40)
        Me.Label6.Name = "Label6"
        Me.Label6.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.Label6.Size = New System.Drawing.Size(80, 16)
        Me.Label6.TabIndex = 56
        Me.Label6.Text = "Update Rate"
        Me.Label6.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        '
        'Label5
        '
        Me.Label5.Anchor = System.Windows.Forms.AnchorStyles.Left
        Me.Label5.BackColor = System.Drawing.SystemColors.Control
        Me.Label5.Cursor = System.Windows.Forms.Cursors.Default
        Me.Label5.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label5.ForeColor = System.Drawing.SystemColors.ControlText
        Me.Label5.Location = New System.Drawing.Point(16, 16)
        Me.Label5.Name = "Label5"
        Me.Label5.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.Label5.Size = New System.Drawing.Size(80, 16)
        Me.Label5.TabIndex = 55
        Me.Label5.Text = "Server Name"
        Me.Label5.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        '
        'Label4
        '
        Me.Label4.BackColor = System.Drawing.SystemColors.Control
        Me.Label4.Cursor = System.Windows.Forms.Cursors.Default
        Me.Label4.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label4.ForeColor = System.Drawing.SystemColors.ControlText
        Me.Label4.Location = New System.Drawing.Point(304, 176)
        Me.Label4.Name = "Label4"
        Me.Label4.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.Label4.Size = New System.Drawing.Size(48, 16)
        Me.Label4.TabIndex = 53
        Me.Label4.Text = "Quality"
        '
        'Label3
        '
        Me.Label3.BackColor = System.Drawing.SystemColors.Control
        Me.Label3.Cursor = System.Windows.Forms.Cursors.Default
        Me.Label3.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label3.ForeColor = System.Drawing.SystemColors.ControlText
        Me.Label3.Location = New System.Drawing.Point(168, 176)
        Me.Label3.Name = "Label3"
        Me.Label3.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.Label3.Size = New System.Drawing.Size(65, 16)
        Me.Label3.TabIndex = 52
        Me.Label3.Text = "Date/Time"
        '
        'Label2
        '
        Me.Label2.BackColor = System.Drawing.SystemColors.Control
        Me.Label2.Cursor = System.Windows.Forms.Cursors.Default
        Me.Label2.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label2.ForeColor = System.Drawing.SystemColors.ControlText
        Me.Label2.Location = New System.Drawing.Point(112, 176)
        Me.Label2.Name = "Label2"
        Me.Label2.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.Label2.Size = New System.Drawing.Size(41, 16)
        Me.Label2.TabIndex = 51
        Me.Label2.Text = "Value"
        '
        'Label1
        '
        Me.Label1.BackColor = System.Drawing.SystemColors.Control
        Me.Label1.Cursor = System.Windows.Forms.Cursors.Default
        Me.Label1.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label1.ForeColor = System.Drawing.SystemColors.ControlText
        Me.Label1.Location = New System.Drawing.Point(16, 176)
        Me.Label1.Name = "Label1"
        Me.Label1.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.Label1.Size = New System.Drawing.Size(65, 16)
        Me.Label1.TabIndex = 50
        Me.Label1.Text = "Item Name"