?? frmabout.frm
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VERSION 5.00
Begin VB.Form frmAbout
BorderStyle = 3 'Fixed Dialog
Caption = "About KEPServerEX_OPC_Example"
ClientHeight = 3450
ClientLeft = 45
ClientTop = 330
ClientWidth = 7485
ClipControls = 0 'False
ControlBox = 0 'False
LinkTopic = "Form1"
MaxButton = 0 'False
MinButton = 0 'False
ScaleHeight = 3450
ScaleWidth = 7485
ShowInTaskbar = 0 'False
StartUpPosition = 1 'CenterOwner
Tag = "About KEPServerEX_OPC_Example"
Begin VB.PictureBox picIcon
AutoSize = -1 'True
BackColor = &H00C0C0C0&
ClipControls = 0 'False
Height = 1605
Left = 120
Picture = "frmAbout.frx":0000
ScaleHeight = 1545
ScaleMode = 0 'User
ScaleWidth = 7200
TabIndex = 2
TabStop = 0 'False
Top = 720
Width = 7260
End
Begin VB.CommandButton cmdOK
Cancel = -1 'True
Caption = "OK"
Default = -1 'True
Height = 345
Left = 6000
TabIndex = 0
Tag = "OK"
Top = 2520
Width = 1260
End
Begin VB.CommandButton cmdSysInfo
Caption = "&System Info..."
Height = 345
Left = 6000
TabIndex = 1
Tag = "&System Info..."
Top = 3000
Width = 1245
End
Begin VB.Label Purpose
AutoSize = -1 'True
Caption = "Visual Basic OPC Example"
BeginProperty Font
Name = "Arial"
Size = 12
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 285
Left = 4320
TabIndex = 5
Tag = "Product"
Top = 360
Width = 3045
End
Begin VB.Label lblTitle
Caption = "Application Title"
ForeColor = &H00000000&
Height = 240
Left = 4320
TabIndex = 4
Tag = "Application Title"
Top = 120
Width = 3045
End
Begin VB.Line Line1
BorderColor = &H00808080&
BorderStyle = 6 'Inside Solid
Index = 1
X1 = 225
X2 = 7200
Y1 = 2430
Y2 = 2430
End
Begin VB.Line Line1
BorderColor = &H00FFFFFF&
BorderWidth = 2
Index = 0
X1 = 240
X2 = 7200
Y1 = 2445
Y2 = 2445
End
Begin VB.Label lblVersion
Caption = "Version"
BeginProperty Font
Name = "MS Sans Serif"
Size = 13.5
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 435
Left = 240
TabIndex = 3
Tag = "Version"
Top = 2520
Width = 2205
End
End
Attribute VB_Name = "frmAbout"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
' I can't take much credit for the about box code this
' was lifted from a test program that VB autogenerated
' using its app wizard. The useful tidbits here is
' how to access the registry from VB
Option Explicit
Option Base 1
' Reg Key Security Options...
Const KEY_ALL_ACCESS = &H2003F
' Reg Key ROOT Types...
Const HKEY_LOCAL_MACHINE = &H80000002
Const ERROR_SUCCESS = 0
Const REG_SZ = 1 ' Unicode nul terminated string
Const REG_DWORD = 4 ' 32-bit number
Const gREGKEYSYSINFOLOC = "SOFTWARE\Microsoft\Shared Tools Location"
Const gREGVALSYSINFOLOC = "MSINFO"
Const gREGKEYSYSINFO = "SOFTWARE\Microsoft\Shared Tools\MSINFO"
Const gREGVALSYSINFO = "PATH"
Private Declare Function RegOpenKeyEx Lib "advapi32" Alias "RegOpenKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal ulOptions As Long, ByVal samDesired As Long, ByRef phkResult As Long) As Long
Private Declare Function RegQueryValueEx Lib "advapi32" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, ByRef lpType As Long, ByVal lpData As String, ByRef lpcbData As Long) As Long
Private Declare Function RegCloseKey Lib "advapi32" (ByVal hKey As Long) As Long
Private Sub Form_Load()
lblVersion.Caption = "Version " & App.Major & "." & App.Minor & "." & App.Revision
lblTitle.Caption = App.Title
End Sub
Private Sub cmdSysInfo_Click()
Call StartSysInfo
End Sub
Private Sub cmdOK_Click()
Unload Me
End Sub
Public Sub StartSysInfo()
On Error GoTo SysInfoErr
Dim rc As Long
Dim SysInfoPath As String
' Try To Get System Info Program Path\Name From Registry...
If GetKeyValue(HKEY_LOCAL_MACHINE, gREGKEYSYSINFO, gREGVALSYSINFO, SysInfoPath) Then
' Try To Get System Info Program Path Only From Registry...
ElseIf GetKeyValue(HKEY_LOCAL_MACHINE, gREGKEYSYSINFOLOC, gREGVALSYSINFOLOC, SysInfoPath) Then
' Validate Existance Of Known 32 Bit File Version
If (Dir(SysInfoPath & "\MSINFO32.EXE") <> "") Then
SysInfoPath = SysInfoPath & "\MSINFO32.EXE"
' Error - File Can Not Be Found...
Else
GoTo SysInfoErr
End If
' Error - Registry Entry Can Not Be Found...
Else
GoTo SysInfoErr
End If
Call Shell(SysInfoPath, vbNormalFocus)
Exit Sub
SysInfoErr:
MsgBox "System Information Is Unavailable At This Time", vbOKOnly
End Sub
Public Function GetKeyValue(KeyRoot As Long, KeyName As String, SubKeyRef As String, ByRef KeyVal As String) As Boolean
Dim i As Long ' Loop Counter
Dim rc As Long ' Return Code
Dim hKey As Long ' Handle To An Open Registry Key
Dim hDepth As Long '
Dim KeyValType As Long ' Data Type Of A Registry Key
Dim tmpVal As String ' Tempory Storage For A Registry Key Value
Dim KeyValSize As Long ' Size Of Registry Key Variable
'------------------------------------------------------------
' Open RegKey Under KeyRoot {HKEY_LOCAL_MACHINE...}
'------------------------------------------------------------
rc = RegOpenKeyEx(KeyRoot, KeyName, 0, KEY_ALL_ACCESS, hKey) ' Open Registry Key
If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError ' Handle Error...
tmpVal = String$(1024, 0) ' Allocate Variable Space
KeyValSize = 1024 ' Mark Variable Size
'------------------------------------------------------------
' Retrieve Registry Key Value...
'------------------------------------------------------------
rc = RegQueryValueEx(hKey, SubKeyRef, 0, KeyValType, tmpVal, KeyValSize) ' Get/Create Key Value
If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError ' Handle Errors
If (Asc(Mid(tmpVal, KeyValSize, 1)) = 0) Then ' Win95 Adds Null Terminated String...
tmpVal = Left(tmpVal, KeyValSize - 1) ' Null Found, Extract From String
Else ' WinNT Does NOT Null Terminate String...
tmpVal = Left(tmpVal, KeyValSize) ' Null Not Found, Extract String Only
End If
'------------------------------------------------------------
' Determine Key Value Type For Conversion...
'------------------------------------------------------------
Select Case KeyValType ' Search Data Types...
Case REG_SZ ' String Registry Key Data Type
KeyVal = tmpVal ' Copy String Value
Case REG_DWORD ' Double Word Registry Key Data Type
For i = Len(tmpVal) To 1 Step -1 ' Convert Each Bit
KeyVal = KeyVal + Hex(Asc(Mid(tmpVal, i, 1))) ' Build Value Char. By Char.
Next
KeyVal = Format$("&h" + KeyVal) ' Convert Double Word To String
End Select
GetKeyValue = True ' Return Success
rc = RegCloseKey(hKey) ' Close Registry Key
Exit Function ' Exit
GetKeyError: ' Cleanup After An Error Has Occured...
KeyVal = "" ' Set Return Val To Empty String
GetKeyValue = False ' Return Failure
rc = RegCloseKey(hKey) ' Close Registry Key
End Function
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