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| WIA SDK sample Widget - Reloaded for XP and Win 7 64bit
>>>>>>SAVE AS: widget.vbp:
Type=Exe
Reference=*\G{00020430-0000-0000-C000-000000000046}#2.0#0#C:\Windows\SysWOW64\stdole2.tlb#OLE Automation
Reference=*\G{94A0E92D-43C0-494E-AC29-FD45948A5221}#1.0#0#C:\Windows\SysWow64\wiaaut.dll#Microsoft Windows Image Acquisition Library v2.0
Reference=*\G{420B2830-E718-11CF-893D-00A0C9054228}#1.0#0#C:\Windows\SysWow64\scrrun.dll#Microsoft Scripting Runtime
Object={831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.0#0; MSCOMCTL.OCX
Form=Widget.frm
IconForm="Form1"
Startup="Form1"
ExeName32="Widget.exe"
Command32=""
Name="Widget"
HelpContextID="0"
CompatibleMode="0"
MajorVer=1
MinorVer=0
RevisionVer=0
AutoIncrementVer=0
ServerSupportFiles=0
VersionCompanyName="Microsoft Corporation"
CompilationType=0
OptimizationType=0
FavorPentiumPro(tm)=0
CodeViewDebugInfo=0
NoAliasing=0
BoundsCheck=0
OverflowCheck=0
FlPointCheck=0
FDIVCheck=0
UnroundedFP=0
StartMode=0
Unattended=0
Retained=0
ThreadPerObject=0
MaxNumberOfThreads=1
[MS Transaction Server]
AutoRefresh=1
>>>>>>SAVE AS: widget.frm:
VERSION 5.00
Object = "{831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.0#0"; "MSCOMCTL.OCX"
Begin VB.Form Form1
Caption = "Form1"
ClientHeight = 5775
ClientLeft = 60
ClientTop = 450
ClientWidth = 8895
LinkTopic = "Form1"
ScaleHeight = 5775
ScaleWidth = 8895
StartUpPosition = 3 'Windows Default
Begin VB.CommandButton Command2
Caption = "Properties"
Height = 375
Left = 3000
TabIndex = 8
Top = 2640
Width = 1815
End
Begin MSComctlLib.ListView ListView4
Height = 1455
Left = 120
TabIndex = 7
Top = 120
Width = 2775
_ExtentX = 4895
_ExtentY = 2566
LabelWrap = -1 'True
HideSelection = -1 'True
_Version = 393217
ForeColor = -2147483640
BackColor = -2147483643
BorderStyle = 1
Appearance = 1
NumItems = 0
End
Begin MSComctlLib.ListView ListView3
Height = 855
Left = 120
TabIndex = 6
Top = 1680
Width = 2775
_ExtentX = 4895
_ExtentY = 1508
LabelWrap = -1 'True
HideSelection = -1 'True
_Version = 393217
ForeColor = -2147483640
BackColor = -2147483643
BorderStyle = 1
Appearance = 1
NumItems = 0
End
Begin VB.CommandButton Command1
Caption = "Transfer"
Height = 375
Left = 120
TabIndex = 4
Top = 2640
Width = 2775
End
Begin VB.PictureBox VideoPreview1
Height = 2895
Left = 5400
ScaleHeight = 2835
ScaleWidth = 3315
TabIndex = 3
Top = 120
Width = 3375
End
Begin MSComctlLib.TreeView TreeView1
Height = 2415
Left = 3000
TabIndex = 2
Top = 120
Width = 2295
_ExtentX = 4048
_ExtentY = 4260
_Version = 393217
LabelEdit = 1
LineStyle = 1
Style = 7
Appearance = 1
End
Begin VB.PictureBox Picture1
Appearance = 0 'Flat
BackColor = &H80000005&
ForeColor = &H80000008&
Height = 1455
Left = 120
ScaleHeight = 1425
ScaleWidth = 2745
TabIndex = 1
Top = 120
Width = 2775
End
Begin MSComctlLib.ListView ListView2
Height = 2895
Left = 5400
TabIndex = 5
Top = 120
Width = 3375
_ExtentX = 5953
_ExtentY = 5106
LabelWrap = -1 'True
HideSelection = -1 'True
_Version = 393217
ForeColor = -2147483640
BackColor = -2147483643
BorderStyle = 1
Appearance = 1
NumItems = 0
End
Begin MSComctlLib.ListView ListView1
Height = 2535
Left = 120
TabIndex = 0
Top = 3120
Width = 8655
_ExtentX = 15266
_ExtentY = 4471
LabelWrap = -1 'True
HideSelection = -1 'True
_Version = 393217
ForeColor = -2147483640
BackColor = -2147483643
BorderStyle = 1
Appearance = 1
NumItems = 0
End
Begin VB.PictureBox CommonDialog1
Height = 480
Left = 4800
ScaleHeight = 420
ScaleWidth = 1140
TabIndex = 9
Top = 2640
Width = 1200
End
Begin VB.PictureBox wia
Height = 480
Left = 5640
ScaleHeight = 420
ScaleWidth = 1140
TabIndex = 10
Top = 240
Width = 1200
End
Begin VB.Image Image1
Height = 2535
Left = 120
Stretch = -1 'True
Top = 3120
Width = 8655
End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Dim CurrentItem As Item
Dim CurrentDevice As Device
Dim MinHeight As Long
Dim MinWidth As Long
Dim BottomMargin As Long
Dim RightMargin As Long
Dim MiddleMargin As Long
'Donald_A changed VB6 example "Widget.vbp" from WIA SDK to work both on XP and Windows 7 64bit
'Note: There are problems using the wiaaut.dll Control on Windows 7 so I deleted the Control and added wiaaut.dll as a Reference instead.
'With this change from a Control to a Reference, the x.RegisterEvent becomes irrelevant and x_OnEvent will never be called.
'Also with the change, the VideoPreview window is no longer available to add to a form, so this element will not be addressable
'
'In Win 7, additionally the img handle returned with x.executecommand(X) when called to trip the shutter is returned as a null value, rather
'than the img handle of the latest captured photo as it is in Win XP. Additionally, since the x.executecommand(X) call does not pause processing
'in Win 7 like it does in XP, some delay logic has to be added (if not XP) before subsequent commands and controls are sent to the camera.
'This is accomplished by checking img count on the camera before the shutter is tripped, then looping until the photo count is incremented by
'one. The same also should occur if using additional routines to copy photos to the PC, using the same type of sleep loop and FSO to check
'for the image existing on the PC, then continuing on with setting camera constants or taking more shots.
'Consulting available donphillipe <\AT\> hot mail dot com
Dim WiaObj As New wia.CommonDialog
Dim WiaImg As New wia.ImageFile
Dim WiaDev As wia.Device
Dim WiaItm As wia.Item
Dim WiaDevManager As wia.DeviceManager
Private Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long) 'required so we can wait for photos to save if running windows 7
Dim ExecuteReturnsNull As Boolean
'end of add
Private Sub Form_Load()
ExecuteReturnsNull = False 'well assume no Windows 7 and thus the execute command will return the image pointer to the photo we take; otherwise, we'll have
'to iterate the photo list later to download it
Set WiaObj = New wia.CommonDialog
Set WiaDevManager = New wia.DeviceManager
Set WiaObj = New wia.CommonDialog
Set WiaImg = New wia.ImageFile
MinHeight = Me.Height
MinWidth = Me.Width
BottomMargin = Me.Height - ListView1.Top - ListView1.Height
RightMargin = Me.Width - ListView1.Left - ListView1.Width
MiddleMargin = ListView2.Left - TreeView1.Left - TreeView1.Width
ListView1.ColumnHeaders.Add , , "Name", ListView1.Width / 7
ListView1.ColumnHeaders.Add , , "Id", ListView1.Width / 7
ListView1.ColumnHeaders.Add , , "Type", ListView1.Width / 7
ListView1.ColumnHeaders.Add , , "Value", ListView1.Width / 7
ListView1.ColumnHeaders.Add , , "SubType", ListView1.Width / 7
ListView1.ColumnHeaders.Add , , "Default", ListView1.Width / 7
ListView1.ColumnHeaders.Add , , "Values", ListView1.Width / 7
ListView1.View = lvwReport
ListView2.ColumnHeaders.Add , , "Format", ListView2.Width
ListView2.View = lvwReport
ListView3.ColumnHeaders.Add , , "Id", ListView3.Width / 3
ListView3.ColumnHeaders.Add , , "Name", ListView3.Width / 3
ListView3.ColumnHeaders.Add , , "Description", ListView3.Width / 3
ListView3.View = lvwReport
ListView4.ColumnHeaders.Add , , "Id", ListView3.Width / 3
ListView4.ColumnHeaders.Add , , "Name", ListView3.Width / 3
ListView4.ColumnHeaders.Add , , "Description", ListView3.Width / 3
ListView4.View = lvwReport
'D.A. alter
'Note: The WiaDevManager_OnEvent sub will not fire if you load the wiaaut.dll via a Reference and not via a Control
' However, I have left the code intact for future reference and to match the original Widget example that uses Control
WiaDevManager.RegisterEvent wiaEventDeviceConnected
WiaDevManager.RegisterEvent wiaEventDeviceDisconnected
BuildTree
'end of add
End Sub
Private Sub BuildTree()
Dim di As DeviceInfo
Dim dev As Device
Dim nde As Node
'D.A.
Dim devices As Integer
devices = 0
ListView1.ListItems.Clear
TreeView1.Nodes.Clear
'D.A. change for no control
For Each di In WiaDevManager.DeviceInfos
'For Each di In wia.DeviceInfos
devices = devices + 1
Set dev = di.Connect
If Not dev Is Nothing Then
Set nde = TreeView1.Nodes.Add(, , , di.Properties("Name").Value)
Set nde.Tag = dev
EnumChildren dev.Items, nde
End If
Next
If devices = 0 Then
MsgBox "No devices were found ...."
End
End If
End Sub
Private Sub EnumChildren(ByRef itms As Items, ByRef nde As Node)
Dim itm As Item
Dim newNode As Node
For Each itm In itms
Set newNode = TreeView1.Nodes.Add(nde.Index, tvwChild, , itm.Properties("Item Name").Value)
Set newNode.Tag = itm
If itm.Items.Count > 0 Then EnumChildren itm.Items, newNode
Next
End Sub
Private Sub Command2_Click()
If Not CurrentItem Is Nothing Then
'D.A. change
'CommonDialog1.ShowItemProperties CurrentItem
WiaObj.ShowItemProperties CurrentItem
End If
If Not CurrentDevice Is Nothing Then
'D.A. change
'CommonDialog1.ShowDeviceProperties CurrentDevice
WiaObj.ShowDeviceProperties CurrentDevice
End If
End Sub
Private Function PropType(id As WiaPropertyType) As String
Select Case id
Case BooleanPropertyType
PropType = "Boolean"
Case BytePropertyType
PropType = "Byte"
Case ClassIDPropertyType
PropType = "Class ID"
Case CurrencyPropertyType
PropType = "Currency"
Case DatePropertyType
PropType = "Date"
Case DoublePropertyType
PropType = "Double"
Case ErrorCodePropertyType
PropType = "Error Code"
Case FileTimePropertyType
PropType = "File Time"
Case HandlePropertyType
PropType = "Handle"
Case IntegerPropertyType
PropType = "Integer"
Case LargeIntegerPropertyType
PropType = "Large Integer"
Case LongPropertyType
PropType = "Long"
Case ObjectPropertyType
PropType = "Object"
Case SinglePropertyType
PropType = "Single"
Case StringPropertyType
PropType = "String"
Case UnsignedIntegerPropertyType
PropType = "Unsigned Integer"
Case UnsignedLargeIntegerPropertyType
PropType = "Unsigned Large Integer"
Case UnsignedLongPropertyType
PropType = "Unsigned Long"
Case VariantPropertyType
PropType = "Variant"
Case VectorOfBooleansPropertyType
PropType = "Vector Of Booleans"
Case VectorOfBytesPropertyType
PropType = "Vector Of Bytes"
Case VectorOfClassIDsPropertyType
PropType = "Vector Of Class IDs"
Case VectorOfCurrenciesPropertyType
PropType = "Vector Of Currencies"
Case VectorOfDatesPropertyType
PropType = "Vector Of Dates"
Case VectorOfDoublesPropertyType
PropType = "Vector Of Doubles"
Case VectorOfErrorCodesPropertyType
PropType = "Vector Of Error Codes"
Case VectorOfFileTimesPropertyType
PropType = "Vector Of File Times"
Case VectorOfIntegersPropertyType
PropType = "Vector Of Integers"
Case VectorOfLargeIntegersPropertyType
PropType = "Vector Of Large Integers"
Case VectorOfLongsPropertyType
PropType = "Vector Of Longs"
Case VectorOfSinglesPropertyType
PropType = "Vector Of Singles"
Case VectorOfStringsPropertyType
PropType = "Vector Of Strings"
Case VectorOfUnsignedIntegersPropertyType
PropType = "Vector Of Unsigned Integers"
Case VectorOfUnsignedLargeIntegersPropertyType
PropType = "Vector Of Unsigned Large Integers"
Case VectorOfUnsignedLongsPropertyType
PropType = "Vector Of Unsigned Longs"
Case VectorOfVariantsPropertyType
PropType = "Vector Of Variants"
Case Else
PropType = "Unsupported"
End Select
End Function
Private Sub EnumCommands(ByRef cmds As DeviceCommands)
Dim i As Integer
Dim cmd As DeviceCommand
Dim li As ListItem
ListView3.ListItems.Clear
If cmds.Count > 0 Then
For Each cmd In cmds
Set li = ListView3.ListItems.Add(, , cmd.CommandID)
li.SubItems(1) = cmd.Name
li.SubItems(2) = cmd.Description
Next
End If
End Sub
Private Sub EnumEvents(ByRef evts As DeviceEvents)
Dim i As Integer
Dim evt As DeviceEvent
Dim li As ListItem
ListView4.ListItems.Clear
If evts.Count > 0 Then
For Each evt In evts
Set li = ListView4.ListItems.Add(, , evt.EventID)
li.SubItems(1) = evt.Name
li.SubItems(2) = evt.Description
Next
End If
End Sub
Private Sub EnumFormats(ByRef fmts As Formats)
Dim v As Variant
Dim i As Integer
ListView2.ListItems.Clear
If fmts.Count > 0 Then
For Each v In fmts
ListView2.ListItems.Add , , v
Next
End If
End Sub
Private Sub EnumProperties(ByRef props As Properties, ByRef ThumbnailData As Vector, ByRef ThumbnailWidth As Long, ByRef ThumbnailHeight As Long)
Dim p As Property
Dim i As Long
Dim s As String
Dim li As ListItem
Dim v As Vector
Dim pc As Integer
On Error GoTo BadDriver
ListView1.ListItems.Clear
pc = 0
If props.Count > 0 Then
For Each p In props
Set li = ListView1.ListItems.Add(, , p.Name)
Set li.Tag = p
li.SubItems(1) = p.PropertyID
li.SubItems(2) = PropType(p.Type)
If Not p.IsVector Then
li.SubItems(3) = p.Value
Else
s = ""
Set v = p.Value
For i = 1 To v.Count
s = s & CStr(v(i))
If i < 50 Then
If i <> v.Count Then
s = s & ", "
End If
Else
s = s & ", ... (Size = " & v.Count & ")"
Exit For
End If
Next
li.SubItems(3) = s
End If
If p.Name = "Thumbnail Data" Then Set ThumbnailData = p.Value
If p.Name = "Thumbnail Width" Then ThumbnailWidth = p.Value
If p.Name = "Thumbnail Height" Then ThumbnailHeight = p.Value
Select Case p.SubType
Case ListSubType
li.SubItems(4) = "List"
li.SubItems(5) = p.SubTypeDefault
s = ""
Set v = p.SubTypeValues
For i = 1 To v.Count
s = s & CStr(v(i))
If i < 50 Then
If i <> v.Count Then
s = s & ", "
End If
Else
s = s & ", ... (Size = " & v.Count & ")"
Exit For
End If
Next
li.SubItems(6) = s
Case FlagSubType
li.SubItems(4) = "Flags"
li.SubItems(5) = p.SubTypeDefault
s = ""
Set v = p.SubTypeValues
For i = 1 To v.Count
s = s & CStr(v(i))
If i <> v.Count Then
s = s & ", "
End If
Next
li.SubItems(6) = s
Case RangeSubType
li.SubItems(4) = "Range"
li.SubItems(5) = p.SubTypeDefault
li.SubItems(6) = "Min = " & p.SubTypeMin & ", Max = " & p.SubTypeMax & ", Step = " & p.SubTypeStep
Case Else
li.SubItems(4) = "Unspecified"
End Select
BadDriverResume:
pc = pc + 1
Next
End If
Exit Sub
BadDriver:
If Err.Number = -2145320836 Then
MsgBox Err.Description, vbOKOnly, p.Name & " Property"
Err.Clear
Resume BadDriverResume
Else
MsgBox Err.Description
Resume
End If
End Sub
Private Sub Command1_Click()
If Not CurrentItem Is Nothing Then
Dim img As ImageFile
'D.A. changed
'Set img = CommonDialog1.ShowTransfer(CurrentItem)
Set img = WiaObj.ShowTransfer(CurrentItem)
If Not img Is Nothing Then
Set Image1.Picture = img.FileData.Picture
ListView1.Visible = False
End If
End If
End Sub
Private Sub ListView3_DblClick()
Dim li As ListItem
Set li = ListView3.SelectedItem
Dim itm As wia.Item
Dim img As wia.ImageFile
Dim dev As wia.Device
Dim di As wia.DeviceInfo
Dim pItmCtr As Integer, cItmCtr As Integer, forCtr As Integer
If Not CurrentDevice Is Nothing Then
pItmCtr = CurrentDevice.Items.Count 'the count of photos on the card before we fire the shutter
Set itm = CurrentDevice.ExecuteCommand(li.Text)
If itm Is Nothing Then 'WIA returns null for "itm" when running this on Windows 7 so we have to search the images to find the last one
ExecuteReturnsNull = True 'A null value for itm flags this as a Windows 7 system
For forCtr = 1 To 100 'we keep comparing the count before and after the photo taken until it increases by 1
Sleep (200) 'then we assume the missing handle from the execute command will be the last image in the list
cItmCtr = CurrentDevice.Items.Count 'and we use the last photo in the batch on the camera card to display
If pItmCtr <> cItmCtr Then Exit For
Next
If pItmCtr <> cItmCtr Then
Set itm = CurrentDevice.Items.Item(cItmCtr)
If Not itm Is Nothing Then
Set img = WiaObj.ShowTransfer(itm)
If Not img Is Nothing Then
Set Image1.Picture = img.FileData.Picture
ListView1.Visible = False
End If
End If
Else
MsgBox "A timeout occured waiting for an image to be created on camera after shutter fired."
Exit Sub
End If
Else
Set img = WiaObj.ShowTransfer(itm)
If Not itm Is Nothing Then
'D.A. changed
'Set img = CommonDialog1.ShowTransfer(itm)
Set img = WiaObj.ShowTransfer(itm)
If Not img Is Nothing Then
Set Image1.Picture = img.FileData.Picture
ListView1.Visible = False
End If
End If
End If
End If
If Not CurrentItem Is Nothing Then
pItmCtr = CurrentItem.Items.Count
Set itm = CurrentItem.ExecuteCommand(li.Text)
If itm Is Nothing Then 'WIA returns null for "itm" when running this on Windows 7 so we have to search the images to find the last one
ExecuteReturnsNull = True 'A null value for itm flags this as a Windows 7 system
For forCtr = 1 To 100 'we keep comparing the count before and after the photo taken until it increases by 1
Sleep (200) 'then we assume the missing handle from the execute command will be the last image in the list
cItmCtr = CurrentItem.Items.Count 'and we use the last photo in the batch on the camera card to display
If pItmCtr <> cItmCtr Then Exit For
Next
If pItmCtr <> cItmCtr Then
Set itm = CurrentItem.Items.Item(cItmCtr)
If Not itm Is Nothing Then
Set img = WiaObj.ShowTransfer(itm)
If Not img Is Nothing Then
Set Image1.Picture = img.FileData.Picture
ListView1.Visible = False
End If
End If
Else
MsgBox "A timeout occured waiting for an image to be created on camera after shutter fired."
Exit Sub
End If
Else
Set img = WiaObj.ShowTransfer(itm)
If Not img Is Nothing Then
Set Image1.Picture = img.FileData.Picture
ListView1.Visible = False
End If
End If
End If
BuildTree
'D.A. No longer valid since the Control eliminated for Reference"
WiaDevManager.RegisterEvent wiaEventDeviceConnected
WiaDevManager.RegisterEvent wiaEventDeviceDisconnected
'Original:
'wia.RegisterEvent wiaEventDeviceConnected
'wia.RegisterEvent wiaEventDeviceDisconnected
End Sub
Private Sub ListView4_DblClick()
Dim li As ListItem
Set li = ListView4.SelectedItem
If Not CurrentDevice Is Nothing Then
On Error Resume Next
WiaObj.RegisterEvent li.Text, CurrentDevice.DeviceID
If Err.Number <> 0 Then
MsgBox Err.Description
End If
End If
End Sub
Private Sub Image1_Click()
ListView1.Visible = True
End Sub
Private Sub Form_Resize()
If Me.Width < MinWidth Then Me.Width = MinWidth
If Me.Height < MinHeight Then Me.Height = MinHeight
ListView1.Width = Me.Width - ListView1.Left - RightMargin
ListView1.Height = Me.Height - ListView1.Top - BottomMargin
Image1.Width = ListView1.Width
Image1.Height = ListView1.Height
ListView2.Left = Me.Width - ListView2.Width - RightMargin
VideoPreview1.Left = ListView2.Left
TreeView1.Width = ListView2.Left - TreeView1.Left - MiddleMargin
Command2.Width = TreeView1.Width
End Sub
Private Sub TreeView1_NodeClick(ByVal Node As MSComctlLib.Node)
Dim itm As Item
Dim dev As Device
Dim ThumbnailData As Vector
Dim ThumbnailWidth As Long
Dim ThumbnailHeight As Long
Set ThumbnailData = Nothing
ThumbnailWidth = 0
ThumbnailHeight = 0
If TypeOf Node.Tag Is Item Then
Set itm = Node.Tag
Set CurrentDevice = Nothing
Set CurrentItem = itm
'Set Picture1.Picture = itm.Thumbnail
EnumProperties itm.Properties, ThumbnailData, ThumbnailWidth, ThumbnailHeight
If Not ThumbnailData Is Nothing Then
If ThumbnailWidth <> 0 Then
If ThumbnailHeight <> 0 Then
Set Picture1.Picture = ThumbnailData.Picture(ThumbnailWidth, ThumbnailHeight)
End If
End If
End If
EnumFormats itm.Formats
EnumCommands itm.Commands
ListView2.ZOrder
Picture1.ZOrder
Else
Set dev = Node.Tag
Set CurrentItem = Nothing
Set CurrentDevice = dev
If dev.Type = VideoDeviceType Then
'D.A. changed
'The VideoPreview control from WIA is no longer available when when we call as a Reference
'Set VideoPreview1.Device = dev
MsgBox "Video window does not exist if using wiaaut.dll Reference instead of Control"
End If
EnumProperties dev.Properties, ThumbnailData, ThumbnailWidth, ThumbnailHeight
EnumCommands dev.Commands
EnumEvents dev.Events
ListView4.ZOrder
VideoPreview1.ZOrder
End If
End Sub
Private Sub WiaDevManager_OnEvent(ByVal EventID As String, ByVal DeviceID As String, ByVal ItemID As String)
'D.A. changes
'Note: The WiaDevManager_OnEvent sub will not fire if you load the wiaaut.dll via a Reference and not via a Control
' However, I have left the code intact for future reference
' MsgBox "RECEIVED EVENT!" & vbCrLf & vbCrLf & _
' "EventID = """ & EventID & """" & vbCrLf & _
' "DeviceID = """ & DeviceID & """" & vbCrLf & _
' "ItemID = """ & ItemID & """"
If EventID = wiaEventDeviceConnected Then
BuildTree
ElseIf EventID = wiaEventDeviceDisconnected Then
BuildTree
Else
MsgBox "RECEIVED EVENT!" & vbCrLf & vbCrLf & _
"EventID = """ & EventID & """" & vbCrLf & _
"DeviceID = """ & DeviceID & """" & vbCrLf & _
"ItemID = """ & ItemID & """"
End If
End Sub |