关于网络打印机的问题
最近我用VBA设计了一个批打印程序，遇到了一个问题：我使用的是局域网的打印机，其它的设置如打印机选择、打印方向、打印比表等都已经设计好了，并运行正确。但是，我不知道怎样选择网络打印机的纸张。在所有的纸张列表中就只有CAD默认的纸张列表(没有A3和A4)，选择不了网络打印机的纸张列表，程序如下，请高手指点一下，怎样选择网络打印机的纸张。Private Sub cmdCancel_Click()
End
End Sub
Private Sub cmdDelete_Click()
'确认列表框包含列表项
If lstFile.ListCount >= 1 Then
'如果没有选中的内容，用上一次的列表项。
If lstFile.ListIndex = -1 Then
MsgBox "请选择列表中的图形名称！"
Exit Sub
End If
lstFile.RemoveItem (lstFile.ListIndex)
End If
End Sub
Private Sub cmdOk_Click()
Dim i As Integer
Dim ii As Integer
Dim zz As Integer
Dim drn As String
Dim drn1 As String
If lstFile.ListCount = 0 Then
MsgBox "请添加所要操作的图形！"
Exit Sub
End If
If ComboBox1.Text = "" Then
MsgBox "请添加所要操作的图形！"
End If
Select Case (ComboBox1.Text)
Case Is = "HP-0"
AAPRINTER = ""
Case Is = "HP-1"
AAPRINTER = ""
Case Is = "HP-3"
AAPRINTER = ""
Case Is = "HP-4"
AAPRINTER = ""
End Select
drn2 = TextBox2.Text
zz = 1
For ii = 1 To Len(drn2)
ii = InStr(zz, drn2, Chr(92))
If ii = 0 Then Exit For
zz = ii + 1
Next ii
drn = Mid(drn2, zz)
frmMain.hide
For i = 0 To lstFile.ListCount - 1
drn1 = lstFile.List(i)
Application.Documents.Open drn1
ThisDrawing.ActiveLayout.RefreshPlotDeviceInfo
Dim currentPlot As AcadPlot
Set currentPlot = ThisDrawing.Plot
ThisDrawing.ActiveLayout.PlotType = acExtents
ThisDrawing.ActiveLayout.StandardScale = acScaleToFit
ThisDrawing.ActiveLayout.StyleSheet = drn
ThisDrawing.ActiveLayout.PlotRotation = ac90degrees
ThisDrawing.ActiveLayout.CanonicalMediaName = ComboBox2.Text
currentPlot.PlotToDevice AAPRINTER
Application.ActiveDocument.Close False, drn1
Next i
End Sub
Private Sub cmdOpen_Click()
On Error GoTo errHandle
Dim i As Integer
Dim Y As Integer
Dim z As Integer
Dim FileNames() As String
With comDlg
.CancelError = True
.MaxFileSize = 32767
.Flags = cdlOFNHideReadOnly Or cdlOFNAllowMultiselect Or cdlOFNExplorer Or cdlOFNNoDereferenceLinks
.DialogTitle = "选择图形文件"
.filter = "图形文件(*.dwg)|*.dwg|所有文件(*.*)|*.*"
.FileName = ""
.ShowOpen
End With
comDlg.FileName = comDlg.FileName & Chr(0)'这些文件名是用空字符Chr(0)分隔符，而不是空格分隔符隔开
z = 1
For i = 1 To Len(comDlg.FileName)
'InStr函数，返回 Variant (Long)，指定一字符串在另一字符串中最先出现的位置。
'语法 InStr(起点位置, string1, string2)
i = InStr(z, comDlg.FileName, Chr(0))
If i = 0 Then Exit For
ReDim Preserve FileNames(Y)
'Mid函数，返回 Variant (String)，其中包含字符串中指定数量的字符。
'语法 Mid(string, start[, length])
FileNames(Y) = Mid(comDlg.FileName, z, i - z)
z = i + 1
Y = Y + 1
Next i
'向列表框中添加对象
Dim count As Integer
count = lstFile.ListCount
If Y = 1 Then
lstFile.AddItem FileNames(count), 0
Else
For i = 1 To Y - 1
FileNames(i) = FileNames(0) & "\" & FileNames(i)
lstFile.AddItem FileNames(i), i - 1 + count
Next i
End If
errHandle:
End Sub
Private Sub CommandButton2_Click()
On Error GoTo errHandle
Dim i As Integer
Dim Y As Integer
Dim z As Integer
Dim FileNames() As String
With comDlg
.CancelError = True
.MaxFileSize = 32767
.Flags = cdlOFNHideReadOnly Or cdlOFNAllowMultiselect Or cdlOFNExplorer Or cdlOFNNoDereferenceLinks
.DialogTitle = "选择CTB文件"
.filter = "数据文件(*.ctb)|*.ctb|所有文件(*.*)|*.*"
.FileName = ""
.ShowOpen
End With
TextBox2.Text = comDlg.FileName
errHandle:
End Sub
Private Sub UserForm_Initialize()
lstFile.Clear
ComboBox1.AddItem ("HP-0")
ComboBox1.AddItem ("HP-1")
ComboBox1.AddItem ("HP-3")
ComboBox1.AddItem ("HP-4")
ComboBox2.AddItem ("A3")
ComboBox2.AddItem ("A4")
End Sub
**** Hidden Message *****
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