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Imports System.Runtime.InteropServices
Public Class Form1
'Public Const DMPAPER_A4 = 9
Public Const DC_PAPERS As Integer = 2
Public Const DC_PAPERNAMES As Integer = 16
Public Const STANDARD_RIGHTS_REQUIRED As Integer = &HF0000
Public Const PRINTER_ACCESS_ADMINISTER As Integer = &H4
Public Const PRINTER_ACCESS_USE As Integer = &H8
Public Const PRINTER_ALL_ACCESS As Integer = (STANDARD_RIGHTS_REQUIRED Or PRINTER_ACCESS_ADMINISTER Or PRINTER_ACCESS_USE)
<DllImport("winspool.drv", CharSet:=CharSet.Auto)> _
Private Shared Function OpenPrinter( _
ByVal pPrinterName As String, _
ByRef hPrinter As IntPtr, _
ByRef pDefault As PRINTER_DEFAULTS) As Boolean
End Function
<DllImport("winspool.drv", CharSet:=CharSet.Auto)> _
Private Shared Function GetPrinter( _
ByVal hPrinter As IntPtr, _
ByVal dwLevel As Integer, _
ByVal pPrinter As IntPtr, _
ByVal cbBuf As Integer, _
ByRef pcbNeeded As Integer) As Boolean
End Function
<DllImport("winspool.drv", CharSet:=CharSet.Auto)> _
Private Shared Function SetPrinter( _
ByVal hPrinter As IntPtr, _
ByVal dwLevel As Integer, _
ByVal pPrinter As IntPtr, _
ByVal Command As Integer) As Boolean
End Function
<DllImport("winspool.drv", CharSet:=CharSet.Auto)> _
Private Shared Function ClosePrinter( _
ByVal hPrinter As IntPtr) As Boolean
End Function
Declare Function DeviceCapabilities Lib "winspool.drv" Alias "DeviceCapabilitiesA" ( _
ByVal pDevice As String, _
ByVal pPort As String, _
ByVal fwCapability As Short, _
ByVal pOutput() As Short, _
ByVal pDevMode As IntPtr) As Integer
Declare Function DeviceCapabilities Lib "winspool.drv" Alias "DeviceCapabilitiesA" ( _
ByVal pDevice As String, _
ByVal pPort As String, _
ByVal fwCapability As Short, _
ByVal pOutput As String, _
ByVal pDevMode As IntPtr) As Integer
Friend Structure PRINTER_DEFAULTS
Public pDatatype As IntPtr
Public pDevMode As IntPtr
Public DesiredAccess As Integer
End Structure
<Serializable(), StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Auto)> _
Friend Structure PRINTER_INFO_2
Public pServerName As String
Public pPrinterName As String
Public pShareName As String
Public pPortName As String
Public pDriverName As String
Public pComment As String
Public pLocation As String
Public pDevMode As IntPtr
Public pSepFile As String
Public pPrintProcessor As String
Public pDatatype As String
Public pParameters As String
Public pSecurityDescriptor As IntPtr
Public Attributes As System.UInt32
Public Priority As System.UInt32
Public DefaultPriority As System.UInt32
Public StartTime As System.UInt32
Public UntilTime As System.UInt32
Public Status As System.UInt32
Public cJobs As System.UInt32
Public AveragePPM As System.UInt32
End Structure
<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Auto)> _
Friend Structure DevMode
<VBFixedString(32), MarshalAs(UnmanagedType.ByValTStr, SizeConst:=32)> _
Public dmDeviceName As String
Public dmSpecVersion As Short
Public dmDriverVersion As Short
Public dmSize As Short
Public dmDriverExtra As Short
Public dmFields As Integer
Public dmOrientation As Short
Public dmPaperSize As Short
Public dmPaperLength As Short
Public dmPaperWidth As Short
Public dmScale As Short
Public dmCopies As Short
Public dmDefaultSource As Short
Public dmPrintQuality As Short
Public dmColor As Short
Public dmDuplex As Short
Public dmYResolution As Short
Public dmTTOption As Short
Public dmCollate As Short
<VBFixedString(32), MarshalAs(UnmanagedType.ByValTStr, SizeConst:=32)> _
Public dmFormName As String
Public dmUnusedPadding As Short
Public dmBitsPerPel As Short
Public dmPelsWidth As Integer
Public dmPelsHeight As Integer
Public dmDisplayFlags As Integer
Public dmDisplayFrequency As Integer
End Structure
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Try
' バッファサイズを取り出す。
Dim nameCount As Integer
nameCount = DeviceCapabilities("TEC B-858-R", String.Empty, DC_PAPERNAMES, vbNullString, IntPtr.Zero)
' 用紙名を取り出す。
Dim paperNames As String = New String(" "c, nameCount * 64)
Dim paperIndex As Integer = 0
Dim hEncoding As System.Text.Encoding = System.Text.Encoding.GetEncoding("Shift-JIS")
Dim paperName As String
DeviceCapabilities("TEC B-858-R", String.Empty, DC_PAPERNAMES, paperNames, IntPtr.Zero)
For i As Integer = 0 To nameCount - 1
paperName = hEncoding.GetString(hEncoding.GetBytes(paperNames), i * 64, 64)
If paperName.Trim.CompareTo("USER") = 0 Then
paperIndex = i
Exit For
End If
Next
' バッファサイズを取り出す。
Dim numberCount As Integer
numberCount = DeviceCapabilities("TEC B-858-R", String.Empty, DC_PAPERS, 0, IntPtr.Zero)
' 用紙番号を取り出す。
Dim paperNumbers(numberCount - 1) As Short
DeviceCapabilities("TEC B-858-R", String.Empty, DC_PAPERS, paperNumbers, IntPtr.Zero)
' アクセス権を設定する。
Dim pDefault As New PRINTER_DEFAULTS
With pDefault
.DesiredAccess = PRINTER_ALL_ACCESS
End With
' プリンターを開く。
Dim hPrinter As IntPtr
Dim returnValue As Boolean
returnValue = OpenPrinter("TEC B-858-R", _
hPrinter, pDefault)
Debug.Print("OpenPrinter:" & returnValue)
' バッファサイズを取り出す。
Dim byteNeeded As Integer
returnValue = GetPrinter(hPrinter, _
2, IntPtr.Zero, 0, byteNeeded)
' メモリの割当て。
Dim pPrinter As IntPtr
pPrinter = Marshal.AllocHGlobal(byteNeeded)
' プリンター情報を読み取りする。
returnValue = GetPrinter(hPrinter, _
2, pPrinter, byteNeeded, byteNeeded)
Debug.Print("GetPrinter:" & returnValue)
' 構造体にメモリのデータをコピーする。
Dim infoPrinter As PRINTER_INFO_2
Dim modeDev As DevMode
infoPrinter = CType(Marshal.PtrToStructure(pPrinter, GetType(PRINTER_INFO_2)), PRINTER_INFO_2)
modeDev = CType(Marshal.PtrToStructure(infoPrinter.pDevMode, GetType(DevMode)), DevMode)
' 用紙サイズを変更する。
modeDev.dmPaperSize = paperNumbers(paperIndex)
' メモリに構造体のデータをコピー する。
Marshal.StructureToPtr(modeDev, infoPrinter.pDevMode, True)
Marshal.StructureToPtr(infoPrinter, pPrinter, True)
' プリンター情報を書き込みする。
returnValue = SetPrinter(hPrinter, _
2, pPrinter, 0)
Debug.Print("SetPrinter:" & returnValue)
' プリンターを閉じる。
returnValue = ClosePrinter(hPrinter)
Debug.Print("ClosePrinter:" & returnValue)
' メモリを開放する。
Marshal.FreeHGlobal(pPrinter)
Exit Sub
Catch ex As Exception
Debug.Print(ex.ToString)
End Try
End Sub
End Class
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