'================================================================
'= プリンタの速度を取得
'=    (DC_PRINTRATE.bas)
'================================================================
#include "Windows.bi"

#define PRINTER_ENUM_DEFAULT &H1        'デフォルトのプリンタに関する情報を列挙
#define PRINTER_ENUM_LOCAL &H2          'Nameの設定を無視して、ローカルプリンタを列挙
#define PRINTER_ENUM_NAME &H8           'Nameで指定されたプリンタを列挙
#define PRINTER_ENUM_SHARED &H20        '共有属性を持つプリンタを列挙
#define MAX_DEVICENAME 64               '
#define DC_PRINTRATE 26                 '速度を取得することを示す定数
#define DC_PRINTRATEUNIT 27             '速度の単位を取得することを示す定数
#define PRINTRATEUNIT_PPM 1             'PPM単位を示す定数
#define PRINTRATEUNIT_CPS 2             'CPS単位を示す定数
#define PRINTRATEUNIT_LPM 3             'LPM単位を示す定数
#define PRINTRATEUNIT_IPM 4             'IPM単位を示す定数

Type PRINTER_INFO_5
    pPrinterName As Long
    pPortName    As Long
    Attributes   As Long
    DeviceNotSelectedTimeOut As Long
    TransmissionRetryTimeOut As Long
End Type

' プリンタデバイスドライバの能力を取得
Declare Function Api_DeviceCapabilities& Lib "winspool.drv" Alias "DeviceCapabilitiesA" (ByVal lpDeviceName$, ByVal lpPort$, ByVal iIndex&, lpOutput As Any, lpDevMode As Any)

' ある位置から別の位置にメモリブロックを移動する関数の宣言
Declare Sub CopyMemory Lib "Kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length&)

' 使用可能なプリンタ・プリントサーバーなどを列挙する
Declare Function Api_EnumPrinters& Lib "winspool.drv" Alias "EnumPrintersA" (ByVal Flags&, ByVal Name$, ByVal Level&, pPrinterEnum As Any, ByVal cbBuf&, pcbNeeded&, pcReturned&)

Var Shared Combo1 As Object
Var Shared Text1 As Object
Var Shared Button1 As Object

Combo1.Attach GetDlgItem("Combo1") : Combo1.SetFontSize 14
Text1.Attach GetDlgItem("Text1") : Text1.SetFontSize 14
Button1.Attach GetDlgItem("Button1") : Button1.SetFontSize 14

Var Shared PrinterName As String

'================================================================
'=
'================================================================
Declare Sub MainForm_Start edecl ()
Sub MainForm_Start()
    Var PrintServer As String
    Var Needed As Long
    Var Returned As Long
    Var Level As Long
    Var CT As Long
    Var Ret As Long

    'ローカルプリンタから検索
    PrintServer = ""

    'PRINTER_INFO_5構造体を受け取る
    Level = 5

    'バッファに必要なバイト数を調べる
    Ret = Api_EnumPrinters(PRINTER_ENUM_NAME, PrintServer, Level, Chr$(0), 0, Needed, Returned)
    If Needed = 0 Then End

    '全プリンタ情報を得る
    Var Buffer(Needed - 1) As byte
    Ret = Api_EnumPrinters(PRINTER_ENUM_NAME, PrintServer, Level, Buffer(0), Needed, Needed, Returned)

    '構造体リストの準備
    Var PI_5(Returned - 1) As PRINTER_INFO_5

    For CT = 0 To Returned - 1

        'バッファから構造体1つ分を抜き取る
        CopyMemory PI_5(CT), Buffer(CT * Len(PI_5(CT))), Len(PI_5(CT))

        'プリンタ名を得る
        PrinterName = String$(MAX_DEVICENAME, Chr$(0))
        CopyMemory PrinterName, ByVal PI_5(CT).pPrinterName, Len(PrinterName)
        PrinterName = KLeft$(PrinterName, KInStr(1, PrinterName, Chr$(0)) - 1)

        Combo1.AddString PrinterName
    Next
End Sub

'================================================================
'=
'================================================================
Declare Sub Button1_on edecl ()
Sub Button1_on()
    Var DeviceCapability As Long
    Var PortName As String
    Var PrintRate As Long
    Var PrintRateUnit As Long

    'デバイス名
    PrinterName = Combo1.GetText(Combo1.GetCursel)

    '問い合わせる能力を指定
    DeviceCapability = DC_PRINTRATE

    '速度を取得
    PrintRate = Api_DeviceCapabilities(PrinterName, PortName, DeviceCapability, ByVal 0, ByVal 0)

    '問い合わせる能力を指定
    DeviceCapability = DC_PRINTRATEUNIT

    '速度の単位を取得
    PrintRateUnit = Api_DeviceCapabilities(PrinterName, PortName, DeviceCapability, ByVal 0, ByVal 0)

    '取得できたときは
    If PrintRate > 0 Then

        '速度の単位で分岐
        Select Case PrintRateUnit
            'PPMのときは
            Case PRINTRATEUNIT_PPM
                 Text1.SetWindowText Str$(PrintRate) & "ppm"

            'CPSのときは
            Case PRINTRATEUNIT_CPS
                 Text1.SetWindowText Str$(PrintRate) & "cps"

            'LPMのときは
            Case PRINTRATEUNIT_LPM
                 Text1.SetWindowText Str$(PrintRate) & "lpm"

            'IPMのときは
            Case PRINTRATEUNIT_IPM
                 Text1.SetWindowText Str$(PrintRate) & "ipm"

            Case Else
                 Text1.SetWindowText Str$(PrintRate) & "(単位不明)"
            End Select

    '取得できないとき
    Else
         Text1.SetWindowText "取得できません！"
    End If
End Sub

'================================================================
'=
'================================================================
While 1
    WaitEvent
Wend
Stop
End