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DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT
構造体サイズ=各フィールドのバイト数(x64/x86 で異なる場合は x64/x86 と併記)。x64/x86 列=フィールドのバイトオフセット(HSPで dupptr / lpoke / wpoke 等に使用)。
フィールド
| フィールド | 型 | サイズ | x64 | x86 | 説明 |
|---|---|---|---|---|---|
| header | DVD_DISC_CONTROL_BLOCK_HEADER | 48/40 | +0 | +0 | DCBの共通ヘッダを保持するDVD_DISC_CONTROL_BLOCK_HEADER。 |
| UpdateCount | BYTE | 4 | +48 | +40 | 更新回数を示す1バイト値。 |
| WriteProtectActions | _WriteProtectActions_e__Union | 8/4 | +56 | +44 | 書き込み保護に関する許可/禁止操作を示す無名共用体。 |
| Reserved0 | BYTE | 16 | +64 | +48 | 予約領域。将来の拡張用で通常は0。 |
| UpdatePassword | BYTE | 32 | +80 | +64 | 更新に必要なパスワードを保持するバイト配列。 |
| Reserved1 | BYTE | 32672 | +112 | +96 | 予約領域。将来の拡張用で通常は0。 |
共用体: _WriteProtectActions_e__Union x64 8B / x86 4B
| フィールド | 型 | サイズ | x64 | x86 |
|---|---|---|---|---|
| Anonymous | _Anonymous_e__Struct | 8/4 | +0 | +0 |
| AsByte | BYTE | 4 | +0 | +0 |
各言語での定義
#include <windows.h>
// DVD_DISC_CONTROL_BLOCK_HEADER (x64 48 / x86 40 バイト)
typedef struct DVD_DISC_CONTROL_BLOCK_HEADER {
BYTE ContentDescriptor[4];
_ProhibitedActions_e__Union ProhibitedActions;
BYTE VendorId[32];
} DVD_DISC_CONTROL_BLOCK_HEADER;
// DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT (x64 32784 / x86 32768 バイト)
typedef struct DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT {
DVD_DISC_CONTROL_BLOCK_HEADER header;
BYTE UpdateCount[4];
_WriteProtectActions_e__Union WriteProtectActions;
BYTE Reserved0[16];
BYTE UpdatePassword[32];
BYTE Reserved1[32672];
} DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT;using System;
using System.Runtime.InteropServices;
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct DVD_DISC_CONTROL_BLOCK_HEADER
{
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public byte[] ContentDescriptor;
public _ProhibitedActions_e__Union ProhibitedActions;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] VendorId;
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT
{
public DVD_DISC_CONTROL_BLOCK_HEADER header;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public byte[] UpdateCount;
public _WriteProtectActions_e__Union WriteProtectActions;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public byte[] Reserved0;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] UpdatePassword;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32672)] public byte[] Reserved1;
}Imports System.Runtime.InteropServices
<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure DVD_DISC_CONTROL_BLOCK_HEADER
<MarshalAs(UnmanagedType.ByValArray, SizeConst:=4)> Public ContentDescriptor() As Byte
Public ProhibitedActions As _ProhibitedActions_e__Union
<MarshalAs(UnmanagedType.ByValArray, SizeConst:=32)> Public VendorId() As Byte
End Structure
<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT
Public header As DVD_DISC_CONTROL_BLOCK_HEADER
<MarshalAs(UnmanagedType.ByValArray, SizeConst:=4)> Public UpdateCount() As Byte
Public WriteProtectActions As _WriteProtectActions_e__Union
<MarshalAs(UnmanagedType.ByValArray, SizeConst:=16)> Public Reserved0() As Byte
<MarshalAs(UnmanagedType.ByValArray, SizeConst:=32)> Public UpdatePassword() As Byte
<MarshalAs(UnmanagedType.ByValArray, SizeConst:=32672)> Public Reserved1() As Byte
End Structureimport ctypes
from ctypes import wintypes
class DVD_DISC_CONTROL_BLOCK_HEADER(ctypes.Structure):
_fields_ = [
("ContentDescriptor", ctypes.c_ubyte * 4),
("ProhibitedActions", _ProhibitedActions_e__Union),
("VendorId", ctypes.c_ubyte * 32),
]
class DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT(ctypes.Structure):
_fields_ = [
("header", DVD_DISC_CONTROL_BLOCK_HEADER),
("UpdateCount", ctypes.c_ubyte * 4),
("WriteProtectActions", _WriteProtectActions_e__Union),
("Reserved0", ctypes.c_ubyte * 16),
("UpdatePassword", ctypes.c_ubyte * 32),
("Reserved1", ctypes.c_ubyte * 32672),
]#[repr(C)]
pub struct DVD_DISC_CONTROL_BLOCK_HEADER {
pub ContentDescriptor: [u8; 4],
pub ProhibitedActions: _ProhibitedActions_e__Union,
pub VendorId: [u8; 32],
}
#[repr(C)]
pub struct DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT {
pub header: DVD_DISC_CONTROL_BLOCK_HEADER,
pub UpdateCount: [u8; 4],
pub WriteProtectActions: _WriteProtectActions_e__Union,
pub Reserved0: [u8; 16],
pub UpdatePassword: [u8; 32],
pub Reserved1: [u8; 32672],
}import "golang.org/x/sys/windows"
type DVD_DISC_CONTROL_BLOCK_HEADER struct {
ContentDescriptor [4]byte
ProhibitedActions _ProhibitedActions_e__Union
VendorId [32]byte
}
type DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT struct {
header DVD_DISC_CONTROL_BLOCK_HEADER
UpdateCount [4]byte
WriteProtectActions _WriteProtectActions_e__Union
Reserved0 [16]byte
UpdatePassword [32]byte
Reserved1 [32672]byte
}type
DVD_DISC_CONTROL_BLOCK_HEADER = record
ContentDescriptor: array[0..3] of Byte;
ProhibitedActions: _ProhibitedActions_e__Union;
VendorId: array[0..31] of Byte;
end;
DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT = record
header: DVD_DISC_CONTROL_BLOCK_HEADER;
UpdateCount: array[0..3] of Byte;
WriteProtectActions: _WriteProtectActions_e__Union;
Reserved0: array[0..15] of Byte;
UpdatePassword: array[0..31] of Byte;
Reserved1: array[0..32671] of Byte;
end;const DVD_DISC_CONTROL_BLOCK_HEADER = extern struct {
ContentDescriptor: [4]u8,
ProhibitedActions: _ProhibitedActions_e__Union,
VendorId: [32]u8,
};
const DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT = extern struct {
header: DVD_DISC_CONTROL_BLOCK_HEADER,
UpdateCount: [4]u8,
WriteProtectActions: _WriteProtectActions_e__Union,
Reserved0: [16]u8,
UpdatePassword: [32]u8,
Reserved1: [32672]u8,
};type
DVD_DISC_CONTROL_BLOCK_HEADER {.bycopy.} = object
ContentDescriptor: array[4, uint8]
ProhibitedActions: _ProhibitedActions_e__Union
VendorId: array[32, uint8]
DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT {.bycopy.} = object
header: DVD_DISC_CONTROL_BLOCK_HEADER
UpdateCount: array[4, uint8]
WriteProtectActions: _WriteProtectActions_e__Union
Reserved0: array[16, uint8]
UpdatePassword: array[32, uint8]
Reserved1: array[32672, uint8]struct DVD_DISC_CONTROL_BLOCK_HEADER
{
ubyte[4] ContentDescriptor;
_ProhibitedActions_e__Union ProhibitedActions;
ubyte[32] VendorId;
}
struct DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT
{
DVD_DISC_CONTROL_BLOCK_HEADER header;
ubyte[4] UpdateCount;
_WriteProtectActions_e__Union WriteProtectActions;
ubyte[16] Reserved0;
ubyte[32] UpdatePassword;
ubyte[32672] Reserved1;
}HSP用 定義
HSP3.7/3.8 は構造体機能が無いため4byte整数配列(dim)+peek/poke で操作(32/64bitでサイズ・位置が異なる場合はタブで分割)。IronHSP は NSTRUCT(#defstruct/stdim/->)で32/64bit共通。
; HSP3.7/3.8 は構造体機能が無いため、4byte整数の配列変数で操作します。(x86 レイアウト)
; DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT サイズ: 32768 バイト(x86)
dim st, 8192 ; 4byte整数×8192(構造体サイズ 32768 / 4 切り上げ)
; header : DVD_DISC_CONTROL_BLOCK_HEADER (+0, 40byte) varptr(st)+0 を基点に操作(40byte:入れ子/配列)
; UpdateCount : BYTE (+40, 4byte) varptr(st)+40 を基点に操作(4byte:入れ子/配列)
; WriteProtectActions : _WriteProtectActions_e__Union (+44, 4byte) varptr(st)+44 を基点に操作(4byte:入れ子/配列)
; Reserved0 : BYTE (+48, 16byte) varptr(st)+48 を基点に操作(16byte:入れ子/配列)
; UpdatePassword : BYTE (+64, 32byte) varptr(st)+64 を基点に操作(32byte:入れ子/配列)
; Reserved1 : BYTE (+96, 32672byte) varptr(st)+96 を基点に操作(32672byte:入れ子/配列)
; ※4byte境界の整数は添字 st.N(N=オフセット/4)で読み書き可。それ以外は peek/poke 系を使用。; HSP3.7/3.8 は構造体機能が無いため、4byte整数の配列変数で操作します。(x64 レイアウト)
; DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT サイズ: 32784 バイト(x64)
dim st, 8196 ; 4byte整数×8196(構造体サイズ 32784 / 4 切り上げ)
; header : DVD_DISC_CONTROL_BLOCK_HEADER (+0, 48byte) varptr(st)+0 を基点に操作(48byte:入れ子/配列)
; UpdateCount : BYTE (+48, 4byte) varptr(st)+48 を基点に操作(4byte:入れ子/配列)
; WriteProtectActions : _WriteProtectActions_e__Union (+56, 8byte) varptr(st)+56 を基点に操作(8byte:入れ子/配列)
; Reserved0 : BYTE (+64, 16byte) varptr(st)+64 を基点に操作(16byte:入れ子/配列)
; UpdatePassword : BYTE (+80, 32byte) varptr(st)+80 を基点に操作(32byte:入れ子/配列)
; Reserved1 : BYTE (+112, 32672byte) varptr(st)+112 を基点に操作(32672byte:入れ子/配列)
; ※4byte境界の整数は添字 st.N(N=オフセット/4)で読み書き可。それ以外は peek/poke 系を使用。; IronHSP は NSTRUCT(構造体)をサポート。32bit/64bit どちらでも同じコードで動作します。
; ※GUID・入れ子構造体はデフォルト型でないため、依存する #defstruct を先に定義(下記に同梱)。
#defstruct global DVD_DISC_CONTROL_BLOCK_HEADER
#field byte ContentDescriptor 4
#field byte ProhibitedActions 8
#field byte VendorId 32
#endstruct
#defstruct global DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT
#field DVD_DISC_CONTROL_BLOCK_HEADER header
#field byte UpdateCount 4
#field byte WriteProtectActions 8
#field byte Reserved0 16
#field byte UpdatePassword 32
#field byte Reserved1 32672
#endstruct
stdim st, DVD_DISC_CONTROL_BLOCK_WRITE_INHIBIT ; NSTRUCT 変数を確保
; ※union フィールドは byte 列で確保(NSTRUCT は union 非対応)。必要に応じ手動でアクセス。