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QueryChangesVirtualDisk

関数

変更追跡で記録された仮想ディスクの変更範囲を照会する。

DLLVirtDisk.dll呼出規約winapi対応OSWindows 10 以降

シグネチャ

// VirtDisk.dll
#include <windows.h>

WIN32_ERROR QueryChangesVirtualDisk(
    HANDLE VirtualDiskHandle,
    LPCWSTR ChangeTrackingId,
    ULONGLONG ByteOffset,
    ULONGLONG ByteLength,
    QUERY_CHANGES_VIRTUAL_DISK_FLAG Flags,
    QUERY_CHANGES_VIRTUAL_DISK_RANGE* Ranges,
    DWORD* RangeCount,
    ULONGLONG* ProcessedLength
);

パラメーター

名前	型	方向	説明
VirtualDiskHandle	HANDLE	in	変更追跡情報を問い合わせる対象の仮想ディスクのハンドル。
ChangeTrackingId	LPCWSTR	in	比較基準となる変更追跡IDを指す広域文字列。このID以降の変更領域を取得する。
ByteOffset	ULONGLONG	in	問い合わせ範囲の開始オフセットをバイト単位で指定するULONGLONG値。
ByteLength	ULONGLONG	in	問い合わせ範囲の長さをバイト単位で指定するULONGLONG値。
Flags	QUERY_CHANGES_VIRTUAL_DISK_FLAG	in	問い合わせ動作を制御するQUERY_CHANGES_VIRTUAL_DISK_FLAGのビットフラグ。通常はNONEを指定する。
Ranges	QUERY_CHANGES_VIRTUAL_DISK_RANGE*	out	変更があった領域を受け取るQUERY_CHANGES_VIRTUAL_DISK_RANGE配列へのポインタ。各要素が変更範囲を表す。
RangeCount	DWORD*	inout	Ranges配列の要素数を入出力するDWORDポインタ。入力で容量、出力で実際の件数を返す。
ProcessedLength	ULONGLONG*	out	実際に処理されたバイト長を返すULONGLONGポインタ。残り範囲の継続問い合わせに用いる。

戻り値の型: WIN32_ERROR

各言語での呼び出し定義

// VirtDisk.dll
#include <windows.h>

WIN32_ERROR QueryChangesVirtualDisk(
    HANDLE VirtualDiskHandle,
    LPCWSTR ChangeTrackingId,
    ULONGLONG ByteOffset,
    ULONGLONG ByteLength,
    QUERY_CHANGES_VIRTUAL_DISK_FLAG Flags,
    QUERY_CHANGES_VIRTUAL_DISK_RANGE* Ranges,
    DWORD* RangeCount,
    ULONGLONG* ProcessedLength
);

[DllImport("VirtDisk.dll", ExactSpelling = true)]
static extern uint QueryChangesVirtualDisk(
    IntPtr VirtualDiskHandle,   // HANDLE
    [MarshalAs(UnmanagedType.LPWStr)] string ChangeTrackingId,   // LPCWSTR
    ulong ByteOffset,   // ULONGLONG
    ulong ByteLength,   // ULONGLONG
    int Flags,   // QUERY_CHANGES_VIRTUAL_DISK_FLAG
    IntPtr Ranges,   // QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
    ref uint RangeCount,   // DWORD* in/out
    out ulong ProcessedLength   // ULONGLONG* out
);

<DllImport("VirtDisk.dll", ExactSpelling:=True)>
Public Shared Function QueryChangesVirtualDisk(
    VirtualDiskHandle As IntPtr,   ' HANDLE
    <MarshalAs(UnmanagedType.LPWStr)> ChangeTrackingId As String,   ' LPCWSTR
    ByteOffset As ULong,   ' ULONGLONG
    ByteLength As ULong,   ' ULONGLONG
    Flags As Integer,   ' QUERY_CHANGES_VIRTUAL_DISK_FLAG
    Ranges As IntPtr,   ' QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
    ByRef RangeCount As UInteger,   ' DWORD* in/out
    <Out> ByRef ProcessedLength As ULong   ' ULONGLONG* out
) As UInteger
End Function

' VirtualDiskHandle : HANDLE
' ChangeTrackingId : LPCWSTR
' ByteOffset : ULONGLONG
' ByteLength : ULONGLONG
' Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG
' Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
' RangeCount : DWORD* in/out
' ProcessedLength : ULONGLONG* out
Declare PtrSafe Function QueryChangesVirtualDisk Lib "virtdisk" ( _
    ByVal VirtualDiskHandle As LongPtr, _
    ByVal ChangeTrackingId As LongPtr, _
    ByVal ByteOffset As LongLong, _
    ByVal ByteLength As LongLong, _
    ByVal Flags As Long, _
    ByVal Ranges As LongPtr, _
    ByRef RangeCount As Long, _
    ByRef ProcessedLength As LongLong) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

QueryChangesVirtualDisk = ctypes.windll.virtdisk.QueryChangesVirtualDisk
QueryChangesVirtualDisk.restype = wintypes.DWORD
QueryChangesVirtualDisk.argtypes = [
    wintypes.HANDLE,  # VirtualDiskHandle : HANDLE
    wintypes.LPCWSTR,  # ChangeTrackingId : LPCWSTR
    ctypes.c_ulonglong,  # ByteOffset : ULONGLONG
    ctypes.c_ulonglong,  # ByteLength : ULONGLONG
    ctypes.c_int,  # Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG
    ctypes.c_void_p,  # Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
    ctypes.POINTER(wintypes.DWORD),  # RangeCount : DWORD* in/out
    ctypes.POINTER(ctypes.c_ulonglong),  # ProcessedLength : ULONGLONG* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('VirtDisk.dll')
QueryChangesVirtualDisk = Fiddle::Function.new(
  lib['QueryChangesVirtualDisk'],
  [
    Fiddle::TYPE_VOIDP,  # VirtualDiskHandle : HANDLE
    Fiddle::TYPE_VOIDP,  # ChangeTrackingId : LPCWSTR
    -Fiddle::TYPE_LONG_LONG,  # ByteOffset : ULONGLONG
    -Fiddle::TYPE_LONG_LONG,  # ByteLength : ULONGLONG
    Fiddle::TYPE_INT,  # Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG
    Fiddle::TYPE_VOIDP,  # Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
    Fiddle::TYPE_VOIDP,  # RangeCount : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # ProcessedLength : ULONGLONG* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "virtdisk")]
extern "system" {
    fn QueryChangesVirtualDisk(
        VirtualDiskHandle: *mut core::ffi::c_void,  // HANDLE
        ChangeTrackingId: *const u16,  // LPCWSTR
        ByteOffset: u64,  // ULONGLONG
        ByteLength: u64,  // ULONGLONG
        Flags: i32,  // QUERY_CHANGES_VIRTUAL_DISK_FLAG
        Ranges: *mut QUERY_CHANGES_VIRTUAL_DISK_RANGE,  // QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
        RangeCount: *mut u32,  // DWORD* in/out
        ProcessedLength: *mut u64  // ULONGLONG* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("VirtDisk.dll")]
public static extern uint QueryChangesVirtualDisk(IntPtr VirtualDiskHandle, [MarshalAs(UnmanagedType.LPWStr)] string ChangeTrackingId, ulong ByteOffset, ulong ByteLength, int Flags, IntPtr Ranges, ref uint RangeCount, out ulong ProcessedLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'VirtDisk_QueryChangesVirtualDisk' -Namespace Win32 -PassThru
# $api::QueryChangesVirtualDisk(VirtualDiskHandle, ChangeTrackingId, ByteOffset, ByteLength, Flags, Ranges, RangeCount, ProcessedLength)

#uselib "VirtDisk.dll"
#func global QueryChangesVirtualDisk "QueryChangesVirtualDisk" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; QueryChangesVirtualDisk VirtualDiskHandle, ChangeTrackingId, ByteOffset, ByteLength, Flags, varptr(Ranges), varptr(RangeCount), varptr(ProcessedLength)   ; 戻り値は stat
; VirtualDiskHandle : HANDLE -> "sptr"
; ChangeTrackingId : LPCWSTR -> "sptr"
; ByteOffset : ULONGLONG -> "sptr"
; ByteLength : ULONGLONG -> "sptr"
; Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG -> "sptr"
; Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out -> "sptr"
; RangeCount : DWORD* in/out -> "sptr"
; ProcessedLength : ULONGLONG* out -> "sptr"
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

出力引数:

#uselib "VirtDisk.dll"
#cfunc global QueryChangesVirtualDisk "QueryChangesVirtualDisk" sptr, wstr, int64, int64, int, var, var, var
; res = QueryChangesVirtualDisk(VirtualDiskHandle, ChangeTrackingId, ByteOffset, ByteLength, Flags, Ranges, RangeCount, ProcessedLength)
; VirtualDiskHandle : HANDLE -> "sptr"
; ChangeTrackingId : LPCWSTR -> "wstr"
; ByteOffset : ULONGLONG -> "int64"
; ByteLength : ULONGLONG -> "int64"
; Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG -> "int"
; Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out -> "var"
; RangeCount : DWORD* in/out -> "var"
; ProcessedLength : ULONGLONG* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。#uselib "VirtDisk.dll"
#cfunc global QueryChangesVirtualDisk "QueryChangesVirtualDisk" sptr, wstr, int64, int64, int, sptr, sptr, sptr
; res = QueryChangesVirtualDisk(VirtualDiskHandle, ChangeTrackingId, ByteOffset, ByteLength, Flags, varptr(Ranges), varptr(RangeCount), varptr(ProcessedLength))
; VirtualDiskHandle : HANDLE -> "sptr"
; ChangeTrackingId : LPCWSTR -> "wstr"
; ByteOffset : ULONGLONG -> "int64"
; ByteLength : ULONGLONG -> "int64"
; Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG -> "int"
; Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out -> "sptr"
; RangeCount : DWORD* in/out -> "sptr"
; ProcessedLength : ULONGLONG* out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。

出力引数:

; WIN32_ERROR QueryChangesVirtualDisk(HANDLE VirtualDiskHandle, LPCWSTR ChangeTrackingId, ULONGLONG ByteOffset, ULONGLONG ByteLength, QUERY_CHANGES_VIRTUAL_DISK_FLAG Flags, QUERY_CHANGES_VIRTUAL_DISK_RANGE* Ranges, DWORD* RangeCount, ULONGLONG* ProcessedLength)
#uselib "VirtDisk.dll"
#cfunc global QueryChangesVirtualDisk "QueryChangesVirtualDisk" intptr, wstr, int64, int64, int, var, var, var
; res = QueryChangesVirtualDisk(VirtualDiskHandle, ChangeTrackingId, ByteOffset, ByteLength, Flags, Ranges, RangeCount, ProcessedLength)
; VirtualDiskHandle : HANDLE -> "intptr"
; ChangeTrackingId : LPCWSTR -> "wstr"
; ByteOffset : ULONGLONG -> "int64"
; ByteLength : ULONGLONG -> "int64"
; Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG -> "int"
; Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out -> "var"
; RangeCount : DWORD* in/out -> "var"
; ProcessedLength : ULONGLONG* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。; WIN32_ERROR QueryChangesVirtualDisk(HANDLE VirtualDiskHandle, LPCWSTR ChangeTrackingId, ULONGLONG ByteOffset, ULONGLONG ByteLength, QUERY_CHANGES_VIRTUAL_DISK_FLAG Flags, QUERY_CHANGES_VIRTUAL_DISK_RANGE* Ranges, DWORD* RangeCount, ULONGLONG* ProcessedLength)
#uselib "VirtDisk.dll"
#cfunc global QueryChangesVirtualDisk "QueryChangesVirtualDisk" intptr, wstr, int64, int64, int, intptr, intptr, intptr
; res = QueryChangesVirtualDisk(VirtualDiskHandle, ChangeTrackingId, ByteOffset, ByteLength, Flags, varptr(Ranges), varptr(RangeCount), varptr(ProcessedLength))
; VirtualDiskHandle : HANDLE -> "intptr"
; ChangeTrackingId : LPCWSTR -> "wstr"
; ByteOffset : ULONGLONG -> "int64"
; ByteLength : ULONGLONG -> "int64"
; Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG -> "int"
; Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out -> "intptr"
; RangeCount : DWORD* in/out -> "intptr"
; ProcessedLength : ULONGLONG* out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	virtdisk = windows.NewLazySystemDLL("VirtDisk.dll")
	procQueryChangesVirtualDisk = virtdisk.NewProc("QueryChangesVirtualDisk")
)

// VirtualDiskHandle (HANDLE), ChangeTrackingId (LPCWSTR), ByteOffset (ULONGLONG), ByteLength (ULONGLONG), Flags (QUERY_CHANGES_VIRTUAL_DISK_FLAG), Ranges (QUERY_CHANGES_VIRTUAL_DISK_RANGE* out), RangeCount (DWORD* in/out), ProcessedLength (ULONGLONG* out)
r1, _, err := procQueryChangesVirtualDisk.Call(
	uintptr(VirtualDiskHandle),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(ChangeTrackingId))),
	uintptr(ByteOffset),
	uintptr(ByteLength),
	uintptr(Flags),
	uintptr(Ranges),
	uintptr(RangeCount),
	uintptr(ProcessedLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function QueryChangesVirtualDisk(
  VirtualDiskHandle: THandle;   // HANDLE
  ChangeTrackingId: PWideChar;   // LPCWSTR
  ByteOffset: UInt64;   // ULONGLONG
  ByteLength: UInt64;   // ULONGLONG
  Flags: Integer;   // QUERY_CHANGES_VIRTUAL_DISK_FLAG
  Ranges: Pointer;   // QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
  RangeCount: Pointer;   // DWORD* in/out
  ProcessedLength: Pointer   // ULONGLONG* out
): DWORD; stdcall;
  external 'VirtDisk.dll' name 'QueryChangesVirtualDisk';

result := DllCall("VirtDisk\QueryChangesVirtualDisk"
    , "Ptr", VirtualDiskHandle   ; HANDLE
    , "WStr", ChangeTrackingId   ; LPCWSTR
    , "Int64", ByteOffset   ; ULONGLONG
    , "Int64", ByteLength   ; ULONGLONG
    , "Int", Flags   ; QUERY_CHANGES_VIRTUAL_DISK_FLAG
    , "Ptr", Ranges   ; QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
    , "Ptr", RangeCount   ; DWORD* in/out
    , "Ptr", ProcessedLength   ; ULONGLONG* out
    , "UInt")   ; return: WIN32_ERROR

●QueryChangesVirtualDisk(VirtualDiskHandle, ChangeTrackingId, ByteOffset, ByteLength, Flags, Ranges, RangeCount, ProcessedLength) = DLL("VirtDisk.dll", "dword QueryChangesVirtualDisk(void*, char*, qword, qword, int, void*, void*, void*)")
# 呼び出し: QueryChangesVirtualDisk(VirtualDiskHandle, ChangeTrackingId, ByteOffset, ByteLength, Flags, Ranges, RangeCount, ProcessedLength)
# VirtualDiskHandle : HANDLE -> "void*"
# ChangeTrackingId : LPCWSTR -> "char*"
# ByteOffset : ULONGLONG -> "qword"
# ByteLength : ULONGLONG -> "qword"
# Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG -> "int"
# Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out -> "void*"
# RangeCount : DWORD* in/out -> "void*"
# ProcessedLength : ULONGLONG* out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。

const std = @import("std");

extern "virtdisk" fn QueryChangesVirtualDisk(
    VirtualDiskHandle: ?*anyopaque, // HANDLE
    ChangeTrackingId: [*c]const u16, // LPCWSTR
    ByteOffset: u64, // ULONGLONG
    ByteLength: u64, // ULONGLONG
    Flags: i32, // QUERY_CHANGES_VIRTUAL_DISK_FLAG
    Ranges: [*c]QUERY_CHANGES_VIRTUAL_DISK_RANGE, // QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
    RangeCount: [*c]u32, // DWORD* in/out
    ProcessedLength: [*c]u64 // ULONGLONG* out
) callconv(std.os.windows.WINAPI) u32;

proc QueryChangesVirtualDisk(
    VirtualDiskHandle: pointer,  # HANDLE
    ChangeTrackingId: WideCString,  # LPCWSTR
    ByteOffset: uint64,  # ULONGLONG
    ByteLength: uint64,  # ULONGLONG
    Flags: int32,  # QUERY_CHANGES_VIRTUAL_DISK_FLAG
    Ranges: ptr QUERY_CHANGES_VIRTUAL_DISK_RANGE,  # QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
    RangeCount: ptr uint32,  # DWORD* in/out
    ProcessedLength: ptr uint64  # ULONGLONG* out
): uint32 {.importc: "QueryChangesVirtualDisk", stdcall, dynlib: "VirtDisk.dll".}

pragma(lib, "virtdisk");
extern(Windows)
uint QueryChangesVirtualDisk(
    void* VirtualDiskHandle,   // HANDLE
    const(wchar)* ChangeTrackingId,   // LPCWSTR
    ulong ByteOffset,   // ULONGLONG
    ulong ByteLength,   // ULONGLONG
    int Flags,   // QUERY_CHANGES_VIRTUAL_DISK_FLAG
    QUERY_CHANGES_VIRTUAL_DISK_RANGE* Ranges,   // QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
    uint* RangeCount,   // DWORD* in/out
    ulong* ProcessedLength   // ULONGLONG* out
);

ccall((:QueryChangesVirtualDisk, "VirtDisk.dll"), stdcall, UInt32,
      (Ptr{Cvoid}, Cwstring, UInt64, UInt64, Int32, Ptr{QUERY_CHANGES_VIRTUAL_DISK_RANGE}, Ptr{UInt32}, Ptr{UInt64}),
      VirtualDiskHandle, ChangeTrackingId, ByteOffset, ByteLength, Flags, Ranges, RangeCount, ProcessedLength)
# VirtualDiskHandle : HANDLE -> Ptr{Cvoid}
# ChangeTrackingId : LPCWSTR -> Cwstring
# ByteOffset : ULONGLONG -> UInt64
# ByteLength : ULONGLONG -> UInt64
# Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG -> Int32
# Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out -> Ptr{QUERY_CHANGES_VIRTUAL_DISK_RANGE}
# RangeCount : DWORD* in/out -> Ptr{UInt32}
# ProcessedLength : ULONGLONG* out -> Ptr{UInt64}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t QueryChangesVirtualDisk(
    void* VirtualDiskHandle,
    const uint16_t* ChangeTrackingId,
    uint64_t ByteOffset,
    uint64_t ByteLength,
    int32_t Flags,
    void* Ranges,
    uint32_t* RangeCount,
    uint64_t* ProcessedLength);
]]
local virtdisk = ffi.load("virtdisk")
-- virtdisk.QueryChangesVirtualDisk(VirtualDiskHandle, ChangeTrackingId, ByteOffset, ByteLength, Flags, Ranges, RangeCount, ProcessedLength)
-- VirtualDiskHandle : HANDLE
-- ChangeTrackingId : LPCWSTR
-- ByteOffset : ULONGLONG
-- ByteLength : ULONGLONG
-- Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG
-- Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
-- RangeCount : DWORD* in/out
-- ProcessedLength : ULONGLONG* out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('VirtDisk.dll');
const QueryChangesVirtualDisk = lib.func('__stdcall', 'QueryChangesVirtualDisk', 'uint32_t', ['void *', 'str16', 'uint64_t', 'uint64_t', 'int32_t', 'void *', 'uint32_t *', 'uint64_t *']);
// QueryChangesVirtualDisk(VirtualDiskHandle, ChangeTrackingId, ByteOffset, ByteLength, Flags, Ranges, RangeCount, ProcessedLength)
// VirtualDiskHandle : HANDLE -> 'void *'
// ChangeTrackingId : LPCWSTR -> 'str16'
// ByteOffset : ULONGLONG -> 'uint64_t'
// ByteLength : ULONGLONG -> 'uint64_t'
// Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG -> 'int32_t'
// Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out -> 'void *'
// RangeCount : DWORD* in/out -> 'uint32_t *'
// ProcessedLength : ULONGLONG* out -> 'uint64_t *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("VirtDisk.dll", {
  QueryChangesVirtualDisk: { parameters: ["pointer", "buffer", "u64", "u64", "i32", "pointer", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.QueryChangesVirtualDisk(VirtualDiskHandle, ChangeTrackingId, ByteOffset, ByteLength, Flags, Ranges, RangeCount, ProcessedLength)
// VirtualDiskHandle : HANDLE -> "pointer"
// ChangeTrackingId : LPCWSTR -> "buffer"
// ByteOffset : ULONGLONG -> "u64"
// ByteLength : ULONGLONG -> "u64"
// Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG -> "i32"
// Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out -> "pointer"
// RangeCount : DWORD* in/out -> "pointer"
// ProcessedLength : ULONGLONG* out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
uint32_t QueryChangesVirtualDisk(
    void* VirtualDiskHandle,
    const uint16_t* ChangeTrackingId,
    uint64_t ByteOffset,
    uint64_t ByteLength,
    int32_t Flags,
    void* Ranges,
    uint32_t* RangeCount,
    uint64_t* ProcessedLength);
C, "VirtDisk.dll");
// $ffi->QueryChangesVirtualDisk(VirtualDiskHandle, ChangeTrackingId, ByteOffset, ByteLength, Flags, Ranges, RangeCount, ProcessedLength);
// VirtualDiskHandle : HANDLE
// ChangeTrackingId : LPCWSTR
// ByteOffset : ULONGLONG
// ByteLength : ULONGLONG
// Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG
// Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
// RangeCount : DWORD* in/out
// ProcessedLength : ULONGLONG* out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Virtdisk extends StdCallLibrary {
    Virtdisk INSTANCE = Native.load("virtdisk", Virtdisk.class);
    int QueryChangesVirtualDisk(
        Pointer VirtualDiskHandle,   // HANDLE
        WString ChangeTrackingId,   // LPCWSTR
        long ByteOffset,   // ULONGLONG
        long ByteLength,   // ULONGLONG
        int Flags,   // QUERY_CHANGES_VIRTUAL_DISK_FLAG
        Pointer Ranges,   // QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
        IntByReference RangeCount,   // DWORD* in/out
        LongByReference ProcessedLength   // ULONGLONG* out
    );
}

@[Link("virtdisk")]
lib LibVirtDisk
  fun QueryChangesVirtualDisk = QueryChangesVirtualDisk(
    VirtualDiskHandle : Void*,   # HANDLE
    ChangeTrackingId : UInt16*,   # LPCWSTR
    ByteOffset : UInt64,   # ULONGLONG
    ByteLength : UInt64,   # ULONGLONG
    Flags : Int32,   # QUERY_CHANGES_VIRTUAL_DISK_FLAG
    Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE*,   # QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
    RangeCount : UInt32*,   # DWORD* in/out
    ProcessedLength : UInt64*   # ULONGLONG* out
  ) : UInt32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef QueryChangesVirtualDiskNative = Uint32 Function(Pointer<Void>, Pointer<Utf16>, Uint64, Uint64, Int32, Pointer<Void>, Pointer<Uint32>, Pointer<Uint64>);
typedef QueryChangesVirtualDiskDart = int Function(Pointer<Void>, Pointer<Utf16>, int, int, int, Pointer<Void>, Pointer<Uint32>, Pointer<Uint64>);
final QueryChangesVirtualDisk = DynamicLibrary.open('VirtDisk.dll')
    .lookupFunction<QueryChangesVirtualDiskNative, QueryChangesVirtualDiskDart>('QueryChangesVirtualDisk');
// VirtualDiskHandle : HANDLE -> Pointer<Void>
// ChangeTrackingId : LPCWSTR -> Pointer<Utf16>
// ByteOffset : ULONGLONG -> Uint64
// ByteLength : ULONGLONG -> Uint64
// Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG -> Int32
// Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out -> Pointer<Void>
// RangeCount : DWORD* in/out -> Pointer<Uint32>
// ProcessedLength : ULONGLONG* out -> Pointer<Uint64>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function QueryChangesVirtualDisk(
  VirtualDiskHandle: THandle;   // HANDLE
  ChangeTrackingId: PWideChar;   // LPCWSTR
  ByteOffset: UInt64;   // ULONGLONG
  ByteLength: UInt64;   // ULONGLONG
  Flags: Integer;   // QUERY_CHANGES_VIRTUAL_DISK_FLAG
  Ranges: Pointer;   // QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
  RangeCount: Pointer;   // DWORD* in/out
  ProcessedLength: Pointer   // ULONGLONG* out
): DWORD; stdcall;
  external 'VirtDisk.dll' name 'QueryChangesVirtualDisk';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "QueryChangesVirtualDisk"
  c_QueryChangesVirtualDisk :: Ptr () -> CWString -> Word64 -> Word64 -> Int32 -> Ptr () -> Ptr Word32 -> Ptr Word64 -> IO Word32
-- VirtualDiskHandle : HANDLE -> Ptr ()
-- ChangeTrackingId : LPCWSTR -> CWString
-- ByteOffset : ULONGLONG -> Word64
-- ByteLength : ULONGLONG -> Word64
-- Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG -> Int32
-- Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out -> Ptr ()
-- RangeCount : DWORD* in/out -> Ptr Word32
-- ProcessedLength : ULONGLONG* out -> Ptr Word64
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let querychangesvirtualdisk =
  foreign "QueryChangesVirtualDisk"
    ((ptr void) @-> (ptr uint16_t) @-> uint64_t @-> uint64_t @-> int32_t @-> (ptr void) @-> (ptr uint32_t) @-> (ptr uint64_t) @-> returning uint32_t)
(* VirtualDiskHandle : HANDLE -> (ptr void) *)
(* ChangeTrackingId : LPCWSTR -> (ptr uint16_t) *)
(* ByteOffset : ULONGLONG -> uint64_t *)
(* ByteLength : ULONGLONG -> uint64_t *)
(* Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG -> int32_t *)
(* Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out -> (ptr void) *)
(* RangeCount : DWORD* in/out -> (ptr uint32_t) *)
(* ProcessedLength : ULONGLONG* out -> (ptr uint64_t) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library virtdisk (t "VirtDisk.dll"))
(cffi:use-foreign-library virtdisk)

(cffi:defcfun ("QueryChangesVirtualDisk" query-changes-virtual-disk :convention :stdcall) :uint32
  (virtual-disk-handle :pointer)   ; HANDLE
  (change-tracking-id (:string :encoding :utf-16le))   ; LPCWSTR
  (byte-offset :uint64)   ; ULONGLONG
  (byte-length :uint64)   ; ULONGLONG
  (flags :int32)   ; QUERY_CHANGES_VIRTUAL_DISK_FLAG
  (ranges :pointer)   ; QUERY_CHANGES_VIRTUAL_DISK_RANGE* out
  (range-count :pointer)   ; DWORD* in/out
  (processed-length :pointer))   ; ULONGLONG* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $QueryChangesVirtualDisk = Win32::API::More->new('VirtDisk',
    'DWORD QueryChangesVirtualDisk(HANDLE VirtualDiskHandle, LPCWSTR ChangeTrackingId, UINT64 ByteOffset, UINT64 ByteLength, int Flags, LPVOID Ranges, LPVOID RangeCount, LPVOID ProcessedLength)');
# my $ret = $QueryChangesVirtualDisk->Call($VirtualDiskHandle, $ChangeTrackingId, $ByteOffset, $ByteLength, $Flags, $Ranges, $RangeCount, $ProcessedLength);
# VirtualDiskHandle : HANDLE -> HANDLE
# ChangeTrackingId : LPCWSTR -> LPCWSTR
# ByteOffset : ULONGLONG -> UINT64
# ByteLength : ULONGLONG -> UINT64
# Flags : QUERY_CHANGES_VIRTUAL_DISK_FLAG -> int
# Ranges : QUERY_CHANGES_VIRTUAL_DISK_RANGE* out -> LPVOID
# RangeCount : DWORD* in/out -> LPVOID
# ProcessedLength : ULONGLONG* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

QueryChangesVirtualDisk

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