CompactVirtualDisk

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

WIN32_ERROR CompactVirtualDisk(
    HANDLE VirtualDiskHandle,
    COMPACT_VIRTUAL_DISK_FLAG Flags,
    COMPACT_VIRTUAL_DISK_PARAMETERS* Parameters,   // optional
    OVERLAPPED* Overlapped   // optional
);

<DllImport("VirtDisk.dll", ExactSpelling:=True)>
Public Shared Function CompactVirtualDisk(
    VirtualDiskHandle As IntPtr,   ' HANDLE
    Flags As Integer,   ' COMPACT_VIRTUAL_DISK_FLAG
    Parameters As IntPtr,   ' COMPACT_VIRTUAL_DISK_PARAMETERS* optional
    Overlapped As IntPtr   ' OVERLAPPED* optional
) As UInteger
End Function

' VirtualDiskHandle : HANDLE
' Flags : COMPACT_VIRTUAL_DISK_FLAG
' Parameters : COMPACT_VIRTUAL_DISK_PARAMETERS* optional
' Overlapped : OVERLAPPED* optional
Declare PtrSafe Function CompactVirtualDisk Lib "virtdisk" ( _
    ByVal VirtualDiskHandle As LongPtr, _
    ByVal Flags As Long, _
    ByVal Parameters As LongPtr, _
    ByVal Overlapped As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CompactVirtualDisk = ctypes.windll.virtdisk.CompactVirtualDisk
CompactVirtualDisk.restype = wintypes.DWORD
CompactVirtualDisk.argtypes = [
    wintypes.HANDLE,  # VirtualDiskHandle : HANDLE
    ctypes.c_int,  # Flags : COMPACT_VIRTUAL_DISK_FLAG
    ctypes.c_void_p,  # Parameters : COMPACT_VIRTUAL_DISK_PARAMETERS* optional
    ctypes.c_void_p,  # Overlapped : OVERLAPPED* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('VirtDisk.dll')
CompactVirtualDisk = Fiddle::Function.new(
  lib['CompactVirtualDisk'],
  [
    Fiddle::TYPE_VOIDP,  # VirtualDiskHandle : HANDLE
    Fiddle::TYPE_INT,  # Flags : COMPACT_VIRTUAL_DISK_FLAG
    Fiddle::TYPE_VOIDP,  # Parameters : COMPACT_VIRTUAL_DISK_PARAMETERS* optional
    Fiddle::TYPE_VOIDP,  # Overlapped : OVERLAPPED* optional
  ],
  -Fiddle::TYPE_INT)

#[link(name = "virtdisk")]
extern "system" {
    fn CompactVirtualDisk(
        VirtualDiskHandle: *mut core::ffi::c_void,  // HANDLE
        Flags: i32,  // COMPACT_VIRTUAL_DISK_FLAG
        Parameters: *mut COMPACT_VIRTUAL_DISK_PARAMETERS,  // COMPACT_VIRTUAL_DISK_PARAMETERS* optional
        Overlapped: *mut OVERLAPPED  // OVERLAPPED* optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("VirtDisk.dll")]
public static extern uint CompactVirtualDisk(IntPtr VirtualDiskHandle, int Flags, IntPtr Parameters, IntPtr Overlapped);
"@
$api = Add-Type -MemberDefinition $sig -Name 'VirtDisk_CompactVirtualDisk' -Namespace Win32 -PassThru
# $api::CompactVirtualDisk(VirtualDiskHandle, Flags, Parameters, Overlapped)

#uselib "VirtDisk.dll"
#func global CompactVirtualDisk "CompactVirtualDisk" sptr, sptr, sptr, sptr
; CompactVirtualDisk VirtualDiskHandle, Flags, varptr(Parameters), varptr(Overlapped)   ; 戻り値は stat
; VirtualDiskHandle : HANDLE -> "sptr"
; Flags : COMPACT_VIRTUAL_DISK_FLAG -> "sptr"
; Parameters : COMPACT_VIRTUAL_DISK_PARAMETERS* optional -> "sptr"
; Overlapped : OVERLAPPED* optional -> "sptr"
; ※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。

#uselib "VirtDisk.dll"
#cfunc global CompactVirtualDisk "CompactVirtualDisk" sptr, int, var, var
; res = CompactVirtualDisk(VirtualDiskHandle, Flags, Parameters, Overlapped)
; VirtualDiskHandle : HANDLE -> "sptr"
; Flags : COMPACT_VIRTUAL_DISK_FLAG -> "int"
; Parameters : COMPACT_VIRTUAL_DISK_PARAMETERS* optional -> "var"
; Overlapped : OVERLAPPED* optional -> "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 CompactVirtualDisk(HANDLE VirtualDiskHandle, COMPACT_VIRTUAL_DISK_FLAG Flags, COMPACT_VIRTUAL_DISK_PARAMETERS* Parameters, OVERLAPPED* Overlapped)
#uselib "VirtDisk.dll"
#cfunc global CompactVirtualDisk "CompactVirtualDisk" intptr, int, var, var
; res = CompactVirtualDisk(VirtualDiskHandle, Flags, Parameters, Overlapped)
; VirtualDiskHandle : HANDLE -> "intptr"
; Flags : COMPACT_VIRTUAL_DISK_FLAG -> "int"
; Parameters : COMPACT_VIRTUAL_DISK_PARAMETERS* optional -> "var"
; Overlapped : OVERLAPPED* optional -> "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。

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

var (
	virtdisk = windows.NewLazySystemDLL("VirtDisk.dll")
	procCompactVirtualDisk = virtdisk.NewProc("CompactVirtualDisk")
)

// VirtualDiskHandle (HANDLE), Flags (COMPACT_VIRTUAL_DISK_FLAG), Parameters (COMPACT_VIRTUAL_DISK_PARAMETERS* optional), Overlapped (OVERLAPPED* optional)
r1, _, err := procCompactVirtualDisk.Call(
	uintptr(VirtualDiskHandle),
	uintptr(Flags),
	uintptr(Parameters),
	uintptr(Overlapped),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function CompactVirtualDisk(
  VirtualDiskHandle: THandle;   // HANDLE
  Flags: Integer;   // COMPACT_VIRTUAL_DISK_FLAG
  Parameters: Pointer;   // COMPACT_VIRTUAL_DISK_PARAMETERS* optional
  Overlapped: Pointer   // OVERLAPPED* optional
): DWORD; stdcall;
  external 'VirtDisk.dll' name 'CompactVirtualDisk';

result := DllCall("VirtDisk\CompactVirtualDisk"
    , "Ptr", VirtualDiskHandle   ; HANDLE
    , "Int", Flags   ; COMPACT_VIRTUAL_DISK_FLAG
    , "Ptr", Parameters   ; COMPACT_VIRTUAL_DISK_PARAMETERS* optional
    , "Ptr", Overlapped   ; OVERLAPPED* optional
    , "UInt")   ; return: WIN32_ERROR

●CompactVirtualDisk(VirtualDiskHandle, Flags, Parameters, Overlapped) = DLL("VirtDisk.dll", "dword CompactVirtualDisk(void*, int, void*, void*)")
# 呼び出し: CompactVirtualDisk(VirtualDiskHandle, Flags, Parameters, Overlapped)
# VirtualDiskHandle : HANDLE -> "void*"
# Flags : COMPACT_VIRTUAL_DISK_FLAG -> "int"
# Parameters : COMPACT_VIRTUAL_DISK_PARAMETERS* optional -> "void*"
# Overlapped : OVERLAPPED* optional -> "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)。