ResizeVirtualDisk

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

WIN32_ERROR ResizeVirtualDisk(
    HANDLE VirtualDiskHandle,
    RESIZE_VIRTUAL_DISK_FLAG Flags,
    RESIZE_VIRTUAL_DISK_PARAMETERS* Parameters,
    OVERLAPPED* Overlapped   // optional
);

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

' VirtualDiskHandle : HANDLE
' Flags : RESIZE_VIRTUAL_DISK_FLAG
' Parameters : RESIZE_VIRTUAL_DISK_PARAMETERS*
' Overlapped : OVERLAPPED* optional
Declare PtrSafe Function ResizeVirtualDisk 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

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

require 'fiddle'
require 'fiddle/import'

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

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

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

#uselib "VirtDisk.dll"
#func global ResizeVirtualDisk "ResizeVirtualDisk" sptr, sptr, sptr, sptr
; ResizeVirtualDisk VirtualDiskHandle, Flags, varptr(Parameters), varptr(Overlapped)   ; 戻り値は stat
; VirtualDiskHandle : HANDLE -> "sptr"
; Flags : RESIZE_VIRTUAL_DISK_FLAG -> "sptr"
; Parameters : RESIZE_VIRTUAL_DISK_PARAMETERS* -> "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 ResizeVirtualDisk "ResizeVirtualDisk" sptr, int, var, var
; res = ResizeVirtualDisk(VirtualDiskHandle, Flags, Parameters, Overlapped)
; VirtualDiskHandle : HANDLE -> "sptr"
; Flags : RESIZE_VIRTUAL_DISK_FLAG -> "int"
; Parameters : RESIZE_VIRTUAL_DISK_PARAMETERS* -> "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 ResizeVirtualDisk(HANDLE VirtualDiskHandle, RESIZE_VIRTUAL_DISK_FLAG Flags, RESIZE_VIRTUAL_DISK_PARAMETERS* Parameters, OVERLAPPED* Overlapped)
#uselib "VirtDisk.dll"
#cfunc global ResizeVirtualDisk "ResizeVirtualDisk" intptr, int, var, var
; res = ResizeVirtualDisk(VirtualDiskHandle, Flags, Parameters, Overlapped)
; VirtualDiskHandle : HANDLE -> "intptr"
; Flags : RESIZE_VIRTUAL_DISK_FLAG -> "int"
; Parameters : RESIZE_VIRTUAL_DISK_PARAMETERS* -> "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")
	procResizeVirtualDisk = virtdisk.NewProc("ResizeVirtualDisk")
)

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

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

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

●ResizeVirtualDisk(VirtualDiskHandle, Flags, Parameters, Overlapped) = DLL("VirtDisk.dll", "dword ResizeVirtualDisk(void*, int, void*, void*)")
# 呼び出し: ResizeVirtualDisk(VirtualDiskHandle, Flags, Parameters, Overlapped)
# VirtualDiskHandle : HANDLE -> "void*"
# Flags : RESIZE_VIRTUAL_DISK_FLAG -> "int"
# Parameters : RESIZE_VIRTUAL_DISK_PARAMETERS* -> "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)。