SetFilePointerEx

// KERNEL32.dll
#include <windows.h>

BOOL SetFilePointerEx(
    HANDLE hFile,
    LONGLONG liDistanceToMove,
    LONGLONG* lpNewFilePointer,   // optional
    SET_FILE_POINTER_MOVE_METHOD dwMoveMethod
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetFilePointerEx(
    hFile As IntPtr,   ' HANDLE
    liDistanceToMove As Long,   ' LONGLONG
    lpNewFilePointer As IntPtr,   ' LONGLONG* optional, out
    dwMoveMethod As UInteger   ' SET_FILE_POINTER_MOVE_METHOD
) As Boolean
End Function

' hFile : HANDLE
' liDistanceToMove : LONGLONG
' lpNewFilePointer : LONGLONG* optional, out
' dwMoveMethod : SET_FILE_POINTER_MOVE_METHOD
Declare PtrSafe Function SetFilePointerEx Lib "kernel32" ( _
    ByVal hFile As LongPtr, _
    ByVal liDistanceToMove As LongLong, _
    ByVal lpNewFilePointer As LongPtr, _
    ByVal dwMoveMethod As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SetFilePointerEx = ctypes.windll.kernel32.SetFilePointerEx
SetFilePointerEx.restype = wintypes.BOOL
SetFilePointerEx.argtypes = [
    wintypes.HANDLE,  # hFile : HANDLE
    ctypes.c_longlong,  # liDistanceToMove : LONGLONG
    ctypes.POINTER(ctypes.c_longlong),  # lpNewFilePointer : LONGLONG* optional, out
    wintypes.DWORD,  # dwMoveMethod : SET_FILE_POINTER_MOVE_METHOD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
SetFilePointerEx = Fiddle::Function.new(
  lib['SetFilePointerEx'],
  [
    Fiddle::TYPE_VOIDP,  # hFile : HANDLE
    Fiddle::TYPE_LONG_LONG,  # liDistanceToMove : LONGLONG
    Fiddle::TYPE_VOIDP,  # lpNewFilePointer : LONGLONG* optional, out
    -Fiddle::TYPE_INT,  # dwMoveMethod : SET_FILE_POINTER_MOVE_METHOD
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn SetFilePointerEx(
        hFile: *mut core::ffi::c_void,  // HANDLE
        liDistanceToMove: i64,  // LONGLONG
        lpNewFilePointer: *mut i64,  // LONGLONG* optional, out
        dwMoveMethod: u32  // SET_FILE_POINTER_MOVE_METHOD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool SetFilePointerEx(IntPtr hFile, long liDistanceToMove, IntPtr lpNewFilePointer, uint dwMoveMethod);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_SetFilePointerEx' -Namespace Win32 -PassThru
# $api::SetFilePointerEx(hFile, liDistanceToMove, lpNewFilePointer, dwMoveMethod)

#uselib "KERNEL32.dll"
#func global SetFilePointerEx "SetFilePointerEx" sptr, sptr, sptr, sptr
; SetFilePointerEx hFile, liDistanceToMove, varptr(lpNewFilePointer), dwMoveMethod   ; 戻り値は stat
; hFile : HANDLE -> "sptr"
; liDistanceToMove : LONGLONG -> "sptr"
; lpNewFilePointer : LONGLONG* optional, out -> "sptr"
; dwMoveMethod : SET_FILE_POINTER_MOVE_METHOD -> "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。

#uselib "KERNEL32.dll"
#cfunc global SetFilePointerEx "SetFilePointerEx" sptr, int64, var, int
; res = SetFilePointerEx(hFile, liDistanceToMove, lpNewFilePointer, dwMoveMethod)
; hFile : HANDLE -> "sptr"
; liDistanceToMove : LONGLONG -> "int64"
; lpNewFilePointer : LONGLONG* optional, out -> "var"
; dwMoveMethod : SET_FILE_POINTER_MOVE_METHOD -> "int"
; ※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)。

; BOOL SetFilePointerEx(HANDLE hFile, LONGLONG liDistanceToMove, LONGLONG* lpNewFilePointer, SET_FILE_POINTER_MOVE_METHOD dwMoveMethod)
#uselib "KERNEL32.dll"
#cfunc global SetFilePointerEx "SetFilePointerEx" intptr, int64, var, int
; res = SetFilePointerEx(hFile, liDistanceToMove, lpNewFilePointer, dwMoveMethod)
; hFile : HANDLE -> "intptr"
; liDistanceToMove : LONGLONG -> "int64"
; lpNewFilePointer : LONGLONG* optional, out -> "var"
; dwMoveMethod : SET_FILE_POINTER_MOVE_METHOD -> "int"
; ※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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procSetFilePointerEx = kernel32.NewProc("SetFilePointerEx")
)

// hFile (HANDLE), liDistanceToMove (LONGLONG), lpNewFilePointer (LONGLONG* optional, out), dwMoveMethod (SET_FILE_POINTER_MOVE_METHOD)
r1, _, err := procSetFilePointerEx.Call(
	uintptr(hFile),
	uintptr(liDistanceToMove),
	uintptr(lpNewFilePointer),
	uintptr(dwMoveMethod),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetFilePointerEx(
  hFile: THandle;   // HANDLE
  liDistanceToMove: Int64;   // LONGLONG
  lpNewFilePointer: Pointer;   // LONGLONG* optional, out
  dwMoveMethod: DWORD   // SET_FILE_POINTER_MOVE_METHOD
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'SetFilePointerEx';

result := DllCall("KERNEL32\SetFilePointerEx"
    , "Ptr", hFile   ; HANDLE
    , "Int64", liDistanceToMove   ; LONGLONG
    , "Ptr", lpNewFilePointer   ; LONGLONG* optional, out
    , "UInt", dwMoveMethod   ; SET_FILE_POINTER_MOVE_METHOD
    , "Int")   ; return: BOOL

●SetFilePointerEx(hFile, liDistanceToMove, lpNewFilePointer, dwMoveMethod) = DLL("KERNEL32.dll", "bool SetFilePointerEx(void*, int64, void*, dword)")
# 呼び出し: SetFilePointerEx(hFile, liDistanceToMove, lpNewFilePointer, dwMoveMethod)
# hFile : HANDLE -> "void*"
# liDistanceToMove : LONGLONG -> "int64"
# lpNewFilePointer : LONGLONG* optional, out -> "void*"
# dwMoveMethod : SET_FILE_POINTER_MOVE_METHOD -> "dword"
# 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)。