GetDeltaSignatureW

// msdelta.dll  (Unicode / -W)
#include <windows.h>

BOOL GetDeltaSignatureW(
    LONGLONG FileTypeSet,
    ALG_ID HashAlgId,
    LPCWSTR lpSourceName,
    DELTA_HASH* lpHash
);

<DllImport("msdelta.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function GetDeltaSignatureW(
    FileTypeSet As Long,   ' LONGLONG
    HashAlgId As UInteger,   ' ALG_ID
    <MarshalAs(UnmanagedType.LPWStr)> lpSourceName As String,   ' LPCWSTR
    lpHash As IntPtr   ' DELTA_HASH* out
) As Boolean
End Function

' FileTypeSet : LONGLONG
' HashAlgId : ALG_ID
' lpSourceName : LPCWSTR
' lpHash : DELTA_HASH* out
Declare PtrSafe Function GetDeltaSignatureW Lib "msdelta" ( _
    ByVal FileTypeSet As LongLong, _
    ByVal HashAlgId As Long, _
    ByVal lpSourceName As LongPtr, _
    ByVal lpHash As LongPtr) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetDeltaSignatureW = ctypes.windll.msdelta.GetDeltaSignatureW
GetDeltaSignatureW.restype = wintypes.BOOL
GetDeltaSignatureW.argtypes = [
    ctypes.c_longlong,  # FileTypeSet : LONGLONG
    wintypes.DWORD,  # HashAlgId : ALG_ID
    wintypes.LPCWSTR,  # lpSourceName : LPCWSTR
    ctypes.c_void_p,  # lpHash : DELTA_HASH* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msdelta.dll')
GetDeltaSignatureW = Fiddle::Function.new(
  lib['GetDeltaSignatureW'],
  [
    Fiddle::TYPE_LONG_LONG,  # FileTypeSet : LONGLONG
    -Fiddle::TYPE_INT,  # HashAlgId : ALG_ID
    Fiddle::TYPE_VOIDP,  # lpSourceName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # lpHash : DELTA_HASH* out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "msdelta")]
extern "system" {
    fn GetDeltaSignatureW(
        FileTypeSet: i64,  // LONGLONG
        HashAlgId: u32,  // ALG_ID
        lpSourceName: *const u16,  // LPCWSTR
        lpHash: *mut DELTA_HASH  // DELTA_HASH* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("msdelta.dll", CharSet = CharSet.Unicode)]
public static extern bool GetDeltaSignatureW(long FileTypeSet, uint HashAlgId, [MarshalAs(UnmanagedType.LPWStr)] string lpSourceName, IntPtr lpHash);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msdelta_GetDeltaSignatureW' -Namespace Win32 -PassThru
# $api::GetDeltaSignatureW(FileTypeSet, HashAlgId, lpSourceName, lpHash)

#uselib "msdelta.dll"
#func global GetDeltaSignatureW "GetDeltaSignatureW" wptr, wptr, wptr, wptr
; GetDeltaSignatureW FileTypeSet, HashAlgId, lpSourceName, varptr(lpHash)   ; 戻り値は stat
; FileTypeSet : LONGLONG -> "wptr"
; HashAlgId : ALG_ID -> "wptr"
; lpSourceName : LPCWSTR -> "wptr"
; lpHash : DELTA_HASH* out -> "wptr"
; ※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 "msdelta.dll"
#cfunc global GetDeltaSignatureW "GetDeltaSignatureW" int64, int, wstr, var
; res = GetDeltaSignatureW(FileTypeSet, HashAlgId, lpSourceName, lpHash)
; FileTypeSet : LONGLONG -> "int64"
; HashAlgId : ALG_ID -> "int"
; lpSourceName : LPCWSTR -> "wstr"
; lpHash : DELTA_HASH* 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)。

; BOOL GetDeltaSignatureW(LONGLONG FileTypeSet, ALG_ID HashAlgId, LPCWSTR lpSourceName, DELTA_HASH* lpHash)
#uselib "msdelta.dll"
#cfunc global GetDeltaSignatureW "GetDeltaSignatureW" int64, int, wstr, var
; res = GetDeltaSignatureW(FileTypeSet, HashAlgId, lpSourceName, lpHash)
; FileTypeSet : LONGLONG -> "int64"
; HashAlgId : ALG_ID -> "int"
; lpSourceName : LPCWSTR -> "wstr"
; lpHash : DELTA_HASH* 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。

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

var (
	msdelta = windows.NewLazySystemDLL("msdelta.dll")
	procGetDeltaSignatureW = msdelta.NewProc("GetDeltaSignatureW")
)

// FileTypeSet (LONGLONG), HashAlgId (ALG_ID), lpSourceName (LPCWSTR), lpHash (DELTA_HASH* out)
r1, _, err := procGetDeltaSignatureW.Call(
	uintptr(FileTypeSet),
	uintptr(HashAlgId),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpSourceName))),
	uintptr(lpHash),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetDeltaSignatureW(
  FileTypeSet: Int64;   // LONGLONG
  HashAlgId: DWORD;   // ALG_ID
  lpSourceName: PWideChar;   // LPCWSTR
  lpHash: Pointer   // DELTA_HASH* out
): BOOL; stdcall;
  external 'msdelta.dll' name 'GetDeltaSignatureW';

result := DllCall("msdelta\GetDeltaSignatureW"
    , "Int64", FileTypeSet   ; LONGLONG
    , "UInt", HashAlgId   ; ALG_ID
    , "WStr", lpSourceName   ; LPCWSTR
    , "Ptr", lpHash   ; DELTA_HASH* out
    , "Int")   ; return: BOOL

●GetDeltaSignatureW(FileTypeSet, HashAlgId, lpSourceName, lpHash) = DLL("msdelta.dll", "bool GetDeltaSignatureW(int64, dword, char*, void*)")
# 呼び出し: GetDeltaSignatureW(FileTypeSet, HashAlgId, lpSourceName, lpHash)
# FileTypeSet : LONGLONG -> "int64"
# HashAlgId : ALG_ID -> "dword"
# lpSourceName : LPCWSTR -> "char*"
# lpHash : DELTA_HASH* 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。