MsiRecordSetStreamW

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

DWORD MsiRecordSetStreamW(
    MSIHANDLE hRecord,
    DWORD iField,
    LPCWSTR szFilePath
);

<DllImport("msi.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function MsiRecordSetStreamW(
    hRecord As UInteger,   ' MSIHANDLE
    iField As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> szFilePath As String   ' LPCWSTR
) As UInteger
End Function

' hRecord : MSIHANDLE
' iField : DWORD
' szFilePath : LPCWSTR
Declare PtrSafe Function MsiRecordSetStreamW Lib "msi" ( _
    ByVal hRecord As Long, _
    ByVal iField As Long, _
    ByVal szFilePath 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

MsiRecordSetStreamW = ctypes.windll.msi.MsiRecordSetStreamW
MsiRecordSetStreamW.restype = wintypes.DWORD
MsiRecordSetStreamW.argtypes = [
    wintypes.DWORD,  # hRecord : MSIHANDLE
    wintypes.DWORD,  # iField : DWORD
    wintypes.LPCWSTR,  # szFilePath : LPCWSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiRecordSetStreamW = Fiddle::Function.new(
  lib['MsiRecordSetStreamW'],
  [
    -Fiddle::TYPE_INT,  # hRecord : MSIHANDLE
    -Fiddle::TYPE_INT,  # iField : DWORD
    Fiddle::TYPE_VOIDP,  # szFilePath : LPCWSTR
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "msi")]
extern "system" {
    fn MsiRecordSetStreamW(
        hRecord: u32,  // MSIHANDLE
        iField: u32,  // DWORD
        szFilePath: *const u16  // LPCWSTR
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll", CharSet = CharSet.Unicode)]
public static extern uint MsiRecordSetStreamW(uint hRecord, uint iField, [MarshalAs(UnmanagedType.LPWStr)] string szFilePath);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiRecordSetStreamW' -Namespace Win32 -PassThru
# $api::MsiRecordSetStreamW(hRecord, iField, szFilePath)

#uselib "msi.dll"
#func global MsiRecordSetStreamW "MsiRecordSetStreamW" wptr, wptr, wptr
; MsiRecordSetStreamW hRecord, iField, szFilePath   ; 戻り値は stat
; hRecord : MSIHANDLE -> "wptr"
; iField : DWORD -> "wptr"
; szFilePath : LPCWSTR -> "wptr"
; ※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 "msi.dll"
#cfunc global MsiRecordSetStreamW "MsiRecordSetStreamW" int, int, wstr
; res = MsiRecordSetStreamW(hRecord, iField, szFilePath)
; hRecord : MSIHANDLE -> "int"
; iField : DWORD -> "int"
; szFilePath : LPCWSTR -> "wstr"

; DWORD MsiRecordSetStreamW(MSIHANDLE hRecord, DWORD iField, LPCWSTR szFilePath)
#uselib "msi.dll"
#cfunc global MsiRecordSetStreamW "MsiRecordSetStreamW" int, int, wstr
; res = MsiRecordSetStreamW(hRecord, iField, szFilePath)
; hRecord : MSIHANDLE -> "int"
; iField : DWORD -> "int"
; szFilePath : LPCWSTR -> "wstr"

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

var (
	msi = windows.NewLazySystemDLL("msi.dll")
	procMsiRecordSetStreamW = msi.NewProc("MsiRecordSetStreamW")
)

// hRecord (MSIHANDLE), iField (DWORD), szFilePath (LPCWSTR)
r1, _, err := procMsiRecordSetStreamW.Call(
	uintptr(hRecord),
	uintptr(iField),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szFilePath))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function MsiRecordSetStreamW(
  hRecord: DWORD;   // MSIHANDLE
  iField: DWORD;   // DWORD
  szFilePath: PWideChar   // LPCWSTR
): DWORD; stdcall;
  external 'msi.dll' name 'MsiRecordSetStreamW';

result := DllCall("msi\MsiRecordSetStreamW"
    , "UInt", hRecord   ; MSIHANDLE
    , "UInt", iField   ; DWORD
    , "WStr", szFilePath   ; LPCWSTR
    , "UInt")   ; return: DWORD

●MsiRecordSetStreamW(hRecord, iField, szFilePath) = DLL("msi.dll", "dword MsiRecordSetStreamW(dword, dword, char*)")
# 呼び出し: MsiRecordSetStreamW(hRecord, iField, szFilePath)
# hRecord : MSIHANDLE -> "dword"
# iField : DWORD -> "dword"
# szFilePath : LPCWSTR -> "char*"
# 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。