MsiSetInstallLevel

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

DWORD MsiSetInstallLevel(
    MSIHANDLE hInstall,
    INT iInstallLevel
);

<DllImport("msi.dll", ExactSpelling:=True)>
Public Shared Function MsiSetInstallLevel(
    hInstall As UInteger,   ' MSIHANDLE
    iInstallLevel As Integer   ' INT
) As UInteger
End Function

' hInstall : MSIHANDLE
' iInstallLevel : INT
Declare PtrSafe Function MsiSetInstallLevel Lib "msi" ( _
    ByVal hInstall As Long, _
    ByVal iInstallLevel 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

MsiSetInstallLevel = ctypes.windll.msi.MsiSetInstallLevel
MsiSetInstallLevel.restype = wintypes.DWORD
MsiSetInstallLevel.argtypes = [
    wintypes.DWORD,  # hInstall : MSIHANDLE
    ctypes.c_int,  # iInstallLevel : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiSetInstallLevel = Fiddle::Function.new(
  lib['MsiSetInstallLevel'],
  [
    -Fiddle::TYPE_INT,  # hInstall : MSIHANDLE
    Fiddle::TYPE_INT,  # iInstallLevel : INT
  ],
  -Fiddle::TYPE_INT)

#[link(name = "msi")]
extern "system" {
    fn MsiSetInstallLevel(
        hInstall: u32,  // MSIHANDLE
        iInstallLevel: i32  // INT
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll")]
public static extern uint MsiSetInstallLevel(uint hInstall, int iInstallLevel);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiSetInstallLevel' -Namespace Win32 -PassThru
# $api::MsiSetInstallLevel(hInstall, iInstallLevel)

#uselib "msi.dll"
#func global MsiSetInstallLevel "MsiSetInstallLevel" sptr, sptr
; MsiSetInstallLevel hInstall, iInstallLevel   ; 戻り値は stat
; hInstall : MSIHANDLE -> "sptr"
; iInstallLevel : INT -> "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 "msi.dll"
#cfunc global MsiSetInstallLevel "MsiSetInstallLevel" int, int
; res = MsiSetInstallLevel(hInstall, iInstallLevel)
; hInstall : MSIHANDLE -> "int"
; iInstallLevel : INT -> "int"

; DWORD MsiSetInstallLevel(MSIHANDLE hInstall, INT iInstallLevel)
#uselib "msi.dll"
#cfunc global MsiSetInstallLevel "MsiSetInstallLevel" int, int
; res = MsiSetInstallLevel(hInstall, iInstallLevel)
; hInstall : MSIHANDLE -> "int"
; iInstallLevel : INT -> "int"

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

var (
	msi = windows.NewLazySystemDLL("msi.dll")
	procMsiSetInstallLevel = msi.NewProc("MsiSetInstallLevel")
)

// hInstall (MSIHANDLE), iInstallLevel (INT)
r1, _, err := procMsiSetInstallLevel.Call(
	uintptr(hInstall),
	uintptr(iInstallLevel),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function MsiSetInstallLevel(
  hInstall: DWORD;   // MSIHANDLE
  iInstallLevel: Integer   // INT
): DWORD; stdcall;
  external 'msi.dll' name 'MsiSetInstallLevel';

result := DllCall("msi\MsiSetInstallLevel"
    , "UInt", hInstall   ; MSIHANDLE
    , "Int", iInstallLevel   ; INT
    , "UInt")   ; return: DWORD

●MsiSetInstallLevel(hInstall, iInstallLevel) = DLL("msi.dll", "dword MsiSetInstallLevel(dword, int)")
# 呼び出し: MsiSetInstallLevel(hInstall, iInstallLevel)
# hInstall : MSIHANDLE -> "dword"
# iInstallLevel : INT -> "int"
# 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)。