MsiSetInternalUI

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

INSTALLUILEVEL MsiSetInternalUI(
    INSTALLUILEVEL dwUILevel,
    HWND* phWnd   // optional
);

<DllImport("msi.dll", ExactSpelling:=True)>
Public Shared Function MsiSetInternalUI(
    dwUILevel As Integer,   ' INSTALLUILEVEL
    phWnd As IntPtr   ' HWND* optional, in/out
) As Integer
End Function

' dwUILevel : INSTALLUILEVEL
' phWnd : HWND* optional, in/out
Declare PtrSafe Function MsiSetInternalUI Lib "msi" ( _
    ByVal dwUILevel As Long, _
    ByVal phWnd 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

MsiSetInternalUI = ctypes.windll.msi.MsiSetInternalUI
MsiSetInternalUI.restype = ctypes.c_int
MsiSetInternalUI.argtypes = [
    ctypes.c_int,  # dwUILevel : INSTALLUILEVEL
    ctypes.c_void_p,  # phWnd : HWND* optional, in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiSetInternalUI = Fiddle::Function.new(
  lib['MsiSetInternalUI'],
  [
    Fiddle::TYPE_INT,  # dwUILevel : INSTALLUILEVEL
    Fiddle::TYPE_VOIDP,  # phWnd : HWND* optional, in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "msi")]
extern "system" {
    fn MsiSetInternalUI(
        dwUILevel: i32,  // INSTALLUILEVEL
        phWnd: *mut *mut core::ffi::c_void  // HWND* optional, in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll")]
public static extern int MsiSetInternalUI(int dwUILevel, IntPtr phWnd);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiSetInternalUI' -Namespace Win32 -PassThru
# $api::MsiSetInternalUI(dwUILevel, phWnd)

#uselib "msi.dll"
#func global MsiSetInternalUI "MsiSetInternalUI" sptr, sptr
; MsiSetInternalUI dwUILevel, phWnd   ; 戻り値は stat
; dwUILevel : INSTALLUILEVEL -> "sptr"
; phWnd : HWND* optional, in/out -> "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 MsiSetInternalUI "MsiSetInternalUI" int, sptr
; res = MsiSetInternalUI(dwUILevel, phWnd)
; dwUILevel : INSTALLUILEVEL -> "int"
; phWnd : HWND* optional, in/out -> "sptr"

; INSTALLUILEVEL MsiSetInternalUI(INSTALLUILEVEL dwUILevel, HWND* phWnd)
#uselib "msi.dll"
#cfunc global MsiSetInternalUI "MsiSetInternalUI" int, intptr
; res = MsiSetInternalUI(dwUILevel, phWnd)
; dwUILevel : INSTALLUILEVEL -> "int"
; phWnd : HWND* optional, in/out -> "intptr"

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

var (
	msi = windows.NewLazySystemDLL("msi.dll")
	procMsiSetInternalUI = msi.NewProc("MsiSetInternalUI")
)

// dwUILevel (INSTALLUILEVEL), phWnd (HWND* optional, in/out)
r1, _, err := procMsiSetInternalUI.Call(
	uintptr(dwUILevel),
	uintptr(phWnd),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INSTALLUILEVEL

function MsiSetInternalUI(
  dwUILevel: Integer;   // INSTALLUILEVEL
  phWnd: Pointer   // HWND* optional, in/out
): Integer; stdcall;
  external 'msi.dll' name 'MsiSetInternalUI';

result := DllCall("msi\MsiSetInternalUI"
    , "Int", dwUILevel   ; INSTALLUILEVEL
    , "Ptr", phWnd   ; HWND* optional, in/out
    , "Int")   ; return: INSTALLUILEVEL

●MsiSetInternalUI(dwUILevel, phWnd) = DLL("msi.dll", "int MsiSetInternalUI(int, void*)")
# 呼び出し: MsiSetInternalUI(dwUILevel, phWnd)
# dwUILevel : INSTALLUILEVEL -> "int"
# phWnd : HWND* optional, in/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)。