MsiSetExternalUIW

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

INSTALLUI_HANDLERW MsiSetExternalUIW(
    INSTALLUI_HANDLERW puiHandler,   // optional
    DWORD dwMessageFilter,
    void* pvContext   // optional
);

<DllImport("msi.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function MsiSetExternalUIW(
    puiHandler As IntPtr,   ' INSTALLUI_HANDLERW optional
    dwMessageFilter As UInteger,   ' DWORD
    pvContext As IntPtr   ' void* optional
) As IntPtr
End Function

' puiHandler : INSTALLUI_HANDLERW optional
' dwMessageFilter : DWORD
' pvContext : void* optional
Declare PtrSafe Function MsiSetExternalUIW Lib "msi" ( _
    ByVal puiHandler As LongPtr, _
    ByVal dwMessageFilter As Long, _
    ByVal pvContext As LongPtr) As LongPtr
' 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

MsiSetExternalUIW = ctypes.windll.msi.MsiSetExternalUIW
MsiSetExternalUIW.restype = ctypes.c_void_p
MsiSetExternalUIW.argtypes = [
    ctypes.c_void_p,  # puiHandler : INSTALLUI_HANDLERW optional
    wintypes.DWORD,  # dwMessageFilter : DWORD
    ctypes.POINTER(None),  # pvContext : void* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiSetExternalUIW = Fiddle::Function.new(
  lib['MsiSetExternalUIW'],
  [
    Fiddle::TYPE_VOIDP,  # puiHandler : INSTALLUI_HANDLERW optional
    -Fiddle::TYPE_INT,  # dwMessageFilter : DWORD
    Fiddle::TYPE_VOIDP,  # pvContext : void* optional
  ],
  Fiddle::TYPE_VOIDP)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "msi")]
extern "system" {
    fn MsiSetExternalUIW(
        puiHandler: *const core::ffi::c_void,  // INSTALLUI_HANDLERW optional
        dwMessageFilter: u32,  // DWORD
        pvContext: *mut ()  // void* optional
    ) -> *const core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll", CharSet = CharSet.Unicode)]
public static extern IntPtr MsiSetExternalUIW(IntPtr puiHandler, uint dwMessageFilter, IntPtr pvContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiSetExternalUIW' -Namespace Win32 -PassThru
# $api::MsiSetExternalUIW(puiHandler, dwMessageFilter, pvContext)

#uselib "msi.dll"
#func global MsiSetExternalUIW "MsiSetExternalUIW" wptr, wptr, wptr
; MsiSetExternalUIW puiHandler, dwMessageFilter, pvContext   ; 戻り値は stat
; puiHandler : INSTALLUI_HANDLERW optional -> "wptr"
; dwMessageFilter : DWORD -> "wptr"
; pvContext : void* optional -> "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 MsiSetExternalUIW "MsiSetExternalUIW" sptr, int, sptr
; res = MsiSetExternalUIW(puiHandler, dwMessageFilter, pvContext)
; puiHandler : INSTALLUI_HANDLERW optional -> "sptr"
; dwMessageFilter : DWORD -> "int"
; pvContext : void* optional -> "sptr"

; INSTALLUI_HANDLERW MsiSetExternalUIW(INSTALLUI_HANDLERW puiHandler, DWORD dwMessageFilter, void* pvContext)
#uselib "msi.dll"
#cfunc global MsiSetExternalUIW "MsiSetExternalUIW" intptr, int, intptr
; res = MsiSetExternalUIW(puiHandler, dwMessageFilter, pvContext)
; puiHandler : INSTALLUI_HANDLERW optional -> "intptr"
; dwMessageFilter : DWORD -> "int"
; pvContext : void* optional -> "intptr"

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

var (
	msi = windows.NewLazySystemDLL("msi.dll")
	procMsiSetExternalUIW = msi.NewProc("MsiSetExternalUIW")
)

// puiHandler (INSTALLUI_HANDLERW optional), dwMessageFilter (DWORD), pvContext (void* optional)
r1, _, err := procMsiSetExternalUIW.Call(
	uintptr(puiHandler),
	uintptr(dwMessageFilter),
	uintptr(pvContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INSTALLUI_HANDLERW

function MsiSetExternalUIW(
  puiHandler: Pointer;   // INSTALLUI_HANDLERW optional
  dwMessageFilter: DWORD;   // DWORD
  pvContext: Pointer   // void* optional
): Pointer; stdcall;
  external 'msi.dll' name 'MsiSetExternalUIW';

result := DllCall("msi\MsiSetExternalUIW"
    , "Ptr", puiHandler   ; INSTALLUI_HANDLERW optional
    , "UInt", dwMessageFilter   ; DWORD
    , "Ptr", pvContext   ; void* optional
    , "Ptr")   ; return: INSTALLUI_HANDLERW

●MsiSetExternalUIW(puiHandler, dwMessageFilter, pvContext) = DLL("msi.dll", "void* MsiSetExternalUIW(void*, dword, void*)")
# 呼び出し: MsiSetExternalUIW(puiHandler, dwMessageFilter, pvContext)
# puiHandler : INSTALLUI_HANDLERW optional -> "void*"
# dwMessageFilter : DWORD -> "dword"
# pvContext : void* optional -> "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。