MsiSetTargetPathA

// msi.dll  (ANSI / -A)
#include <windows.h>

DWORD MsiSetTargetPathA(
    MSIHANDLE hInstall,
    LPCSTR szFolder,
    LPCSTR szFolderPath
);

<DllImport("msi.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function MsiSetTargetPathA(
    hInstall As UInteger,   ' MSIHANDLE
    <MarshalAs(UnmanagedType.LPStr)> szFolder As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> szFolderPath As String   ' LPCSTR
) As UInteger
End Function

' hInstall : MSIHANDLE
' szFolder : LPCSTR
' szFolderPath : LPCSTR
Declare PtrSafe Function MsiSetTargetPathA Lib "msi" ( _
    ByVal hInstall As Long, _
    ByVal szFolder As String, _
    ByVal szFolderPath As String) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

MsiSetTargetPathA = ctypes.windll.msi.MsiSetTargetPathA
MsiSetTargetPathA.restype = wintypes.DWORD
MsiSetTargetPathA.argtypes = [
    wintypes.DWORD,  # hInstall : MSIHANDLE
    wintypes.LPCSTR,  # szFolder : LPCSTR
    wintypes.LPCSTR,  # szFolderPath : LPCSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiSetTargetPathA = Fiddle::Function.new(
  lib['MsiSetTargetPathA'],
  [
    -Fiddle::TYPE_INT,  # hInstall : MSIHANDLE
    Fiddle::TYPE_VOIDP,  # szFolder : LPCSTR
    Fiddle::TYPE_VOIDP,  # szFolderPath : LPCSTR
  ],
  -Fiddle::TYPE_INT)

#[link(name = "msi")]
extern "system" {
    fn MsiSetTargetPathA(
        hInstall: u32,  // MSIHANDLE
        szFolder: *const u8,  // LPCSTR
        szFolderPath: *const u8  // LPCSTR
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll", CharSet = CharSet.Ansi)]
public static extern uint MsiSetTargetPathA(uint hInstall, [MarshalAs(UnmanagedType.LPStr)] string szFolder, [MarshalAs(UnmanagedType.LPStr)] string szFolderPath);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiSetTargetPathA' -Namespace Win32 -PassThru
# $api::MsiSetTargetPathA(hInstall, szFolder, szFolderPath)

#uselib "msi.dll"
#func global MsiSetTargetPathA "MsiSetTargetPathA" sptr, sptr, sptr
; MsiSetTargetPathA hInstall, szFolder, szFolderPath   ; 戻り値は stat
; hInstall : MSIHANDLE -> "sptr"
; szFolder : LPCSTR -> "sptr"
; szFolderPath : LPCSTR -> "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 MsiSetTargetPathA "MsiSetTargetPathA" int, str, str
; res = MsiSetTargetPathA(hInstall, szFolder, szFolderPath)
; hInstall : MSIHANDLE -> "int"
; szFolder : LPCSTR -> "str"
; szFolderPath : LPCSTR -> "str"

; DWORD MsiSetTargetPathA(MSIHANDLE hInstall, LPCSTR szFolder, LPCSTR szFolderPath)
#uselib "msi.dll"
#cfunc global MsiSetTargetPathA "MsiSetTargetPathA" int, str, str
; res = MsiSetTargetPathA(hInstall, szFolder, szFolderPath)
; hInstall : MSIHANDLE -> "int"
; szFolder : LPCSTR -> "str"
; szFolderPath : LPCSTR -> "str"

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

var (
	msi = windows.NewLazySystemDLL("msi.dll")
	procMsiSetTargetPathA = msi.NewProc("MsiSetTargetPathA")
)

// hInstall (MSIHANDLE), szFolder (LPCSTR), szFolderPath (LPCSTR)
r1, _, err := procMsiSetTargetPathA.Call(
	uintptr(hInstall),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szFolder))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szFolderPath))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function MsiSetTargetPathA(
  hInstall: DWORD;   // MSIHANDLE
  szFolder: PAnsiChar;   // LPCSTR
  szFolderPath: PAnsiChar   // LPCSTR
): DWORD; stdcall;
  external 'msi.dll' name 'MsiSetTargetPathA';

result := DllCall("msi\MsiSetTargetPathA"
    , "UInt", hInstall   ; MSIHANDLE
    , "AStr", szFolder   ; LPCSTR
    , "AStr", szFolderPath   ; LPCSTR
    , "UInt")   ; return: DWORD

●MsiSetTargetPathA(hInstall, szFolder, szFolderPath) = DLL("msi.dll", "dword MsiSetTargetPathA(dword, char*, char*)")
# 呼び出し: MsiSetTargetPathA(hInstall, szFolder, szFolderPath)
# hInstall : MSIHANDLE -> "dword"
# szFolder : LPCSTR -> "char*"
# szFolderPath : LPCSTR -> "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)。