SHGetSetFolderCustomSettings

// SHELL32.dll
#include <windows.h>

HRESULT SHGetSetFolderCustomSettings(
    SHFOLDERCUSTOMSETTINGS* pfcs,
    LPCWSTR pszPath,
    DWORD dwReadWrite
);

<DllImport("SHELL32.dll", ExactSpelling:=True)>
Public Shared Function SHGetSetFolderCustomSettings(
    pfcs As IntPtr,   ' SHFOLDERCUSTOMSETTINGS* in/out
    <MarshalAs(UnmanagedType.LPWStr)> pszPath As String,   ' LPCWSTR
    dwReadWrite As UInteger   ' DWORD
) As Integer
End Function

' pfcs : SHFOLDERCUSTOMSETTINGS* in/out
' pszPath : LPCWSTR
' dwReadWrite : DWORD
Declare PtrSafe Function SHGetSetFolderCustomSettings Lib "shell32" ( _
    ByVal pfcs As LongPtr, _
    ByVal pszPath As LongPtr, _
    ByVal dwReadWrite 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

SHGetSetFolderCustomSettings = ctypes.windll.shell32.SHGetSetFolderCustomSettings
SHGetSetFolderCustomSettings.restype = ctypes.c_int
SHGetSetFolderCustomSettings.argtypes = [
    ctypes.c_void_p,  # pfcs : SHFOLDERCUSTOMSETTINGS* in/out
    wintypes.LPCWSTR,  # pszPath : LPCWSTR
    wintypes.DWORD,  # dwReadWrite : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
SHGetSetFolderCustomSettings = Fiddle::Function.new(
  lib['SHGetSetFolderCustomSettings'],
  [
    Fiddle::TYPE_VOIDP,  # pfcs : SHFOLDERCUSTOMSETTINGS* in/out
    Fiddle::TYPE_VOIDP,  # pszPath : LPCWSTR
    -Fiddle::TYPE_INT,  # dwReadWrite : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "shell32")]
extern "system" {
    fn SHGetSetFolderCustomSettings(
        pfcs: *mut SHFOLDERCUSTOMSETTINGS,  // SHFOLDERCUSTOMSETTINGS* in/out
        pszPath: *const u16,  // LPCWSTR
        dwReadWrite: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll")]
public static extern int SHGetSetFolderCustomSettings(IntPtr pfcs, [MarshalAs(UnmanagedType.LPWStr)] string pszPath, uint dwReadWrite);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_SHGetSetFolderCustomSettings' -Namespace Win32 -PassThru
# $api::SHGetSetFolderCustomSettings(pfcs, pszPath, dwReadWrite)

#uselib "SHELL32.dll"
#func global SHGetSetFolderCustomSettings "SHGetSetFolderCustomSettings" sptr, sptr, sptr
; SHGetSetFolderCustomSettings varptr(pfcs), pszPath, dwReadWrite   ; 戻り値は stat
; pfcs : SHFOLDERCUSTOMSETTINGS* in/out -> "sptr"
; pszPath : LPCWSTR -> "sptr"
; dwReadWrite : DWORD -> "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 "SHELL32.dll"
#cfunc global SHGetSetFolderCustomSettings "SHGetSetFolderCustomSettings" var, wstr, int
; res = SHGetSetFolderCustomSettings(pfcs, pszPath, dwReadWrite)
; pfcs : SHFOLDERCUSTOMSETTINGS* in/out -> "var"
; pszPath : LPCWSTR -> "wstr"
; dwReadWrite : DWORD -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; HRESULT SHGetSetFolderCustomSettings(SHFOLDERCUSTOMSETTINGS* pfcs, LPCWSTR pszPath, DWORD dwReadWrite)
#uselib "SHELL32.dll"
#cfunc global SHGetSetFolderCustomSettings "SHGetSetFolderCustomSettings" var, wstr, int
; res = SHGetSetFolderCustomSettings(pfcs, pszPath, dwReadWrite)
; pfcs : SHFOLDERCUSTOMSETTINGS* in/out -> "var"
; pszPath : LPCWSTR -> "wstr"
; dwReadWrite : DWORD -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	shell32 = windows.NewLazySystemDLL("SHELL32.dll")
	procSHGetSetFolderCustomSettings = shell32.NewProc("SHGetSetFolderCustomSettings")
)

// pfcs (SHFOLDERCUSTOMSETTINGS* in/out), pszPath (LPCWSTR), dwReadWrite (DWORD)
r1, _, err := procSHGetSetFolderCustomSettings.Call(
	uintptr(pfcs),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszPath))),
	uintptr(dwReadWrite),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SHGetSetFolderCustomSettings(
  pfcs: Pointer;   // SHFOLDERCUSTOMSETTINGS* in/out
  pszPath: PWideChar;   // LPCWSTR
  dwReadWrite: DWORD   // DWORD
): Integer; stdcall;
  external 'SHELL32.dll' name 'SHGetSetFolderCustomSettings';

result := DllCall("SHELL32\SHGetSetFolderCustomSettings"
    , "Ptr", pfcs   ; SHFOLDERCUSTOMSETTINGS* in/out
    , "WStr", pszPath   ; LPCWSTR
    , "UInt", dwReadWrite   ; DWORD
    , "Int")   ; return: HRESULT

●SHGetSetFolderCustomSettings(pfcs, pszPath, dwReadWrite) = DLL("SHELL32.dll", "int SHGetSetFolderCustomSettings(void*, char*, dword)")
# 呼び出し: SHGetSetFolderCustomSettings(pfcs, pszPath, dwReadWrite)
# pfcs : SHFOLDERCUSTOMSETTINGS* in/out -> "void*"
# pszPath : LPCWSTR -> "char*"
# dwReadWrite : DWORD -> "dword"
# 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)。