SHCreateItemInKnownFolder

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

HRESULT SHCreateItemInKnownFolder(
    const GUID* kfid,
    DWORD dwKFFlags,
    LPCWSTR pszItem,   // optional
    const GUID* riid,
    void** ppv
);

<DllImport("SHELL32.dll", ExactSpelling:=True)>
Public Shared Function SHCreateItemInKnownFolder(
    ByRef kfid As Guid,   ' GUID*
    dwKFFlags As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> pszItem As String,   ' LPCWSTR optional
    ByRef riid As Guid,   ' GUID*
    ppv As IntPtr   ' void** out
) As Integer
End Function

' kfid : GUID*
' dwKFFlags : DWORD
' pszItem : LPCWSTR optional
' riid : GUID*
' ppv : void** out
Declare PtrSafe Function SHCreateItemInKnownFolder Lib "shell32" ( _
    ByVal kfid As LongPtr, _
    ByVal dwKFFlags As Long, _
    ByVal pszItem As LongPtr, _
    ByVal riid As LongPtr, _
    ByVal ppv 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

SHCreateItemInKnownFolder = ctypes.windll.shell32.SHCreateItemInKnownFolder
SHCreateItemInKnownFolder.restype = ctypes.c_int
SHCreateItemInKnownFolder.argtypes = [
    ctypes.c_void_p,  # kfid : GUID*
    wintypes.DWORD,  # dwKFFlags : DWORD
    wintypes.LPCWSTR,  # pszItem : LPCWSTR optional
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # ppv : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
SHCreateItemInKnownFolder = Fiddle::Function.new(
  lib['SHCreateItemInKnownFolder'],
  [
    Fiddle::TYPE_VOIDP,  # kfid : GUID*
    -Fiddle::TYPE_INT,  # dwKFFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pszItem : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # ppv : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "shell32")]
extern "system" {
    fn SHCreateItemInKnownFolder(
        kfid: *const GUID,  // GUID*
        dwKFFlags: u32,  // DWORD
        pszItem: *const u16,  // LPCWSTR optional
        riid: *const GUID,  // GUID*
        ppv: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll")]
public static extern int SHCreateItemInKnownFolder(ref Guid kfid, uint dwKFFlags, [MarshalAs(UnmanagedType.LPWStr)] string pszItem, ref Guid riid, IntPtr ppv);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_SHCreateItemInKnownFolder' -Namespace Win32 -PassThru
# $api::SHCreateItemInKnownFolder(kfid, dwKFFlags, pszItem, riid, ppv)

#uselib "SHELL32.dll"
#func global SHCreateItemInKnownFolder "SHCreateItemInKnownFolder" sptr, sptr, sptr, sptr, sptr
; SHCreateItemInKnownFolder varptr(kfid), dwKFFlags, pszItem, varptr(riid), ppv   ; 戻り値は stat
; kfid : GUID* -> "sptr"
; dwKFFlags : DWORD -> "sptr"
; pszItem : LPCWSTR optional -> "sptr"
; riid : GUID* -> "sptr"
; ppv : void** 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 "SHELL32.dll"
#cfunc global SHCreateItemInKnownFolder "SHCreateItemInKnownFolder" var, int, wstr, var, sptr
; res = SHCreateItemInKnownFolder(kfid, dwKFFlags, pszItem, riid, ppv)
; kfid : GUID* -> "var"
; dwKFFlags : DWORD -> "int"
; pszItem : LPCWSTR optional -> "wstr"
; riid : GUID* -> "var"
; ppv : void** out -> "sptr"
; ※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 SHCreateItemInKnownFolder(GUID* kfid, DWORD dwKFFlags, LPCWSTR pszItem, GUID* riid, void** ppv)
#uselib "SHELL32.dll"
#cfunc global SHCreateItemInKnownFolder "SHCreateItemInKnownFolder" var, int, wstr, var, intptr
; res = SHCreateItemInKnownFolder(kfid, dwKFFlags, pszItem, riid, ppv)
; kfid : GUID* -> "var"
; dwKFFlags : DWORD -> "int"
; pszItem : LPCWSTR optional -> "wstr"
; riid : GUID* -> "var"
; ppv : void** out -> "intptr"
; ※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")
	procSHCreateItemInKnownFolder = shell32.NewProc("SHCreateItemInKnownFolder")
)

// kfid (GUID*), dwKFFlags (DWORD), pszItem (LPCWSTR optional), riid (GUID*), ppv (void** out)
r1, _, err := procSHCreateItemInKnownFolder.Call(
	uintptr(kfid),
	uintptr(dwKFFlags),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszItem))),
	uintptr(riid),
	uintptr(ppv),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SHCreateItemInKnownFolder(
  kfid: PGUID;   // GUID*
  dwKFFlags: DWORD;   // DWORD
  pszItem: PWideChar;   // LPCWSTR optional
  riid: PGUID;   // GUID*
  ppv: Pointer   // void** out
): Integer; stdcall;
  external 'SHELL32.dll' name 'SHCreateItemInKnownFolder';

result := DllCall("SHELL32\SHCreateItemInKnownFolder"
    , "Ptr", kfid   ; GUID*
    , "UInt", dwKFFlags   ; DWORD
    , "WStr", pszItem   ; LPCWSTR optional
    , "Ptr", riid   ; GUID*
    , "Ptr", ppv   ; void** out
    , "Int")   ; return: HRESULT

●SHCreateItemInKnownFolder(kfid, dwKFFlags, pszItem, riid, ppv) = DLL("SHELL32.dll", "int SHCreateItemInKnownFolder(void*, dword, char*, void*, void*)")
# 呼び出し: SHCreateItemInKnownFolder(kfid, dwKFFlags, pszItem, riid, ppv)
# kfid : GUID* -> "void*"
# dwKFFlags : DWORD -> "dword"
# pszItem : LPCWSTR optional -> "char*"
# riid : GUID* -> "void*"
# ppv : void** 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)。