CommandLineToArgvW

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

LPWSTR* CommandLineToArgvW(
    LPCWSTR lpCmdLine,
    INT* pNumArgs
);

<DllImport("SHELL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CommandLineToArgvW(
    <MarshalAs(UnmanagedType.LPWStr)> lpCmdLine As String,   ' LPCWSTR
    <Out> ByRef pNumArgs As Integer   ' INT* out
) As IntPtr
End Function

' lpCmdLine : LPCWSTR
' pNumArgs : INT* out
Declare PtrSafe Function CommandLineToArgvW Lib "shell32" ( _
    ByVal lpCmdLine As LongPtr, _
    ByRef pNumArgs As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CommandLineToArgvW = ctypes.windll.shell32.CommandLineToArgvW
CommandLineToArgvW.restype = wintypes.LPWSTR
CommandLineToArgvW.argtypes = [
    wintypes.LPCWSTR,  # lpCmdLine : LPCWSTR
    ctypes.POINTER(ctypes.c_int),  # pNumArgs : INT* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
CommandLineToArgvW = Fiddle::Function.new(
  lib['CommandLineToArgvW'],
  [
    Fiddle::TYPE_VOIDP,  # lpCmdLine : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pNumArgs : INT* out
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "shell32")]
extern "system" {
    fn CommandLineToArgvW(
        lpCmdLine: *const u16,  // LPCWSTR
        pNumArgs: *mut i32  // INT* out
    ) -> *mut *mut u16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll", SetLastError = true)]
public static extern IntPtr CommandLineToArgvW([MarshalAs(UnmanagedType.LPWStr)] string lpCmdLine, out int pNumArgs);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_CommandLineToArgvW' -Namespace Win32 -PassThru
# $api::CommandLineToArgvW(lpCmdLine, pNumArgs)

#uselib "SHELL32.dll"
#func global CommandLineToArgvW "CommandLineToArgvW" sptr, sptr
; CommandLineToArgvW lpCmdLine, varptr(pNumArgs)   ; 戻り値は stat
; lpCmdLine : LPCWSTR -> "sptr"
; pNumArgs : INT* 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 CommandLineToArgvW "CommandLineToArgvW" wstr, var
; res = CommandLineToArgvW(lpCmdLine, pNumArgs)
; lpCmdLine : LPCWSTR -> "wstr"
; pNumArgs : INT* out -> "var"
; ※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。

; LPWSTR* CommandLineToArgvW(LPCWSTR lpCmdLine, INT* pNumArgs)
#uselib "SHELL32.dll"
#cfunc global CommandLineToArgvW "CommandLineToArgvW" wstr, var
; res = CommandLineToArgvW(lpCmdLine, pNumArgs)
; lpCmdLine : LPCWSTR -> "wstr"
; pNumArgs : INT* out -> "var"
; ※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")
	procCommandLineToArgvW = shell32.NewProc("CommandLineToArgvW")
)

// lpCmdLine (LPCWSTR), pNumArgs (INT* out)
r1, _, err := procCommandLineToArgvW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpCmdLine))),
	uintptr(pNumArgs),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LPWSTR*

function CommandLineToArgvW(
  lpCmdLine: PWideChar;   // LPCWSTR
  pNumArgs: Pointer   // INT* out
): PWideChar; stdcall;
  external 'SHELL32.dll' name 'CommandLineToArgvW';

result := DllCall("SHELL32\CommandLineToArgvW"
    , "WStr", lpCmdLine   ; LPCWSTR
    , "Ptr", pNumArgs   ; INT* out
    , "Ptr")   ; return: LPWSTR*

●CommandLineToArgvW(lpCmdLine, pNumArgs) = DLL("SHELL32.dll", "void* CommandLineToArgvW(char*, void*)")
# 呼び出し: CommandLineToArgvW(lpCmdLine, pNumArgs)
# lpCmdLine : LPCWSTR -> "char*"
# pNumArgs : INT* 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)。