WslConfigureDistribution

// Api-ms-win-wsl-api-l1-1-0.dll
#include <windows.h>

HRESULT WslConfigureDistribution(
    LPCWSTR distributionName,
    DWORD defaultUID,
    WSL_DISTRIBUTION_FLAGS wslDistributionFlags
);

<DllImport("Api-ms-win-wsl-api-l1-1-0.dll", ExactSpelling:=True)>
Public Shared Function WslConfigureDistribution(
    <MarshalAs(UnmanagedType.LPWStr)> distributionName As String,   ' LPCWSTR
    defaultUID As UInteger,   ' DWORD
    wslDistributionFlags As Integer   ' WSL_DISTRIBUTION_FLAGS
) As Integer
End Function

' distributionName : LPCWSTR
' defaultUID : DWORD
' wslDistributionFlags : WSL_DISTRIBUTION_FLAGS
Declare PtrSafe Function WslConfigureDistribution Lib "api-ms-win-wsl-api-l1-1-0" ( _
    ByVal distributionName As LongPtr, _
    ByVal defaultUID As Long, _
    ByVal wslDistributionFlags 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

WslConfigureDistribution = ctypes.windll.LoadLibrary("Api-ms-win-wsl-api-l1-1-0.dll").WslConfigureDistribution
WslConfigureDistribution.restype = ctypes.c_int
WslConfigureDistribution.argtypes = [
    wintypes.LPCWSTR,  # distributionName : LPCWSTR
    wintypes.DWORD,  # defaultUID : DWORD
    ctypes.c_int,  # wslDistributionFlags : WSL_DISTRIBUTION_FLAGS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('Api-ms-win-wsl-api-l1-1-0.dll')
WslConfigureDistribution = Fiddle::Function.new(
  lib['WslConfigureDistribution'],
  [
    Fiddle::TYPE_VOIDP,  # distributionName : LPCWSTR
    -Fiddle::TYPE_INT,  # defaultUID : DWORD
    Fiddle::TYPE_INT,  # wslDistributionFlags : WSL_DISTRIBUTION_FLAGS
  ],
  Fiddle::TYPE_INT)

#[link(name = "api-ms-win-wsl-api-l1-1-0")]
extern "system" {
    fn WslConfigureDistribution(
        distributionName: *const u16,  // LPCWSTR
        defaultUID: u32,  // DWORD
        wslDistributionFlags: i32  // WSL_DISTRIBUTION_FLAGS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("Api-ms-win-wsl-api-l1-1-0.dll")]
public static extern int WslConfigureDistribution([MarshalAs(UnmanagedType.LPWStr)] string distributionName, uint defaultUID, int wslDistributionFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'Api-ms-win-wsl-api-l1-1-0_WslConfigureDistribution' -Namespace Win32 -PassThru
# $api::WslConfigureDistribution(distributionName, defaultUID, wslDistributionFlags)

#uselib "Api-ms-win-wsl-api-l1-1-0.dll"
#func global WslConfigureDistribution "WslConfigureDistribution" sptr, sptr, sptr
; WslConfigureDistribution distributionName, defaultUID, wslDistributionFlags   ; 戻り値は stat
; distributionName : LPCWSTR -> "sptr"
; defaultUID : DWORD -> "sptr"
; wslDistributionFlags : WSL_DISTRIBUTION_FLAGS -> "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 "Api-ms-win-wsl-api-l1-1-0.dll"
#cfunc global WslConfigureDistribution "WslConfigureDistribution" wstr, int, int
; res = WslConfigureDistribution(distributionName, defaultUID, wslDistributionFlags)
; distributionName : LPCWSTR -> "wstr"
; defaultUID : DWORD -> "int"
; wslDistributionFlags : WSL_DISTRIBUTION_FLAGS -> "int"

; HRESULT WslConfigureDistribution(LPCWSTR distributionName, DWORD defaultUID, WSL_DISTRIBUTION_FLAGS wslDistributionFlags)
#uselib "Api-ms-win-wsl-api-l1-1-0.dll"
#cfunc global WslConfigureDistribution "WslConfigureDistribution" wstr, int, int
; res = WslConfigureDistribution(distributionName, defaultUID, wslDistributionFlags)
; distributionName : LPCWSTR -> "wstr"
; defaultUID : DWORD -> "int"
; wslDistributionFlags : WSL_DISTRIBUTION_FLAGS -> "int"

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

var (
	api_ms_win_wsl_api_l1_1_0 = windows.NewLazySystemDLL("Api-ms-win-wsl-api-l1-1-0.dll")
	procWslConfigureDistribution = api_ms_win_wsl_api_l1_1_0.NewProc("WslConfigureDistribution")
)

// distributionName (LPCWSTR), defaultUID (DWORD), wslDistributionFlags (WSL_DISTRIBUTION_FLAGS)
r1, _, err := procWslConfigureDistribution.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(distributionName))),
	uintptr(defaultUID),
	uintptr(wslDistributionFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WslConfigureDistribution(
  distributionName: PWideChar;   // LPCWSTR
  defaultUID: DWORD;   // DWORD
  wslDistributionFlags: Integer   // WSL_DISTRIBUTION_FLAGS
): Integer; stdcall;
  external 'Api-ms-win-wsl-api-l1-1-0.dll' name 'WslConfigureDistribution';

result := DllCall("Api-ms-win-wsl-api-l1-1-0\WslConfigureDistribution"
    , "WStr", distributionName   ; LPCWSTR
    , "UInt", defaultUID   ; DWORD
    , "Int", wslDistributionFlags   ; WSL_DISTRIBUTION_FLAGS
    , "Int")   ; return: HRESULT

●WslConfigureDistribution(distributionName, defaultUID, wslDistributionFlags) = DLL("Api-ms-win-wsl-api-l1-1-0.dll", "int WslConfigureDistribution(char*, dword, int)")
# 呼び出し: WslConfigureDistribution(distributionName, defaultUID, wslDistributionFlags)
# distributionName : LPCWSTR -> "char*"
# defaultUID : DWORD -> "dword"
# wslDistributionFlags : WSL_DISTRIBUTION_FLAGS -> "int"
# 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)。