OpenPrivateNamespaceA

// KERNEL32.dll  (ANSI / -A)
#include <windows.h>

HANDLE OpenPrivateNamespaceA(
    void* lpBoundaryDescriptor,
    LPCSTR lpAliasPrefix
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function OpenPrivateNamespaceA(
    lpBoundaryDescriptor As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPStr)> lpAliasPrefix As String   ' LPCSTR
) As IntPtr
End Function

' lpBoundaryDescriptor : void*
' lpAliasPrefix : LPCSTR
Declare PtrSafe Function OpenPrivateNamespaceA Lib "kernel32" ( _
    ByVal lpBoundaryDescriptor As LongPtr, _
    ByVal lpAliasPrefix As String) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

OpenPrivateNamespaceA = ctypes.windll.kernel32.OpenPrivateNamespaceA
OpenPrivateNamespaceA.restype = ctypes.c_void_p
OpenPrivateNamespaceA.argtypes = [
    ctypes.POINTER(None),  # lpBoundaryDescriptor : void*
    wintypes.LPCSTR,  # lpAliasPrefix : LPCSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
OpenPrivateNamespaceA = Fiddle::Function.new(
  lib['OpenPrivateNamespaceA'],
  [
    Fiddle::TYPE_VOIDP,  # lpBoundaryDescriptor : void*
    Fiddle::TYPE_VOIDP,  # lpAliasPrefix : LPCSTR
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "kernel32")]
extern "system" {
    fn OpenPrivateNamespaceA(
        lpBoundaryDescriptor: *mut (),  // void*
        lpAliasPrefix: *const u8  // LPCSTR
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi)]
public static extern IntPtr OpenPrivateNamespaceA(IntPtr lpBoundaryDescriptor, [MarshalAs(UnmanagedType.LPStr)] string lpAliasPrefix);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_OpenPrivateNamespaceA' -Namespace Win32 -PassThru
# $api::OpenPrivateNamespaceA(lpBoundaryDescriptor, lpAliasPrefix)

#uselib "KERNEL32.dll"
#func global OpenPrivateNamespaceA "OpenPrivateNamespaceA" sptr, sptr
; OpenPrivateNamespaceA lpBoundaryDescriptor, lpAliasPrefix   ; 戻り値は stat
; lpBoundaryDescriptor : void* -> "sptr"
; lpAliasPrefix : 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 "KERNEL32.dll"
#cfunc global OpenPrivateNamespaceA "OpenPrivateNamespaceA" sptr, str
; res = OpenPrivateNamespaceA(lpBoundaryDescriptor, lpAliasPrefix)
; lpBoundaryDescriptor : void* -> "sptr"
; lpAliasPrefix : LPCSTR -> "str"

; HANDLE OpenPrivateNamespaceA(void* lpBoundaryDescriptor, LPCSTR lpAliasPrefix)
#uselib "KERNEL32.dll"
#cfunc global OpenPrivateNamespaceA "OpenPrivateNamespaceA" intptr, str
; res = OpenPrivateNamespaceA(lpBoundaryDescriptor, lpAliasPrefix)
; lpBoundaryDescriptor : void* -> "intptr"
; lpAliasPrefix : LPCSTR -> "str"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procOpenPrivateNamespaceA = kernel32.NewProc("OpenPrivateNamespaceA")
)

// lpBoundaryDescriptor (void*), lpAliasPrefix (LPCSTR)
r1, _, err := procOpenPrivateNamespaceA.Call(
	uintptr(lpBoundaryDescriptor),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpAliasPrefix))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function OpenPrivateNamespaceA(
  lpBoundaryDescriptor: Pointer;   // void*
  lpAliasPrefix: PAnsiChar   // LPCSTR
): THandle; stdcall;
  external 'KERNEL32.dll' name 'OpenPrivateNamespaceA';

result := DllCall("KERNEL32\OpenPrivateNamespaceA"
    , "Ptr", lpBoundaryDescriptor   ; void*
    , "AStr", lpAliasPrefix   ; LPCSTR
    , "Ptr")   ; return: HANDLE

●OpenPrivateNamespaceA(lpBoundaryDescriptor, lpAliasPrefix) = DLL("KERNEL32.dll", "void* OpenPrivateNamespaceA(void*, char*)")
# 呼び出し: OpenPrivateNamespaceA(lpBoundaryDescriptor, lpAliasPrefix)
# lpBoundaryDescriptor : void* -> "void*"
# lpAliasPrefix : 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)。