GetCurrentPackageInfo3

// KERNEL32.dll
#include <windows.h>

HRESULT GetCurrentPackageInfo3(
    DWORD flags,
    PackageInfo3Type packageInfoType,
    DWORD* bufferLength,
    void* buffer,   // optional
    DWORD* count   // optional
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function GetCurrentPackageInfo3(
    flags As UInteger,   ' DWORD
    packageInfoType As Integer,   ' PackageInfo3Type
    ByRef bufferLength As UInteger,   ' DWORD* in/out
    buffer As IntPtr,   ' void* optional, out
    count As IntPtr   ' DWORD* optional, out
) As Integer
End Function

' flags : DWORD
' packageInfoType : PackageInfo3Type
' bufferLength : DWORD* in/out
' buffer : void* optional, out
' count : DWORD* optional, out
Declare PtrSafe Function GetCurrentPackageInfo3 Lib "kernel32" ( _
    ByVal flags As Long, _
    ByVal packageInfoType As Long, _
    ByRef bufferLength As Long, _
    ByVal buffer As LongPtr, _
    ByVal count 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

GetCurrentPackageInfo3 = ctypes.windll.kernel32.GetCurrentPackageInfo3
GetCurrentPackageInfo3.restype = ctypes.c_int
GetCurrentPackageInfo3.argtypes = [
    wintypes.DWORD,  # flags : DWORD
    ctypes.c_int,  # packageInfoType : PackageInfo3Type
    ctypes.POINTER(wintypes.DWORD),  # bufferLength : DWORD* in/out
    ctypes.POINTER(None),  # buffer : void* optional, out
    ctypes.POINTER(wintypes.DWORD),  # count : DWORD* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetCurrentPackageInfo3 = Fiddle::Function.new(
  lib['GetCurrentPackageInfo3'],
  [
    -Fiddle::TYPE_INT,  # flags : DWORD
    Fiddle::TYPE_INT,  # packageInfoType : PackageInfo3Type
    Fiddle::TYPE_VOIDP,  # bufferLength : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # buffer : void* optional, out
    Fiddle::TYPE_VOIDP,  # count : DWORD* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetCurrentPackageInfo3(
        flags: u32,  // DWORD
        packageInfoType: i32,  // PackageInfo3Type
        bufferLength: *mut u32,  // DWORD* in/out
        buffer: *mut (),  // void* optional, out
        count: *mut u32  // DWORD* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll")]
public static extern int GetCurrentPackageInfo3(uint flags, int packageInfoType, ref uint bufferLength, IntPtr buffer, IntPtr count);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetCurrentPackageInfo3' -Namespace Win32 -PassThru
# $api::GetCurrentPackageInfo3(flags, packageInfoType, bufferLength, buffer, count)

#uselib "KERNEL32.dll"
#func global GetCurrentPackageInfo3 "GetCurrentPackageInfo3" sptr, sptr, sptr, sptr, sptr
; GetCurrentPackageInfo3 flags, packageInfoType, varptr(bufferLength), buffer, varptr(count)   ; 戻り値は stat
; flags : DWORD -> "sptr"
; packageInfoType : PackageInfo3Type -> "sptr"
; bufferLength : DWORD* in/out -> "sptr"
; buffer : void* optional, out -> "sptr"
; count : DWORD* optional, 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 "KERNEL32.dll"
#cfunc global GetCurrentPackageInfo3 "GetCurrentPackageInfo3" int, int, var, sptr, var
; res = GetCurrentPackageInfo3(flags, packageInfoType, bufferLength, buffer, count)
; flags : DWORD -> "int"
; packageInfoType : PackageInfo3Type -> "int"
; bufferLength : DWORD* in/out -> "var"
; buffer : void* optional, out -> "sptr"
; count : DWORD* optional, 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。

; HRESULT GetCurrentPackageInfo3(DWORD flags, PackageInfo3Type packageInfoType, DWORD* bufferLength, void* buffer, DWORD* count)
#uselib "KERNEL32.dll"
#cfunc global GetCurrentPackageInfo3 "GetCurrentPackageInfo3" int, int, var, intptr, var
; res = GetCurrentPackageInfo3(flags, packageInfoType, bufferLength, buffer, count)
; flags : DWORD -> "int"
; packageInfoType : PackageInfo3Type -> "int"
; bufferLength : DWORD* in/out -> "var"
; buffer : void* optional, out -> "intptr"
; count : DWORD* optional, 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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetCurrentPackageInfo3 = kernel32.NewProc("GetCurrentPackageInfo3")
)

// flags (DWORD), packageInfoType (PackageInfo3Type), bufferLength (DWORD* in/out), buffer (void* optional, out), count (DWORD* optional, out)
r1, _, err := procGetCurrentPackageInfo3.Call(
	uintptr(flags),
	uintptr(packageInfoType),
	uintptr(bufferLength),
	uintptr(buffer),
	uintptr(count),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function GetCurrentPackageInfo3(
  flags: DWORD;   // DWORD
  packageInfoType: Integer;   // PackageInfo3Type
  bufferLength: Pointer;   // DWORD* in/out
  buffer: Pointer;   // void* optional, out
  count: Pointer   // DWORD* optional, out
): Integer; stdcall;
  external 'KERNEL32.dll' name 'GetCurrentPackageInfo3';

result := DllCall("KERNEL32\GetCurrentPackageInfo3"
    , "UInt", flags   ; DWORD
    , "Int", packageInfoType   ; PackageInfo3Type
    , "Ptr", bufferLength   ; DWORD* in/out
    , "Ptr", buffer   ; void* optional, out
    , "Ptr", count   ; DWORD* optional, out
    , "Int")   ; return: HRESULT

●GetCurrentPackageInfo3(flags, packageInfoType, bufferLength, buffer, count) = DLL("KERNEL32.dll", "int GetCurrentPackageInfo3(dword, int, void*, void*, void*)")
# 呼び出し: GetCurrentPackageInfo3(flags, packageInfoType, bufferLength, buffer, count)
# flags : DWORD -> "dword"
# packageInfoType : PackageInfo3Type -> "int"
# bufferLength : DWORD* in/out -> "void*"
# buffer : void* optional, out -> "void*"
# count : DWORD* optional, 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)。