GetPackageFullName

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

WIN32_ERROR GetPackageFullName(
    HANDLE hProcess,
    DWORD* packageFullNameLength,
    LPWSTR packageFullName   // optional
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function GetPackageFullName(
    hProcess As IntPtr,   ' HANDLE
    ByRef packageFullNameLength As UInteger,   ' DWORD* in/out
    <MarshalAs(UnmanagedType.LPWStr)> packageFullName As System.Text.StringBuilder   ' LPWSTR optional, out
) As UInteger
End Function

' hProcess : HANDLE
' packageFullNameLength : DWORD* in/out
' packageFullName : LPWSTR optional, out
Declare PtrSafe Function GetPackageFullName Lib "kernel32" ( _
    ByVal hProcess As LongPtr, _
    ByRef packageFullNameLength As Long, _
    ByVal packageFullName 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

GetPackageFullName = ctypes.windll.kernel32.GetPackageFullName
GetPackageFullName.restype = wintypes.DWORD
GetPackageFullName.argtypes = [
    wintypes.HANDLE,  # hProcess : HANDLE
    ctypes.POINTER(wintypes.DWORD),  # packageFullNameLength : DWORD* in/out
    wintypes.LPWSTR,  # packageFullName : LPWSTR optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetPackageFullName = Fiddle::Function.new(
  lib['GetPackageFullName'],
  [
    Fiddle::TYPE_VOIDP,  # hProcess : HANDLE
    Fiddle::TYPE_VOIDP,  # packageFullNameLength : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # packageFullName : LPWSTR optional, out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetPackageFullName(
        hProcess: *mut core::ffi::c_void,  // HANDLE
        packageFullNameLength: *mut u32,  // DWORD* in/out
        packageFullName: *mut u16  // LPWSTR optional, out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll")]
public static extern uint GetPackageFullName(IntPtr hProcess, ref uint packageFullNameLength, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder packageFullName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetPackageFullName' -Namespace Win32 -PassThru
# $api::GetPackageFullName(hProcess, packageFullNameLength, packageFullName)

#uselib "KERNEL32.dll"
#func global GetPackageFullName "GetPackageFullName" sptr, sptr, sptr
; GetPackageFullName hProcess, varptr(packageFullNameLength), varptr(packageFullName)   ; 戻り値は stat
; hProcess : HANDLE -> "sptr"
; packageFullNameLength : DWORD* in/out -> "sptr"
; packageFullName : LPWSTR 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 GetPackageFullName "GetPackageFullName" sptr, var, var
; res = GetPackageFullName(hProcess, packageFullNameLength, packageFullName)
; hProcess : HANDLE -> "sptr"
; packageFullNameLength : DWORD* in/out -> "var"
; packageFullName : LPWSTR 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。

; WIN32_ERROR GetPackageFullName(HANDLE hProcess, DWORD* packageFullNameLength, LPWSTR packageFullName)
#uselib "KERNEL32.dll"
#cfunc global GetPackageFullName "GetPackageFullName" intptr, var, var
; res = GetPackageFullName(hProcess, packageFullNameLength, packageFullName)
; hProcess : HANDLE -> "intptr"
; packageFullNameLength : DWORD* in/out -> "var"
; packageFullName : LPWSTR 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")
	procGetPackageFullName = kernel32.NewProc("GetPackageFullName")
)

// hProcess (HANDLE), packageFullNameLength (DWORD* in/out), packageFullName (LPWSTR optional, out)
r1, _, err := procGetPackageFullName.Call(
	uintptr(hProcess),
	uintptr(packageFullNameLength),
	uintptr(packageFullName),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function GetPackageFullName(
  hProcess: THandle;   // HANDLE
  packageFullNameLength: Pointer;   // DWORD* in/out
  packageFullName: PWideChar   // LPWSTR optional, out
): DWORD; stdcall;
  external 'KERNEL32.dll' name 'GetPackageFullName';

result := DllCall("KERNEL32\GetPackageFullName"
    , "Ptr", hProcess   ; HANDLE
    , "Ptr", packageFullNameLength   ; DWORD* in/out
    , "Ptr", packageFullName   ; LPWSTR optional, out
    , "UInt")   ; return: WIN32_ERROR

●GetPackageFullName(hProcess, packageFullNameLength, packageFullName) = DLL("KERNEL32.dll", "dword GetPackageFullName(void*, void*, char*)")
# 呼び出し: GetPackageFullName(hProcess, packageFullNameLength, packageFullName)
# hProcess : HANDLE -> "void*"
# packageFullNameLength : DWORD* in/out -> "void*"
# packageFullName : LPWSTR optional, out -> "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)。