GetCurrentApplicationUserModelId

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

WIN32_ERROR GetCurrentApplicationUserModelId(
    DWORD* applicationUserModelIdLength,
    LPWSTR applicationUserModelId   // optional
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function GetCurrentApplicationUserModelId(
    ByRef applicationUserModelIdLength As UInteger,   ' DWORD* in/out
    <MarshalAs(UnmanagedType.LPWStr)> applicationUserModelId As System.Text.StringBuilder   ' LPWSTR optional, out
) As UInteger
End Function

' applicationUserModelIdLength : DWORD* in/out
' applicationUserModelId : LPWSTR optional, out
Declare PtrSafe Function GetCurrentApplicationUserModelId Lib "kernel32" ( _
    ByRef applicationUserModelIdLength As Long, _
    ByVal applicationUserModelId 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

GetCurrentApplicationUserModelId = ctypes.windll.kernel32.GetCurrentApplicationUserModelId
GetCurrentApplicationUserModelId.restype = wintypes.DWORD
GetCurrentApplicationUserModelId.argtypes = [
    ctypes.POINTER(wintypes.DWORD),  # applicationUserModelIdLength : DWORD* in/out
    wintypes.LPWSTR,  # applicationUserModelId : LPWSTR optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetCurrentApplicationUserModelId = Fiddle::Function.new(
  lib['GetCurrentApplicationUserModelId'],
  [
    Fiddle::TYPE_VOIDP,  # applicationUserModelIdLength : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # applicationUserModelId : LPWSTR optional, out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetCurrentApplicationUserModelId(
        applicationUserModelIdLength: *mut u32,  // DWORD* in/out
        applicationUserModelId: *mut u16  // LPWSTR optional, out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll")]
public static extern uint GetCurrentApplicationUserModelId(ref uint applicationUserModelIdLength, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder applicationUserModelId);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetCurrentApplicationUserModelId' -Namespace Win32 -PassThru
# $api::GetCurrentApplicationUserModelId(applicationUserModelIdLength, applicationUserModelId)

#uselib "KERNEL32.dll"
#func global GetCurrentApplicationUserModelId "GetCurrentApplicationUserModelId" sptr, sptr
; GetCurrentApplicationUserModelId varptr(applicationUserModelIdLength), varptr(applicationUserModelId)   ; 戻り値は stat
; applicationUserModelIdLength : DWORD* in/out -> "sptr"
; applicationUserModelId : 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 GetCurrentApplicationUserModelId "GetCurrentApplicationUserModelId" var, var
; res = GetCurrentApplicationUserModelId(applicationUserModelIdLength, applicationUserModelId)
; applicationUserModelIdLength : DWORD* in/out -> "var"
; applicationUserModelId : 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 GetCurrentApplicationUserModelId(DWORD* applicationUserModelIdLength, LPWSTR applicationUserModelId)
#uselib "KERNEL32.dll"
#cfunc global GetCurrentApplicationUserModelId "GetCurrentApplicationUserModelId" var, var
; res = GetCurrentApplicationUserModelId(applicationUserModelIdLength, applicationUserModelId)
; applicationUserModelIdLength : DWORD* in/out -> "var"
; applicationUserModelId : 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")
	procGetCurrentApplicationUserModelId = kernel32.NewProc("GetCurrentApplicationUserModelId")
)

// applicationUserModelIdLength (DWORD* in/out), applicationUserModelId (LPWSTR optional, out)
r1, _, err := procGetCurrentApplicationUserModelId.Call(
	uintptr(applicationUserModelIdLength),
	uintptr(applicationUserModelId),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function GetCurrentApplicationUserModelId(
  applicationUserModelIdLength: Pointer;   // DWORD* in/out
  applicationUserModelId: PWideChar   // LPWSTR optional, out
): DWORD; stdcall;
  external 'KERNEL32.dll' name 'GetCurrentApplicationUserModelId';

result := DllCall("KERNEL32\GetCurrentApplicationUserModelId"
    , "Ptr", applicationUserModelIdLength   ; DWORD* in/out
    , "Ptr", applicationUserModelId   ; LPWSTR optional, out
    , "UInt")   ; return: WIN32_ERROR

●GetCurrentApplicationUserModelId(applicationUserModelIdLength, applicationUserModelId) = DLL("KERNEL32.dll", "dword GetCurrentApplicationUserModelId(void*, char*)")
# 呼び出し: GetCurrentApplicationUserModelId(applicationUserModelIdLength, applicationUserModelId)
# applicationUserModelIdLength : DWORD* in/out -> "void*"
# applicationUserModelId : 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)。