phoneSetButtonInfoW

// TAPI32.dll  (Unicode / -W)
#include <windows.h>

INT phoneSetButtonInfoW(
    DWORD hPhone,
    DWORD dwButtonLampID,
    const PHONEBUTTONINFO* lpButtonInfo
);

<DllImport("TAPI32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function phoneSetButtonInfoW(
    hPhone As UInteger,   ' DWORD
    dwButtonLampID As UInteger,   ' DWORD
    lpButtonInfo As IntPtr   ' PHONEBUTTONINFO*
) As Integer
End Function

' hPhone : DWORD
' dwButtonLampID : DWORD
' lpButtonInfo : PHONEBUTTONINFO*
Declare PtrSafe Function phoneSetButtonInfoW Lib "tapi32" ( _
    ByVal hPhone As Long, _
    ByVal dwButtonLampID As Long, _
    ByVal lpButtonInfo As LongPtr) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

phoneSetButtonInfoW = ctypes.windll.tapi32.phoneSetButtonInfoW
phoneSetButtonInfoW.restype = ctypes.c_int
phoneSetButtonInfoW.argtypes = [
    wintypes.DWORD,  # hPhone : DWORD
    wintypes.DWORD,  # dwButtonLampID : DWORD
    ctypes.c_void_p,  # lpButtonInfo : PHONEBUTTONINFO*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('TAPI32.dll')
phoneSetButtonInfoW = Fiddle::Function.new(
  lib['phoneSetButtonInfoW'],
  [
    -Fiddle::TYPE_INT,  # hPhone : DWORD
    -Fiddle::TYPE_INT,  # dwButtonLampID : DWORD
    Fiddle::TYPE_VOIDP,  # lpButtonInfo : PHONEBUTTONINFO*
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "tapi32")]
extern "system" {
    fn phoneSetButtonInfoW(
        hPhone: u32,  // DWORD
        dwButtonLampID: u32,  // DWORD
        lpButtonInfo: *const PHONEBUTTONINFO  // PHONEBUTTONINFO*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("TAPI32.dll", CharSet = CharSet.Unicode)]
public static extern int phoneSetButtonInfoW(uint hPhone, uint dwButtonLampID, IntPtr lpButtonInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'TAPI32_phoneSetButtonInfoW' -Namespace Win32 -PassThru
# $api::phoneSetButtonInfoW(hPhone, dwButtonLampID, lpButtonInfo)

#uselib "TAPI32.dll"
#func global phoneSetButtonInfoW "phoneSetButtonInfoW" wptr, wptr, wptr
; phoneSetButtonInfoW hPhone, dwButtonLampID, varptr(lpButtonInfo)   ; 戻り値は stat
; hPhone : DWORD -> "wptr"
; dwButtonLampID : DWORD -> "wptr"
; lpButtonInfo : PHONEBUTTONINFO* -> "wptr"
; ※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 "TAPI32.dll"
#cfunc global phoneSetButtonInfoW "phoneSetButtonInfoW" int, int, var
; res = phoneSetButtonInfoW(hPhone, dwButtonLampID, lpButtonInfo)
; hPhone : DWORD -> "int"
; dwButtonLampID : DWORD -> "int"
; lpButtonInfo : PHONEBUTTONINFO* -> "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。

; INT phoneSetButtonInfoW(DWORD hPhone, DWORD dwButtonLampID, PHONEBUTTONINFO* lpButtonInfo)
#uselib "TAPI32.dll"
#cfunc global phoneSetButtonInfoW "phoneSetButtonInfoW" int, int, var
; res = phoneSetButtonInfoW(hPhone, dwButtonLampID, lpButtonInfo)
; hPhone : DWORD -> "int"
; dwButtonLampID : DWORD -> "int"
; lpButtonInfo : PHONEBUTTONINFO* -> "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 (
	tapi32 = windows.NewLazySystemDLL("TAPI32.dll")
	procphoneSetButtonInfoW = tapi32.NewProc("phoneSetButtonInfoW")
)

// hPhone (DWORD), dwButtonLampID (DWORD), lpButtonInfo (PHONEBUTTONINFO*)
r1, _, err := procphoneSetButtonInfoW.Call(
	uintptr(hPhone),
	uintptr(dwButtonLampID),
	uintptr(lpButtonInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function phoneSetButtonInfoW(
  hPhone: DWORD;   // DWORD
  dwButtonLampID: DWORD;   // DWORD
  lpButtonInfo: Pointer   // PHONEBUTTONINFO*
): Integer; stdcall;
  external 'TAPI32.dll' name 'phoneSetButtonInfoW';

result := DllCall("TAPI32\phoneSetButtonInfoW"
    , "UInt", hPhone   ; DWORD
    , "UInt", dwButtonLampID   ; DWORD
    , "Ptr", lpButtonInfo   ; PHONEBUTTONINFO*
    , "Int")   ; return: INT

●phoneSetButtonInfoW(hPhone, dwButtonLampID, lpButtonInfo) = DLL("TAPI32.dll", "int phoneSetButtonInfoW(dword, dword, void*)")
# 呼び出し: phoneSetButtonInfoW(hPhone, dwButtonLampID, lpButtonInfo)
# hPhone : DWORD -> "dword"
# dwButtonLampID : DWORD -> "dword"
# lpButtonInfo : PHONEBUTTONINFO* -> "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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。