EcEnumNextSubscription

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

BOOL EcEnumNextSubscription(
    INT_PTR SubscriptionEnum,
    DWORD SubscriptionNameBufferSize,
    LPWSTR SubscriptionNameBuffer,   // optional
    DWORD* SubscriptionNameBufferUsed
);

<DllImport("WecApi.dll", ExactSpelling:=True)>
Public Shared Function EcEnumNextSubscription(
    SubscriptionEnum As IntPtr,   ' INT_PTR
    SubscriptionNameBufferSize As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> SubscriptionNameBuffer As System.Text.StringBuilder,   ' LPWSTR optional, out
    <Out> ByRef SubscriptionNameBufferUsed As UInteger   ' DWORD* out
) As Boolean
End Function

' SubscriptionEnum : INT_PTR
' SubscriptionNameBufferSize : DWORD
' SubscriptionNameBuffer : LPWSTR optional, out
' SubscriptionNameBufferUsed : DWORD* out
Declare PtrSafe Function EcEnumNextSubscription Lib "wecapi" ( _
    ByVal SubscriptionEnum As LongPtr, _
    ByVal SubscriptionNameBufferSize As Long, _
    ByVal SubscriptionNameBuffer As LongPtr, _
    ByRef SubscriptionNameBufferUsed As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

EcEnumNextSubscription = ctypes.windll.wecapi.EcEnumNextSubscription
EcEnumNextSubscription.restype = wintypes.BOOL
EcEnumNextSubscription.argtypes = [
    ctypes.c_ssize_t,  # SubscriptionEnum : INT_PTR
    wintypes.DWORD,  # SubscriptionNameBufferSize : DWORD
    wintypes.LPWSTR,  # SubscriptionNameBuffer : LPWSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # SubscriptionNameBufferUsed : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WecApi.dll')
EcEnumNextSubscription = Fiddle::Function.new(
  lib['EcEnumNextSubscription'],
  [
    Fiddle::TYPE_INTPTR_T,  # SubscriptionEnum : INT_PTR
    -Fiddle::TYPE_INT,  # SubscriptionNameBufferSize : DWORD
    Fiddle::TYPE_VOIDP,  # SubscriptionNameBuffer : LPWSTR optional, out
    Fiddle::TYPE_VOIDP,  # SubscriptionNameBufferUsed : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "wecapi")]
extern "system" {
    fn EcEnumNextSubscription(
        SubscriptionEnum: isize,  // INT_PTR
        SubscriptionNameBufferSize: u32,  // DWORD
        SubscriptionNameBuffer: *mut u16,  // LPWSTR optional, out
        SubscriptionNameBufferUsed: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WecApi.dll")]
public static extern bool EcEnumNextSubscription(IntPtr SubscriptionEnum, uint SubscriptionNameBufferSize, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder SubscriptionNameBuffer, out uint SubscriptionNameBufferUsed);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WecApi_EcEnumNextSubscription' -Namespace Win32 -PassThru
# $api::EcEnumNextSubscription(SubscriptionEnum, SubscriptionNameBufferSize, SubscriptionNameBuffer, SubscriptionNameBufferUsed)

#uselib "WecApi.dll"
#func global EcEnumNextSubscription "EcEnumNextSubscription" sptr, sptr, sptr, sptr
; EcEnumNextSubscription SubscriptionEnum, SubscriptionNameBufferSize, varptr(SubscriptionNameBuffer), varptr(SubscriptionNameBufferUsed)   ; 戻り値は stat
; SubscriptionEnum : INT_PTR -> "sptr"
; SubscriptionNameBufferSize : DWORD -> "sptr"
; SubscriptionNameBuffer : LPWSTR optional, out -> "sptr"
; SubscriptionNameBufferUsed : DWORD* 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 "WecApi.dll"
#cfunc global EcEnumNextSubscription "EcEnumNextSubscription" sptr, int, var, var
; res = EcEnumNextSubscription(SubscriptionEnum, SubscriptionNameBufferSize, SubscriptionNameBuffer, SubscriptionNameBufferUsed)
; SubscriptionEnum : INT_PTR -> "sptr"
; SubscriptionNameBufferSize : DWORD -> "int"
; SubscriptionNameBuffer : LPWSTR optional, out -> "var"
; SubscriptionNameBufferUsed : DWORD* 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。

; BOOL EcEnumNextSubscription(INT_PTR SubscriptionEnum, DWORD SubscriptionNameBufferSize, LPWSTR SubscriptionNameBuffer, DWORD* SubscriptionNameBufferUsed)
#uselib "WecApi.dll"
#cfunc global EcEnumNextSubscription "EcEnumNextSubscription" intptr, int, var, var
; res = EcEnumNextSubscription(SubscriptionEnum, SubscriptionNameBufferSize, SubscriptionNameBuffer, SubscriptionNameBufferUsed)
; SubscriptionEnum : INT_PTR -> "intptr"
; SubscriptionNameBufferSize : DWORD -> "int"
; SubscriptionNameBuffer : LPWSTR optional, out -> "var"
; SubscriptionNameBufferUsed : DWORD* 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 (
	wecapi = windows.NewLazySystemDLL("WecApi.dll")
	procEcEnumNextSubscription = wecapi.NewProc("EcEnumNextSubscription")
)

// SubscriptionEnum (INT_PTR), SubscriptionNameBufferSize (DWORD), SubscriptionNameBuffer (LPWSTR optional, out), SubscriptionNameBufferUsed (DWORD* out)
r1, _, err := procEcEnumNextSubscription.Call(
	uintptr(SubscriptionEnum),
	uintptr(SubscriptionNameBufferSize),
	uintptr(SubscriptionNameBuffer),
	uintptr(SubscriptionNameBufferUsed),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function EcEnumNextSubscription(
  SubscriptionEnum: NativeInt;   // INT_PTR
  SubscriptionNameBufferSize: DWORD;   // DWORD
  SubscriptionNameBuffer: PWideChar;   // LPWSTR optional, out
  SubscriptionNameBufferUsed: Pointer   // DWORD* out
): BOOL; stdcall;
  external 'WecApi.dll' name 'EcEnumNextSubscription';

result := DllCall("WecApi\EcEnumNextSubscription"
    , "Ptr", SubscriptionEnum   ; INT_PTR
    , "UInt", SubscriptionNameBufferSize   ; DWORD
    , "Ptr", SubscriptionNameBuffer   ; LPWSTR optional, out
    , "Ptr", SubscriptionNameBufferUsed   ; DWORD* out
    , "Int")   ; return: BOOL

●EcEnumNextSubscription(SubscriptionEnum, SubscriptionNameBufferSize, SubscriptionNameBuffer, SubscriptionNameBufferUsed) = DLL("WecApi.dll", "bool EcEnumNextSubscription(int, dword, char*, void*)")
# 呼び出し: EcEnumNextSubscription(SubscriptionEnum, SubscriptionNameBufferSize, SubscriptionNameBuffer, SubscriptionNameBufferUsed)
# SubscriptionEnum : INT_PTR -> "int"
# SubscriptionNameBufferSize : DWORD -> "dword"
# SubscriptionNameBuffer : LPWSTR optional, out -> "char*"
# SubscriptionNameBufferUsed : DWORD* 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)。