CfRegisterSyncRoot

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

HRESULT CfRegisterSyncRoot(
    LPCWSTR SyncRootPath,
    const CF_SYNC_REGISTRATION* Registration,
    const CF_SYNC_POLICIES* Policies,
    CF_REGISTER_FLAGS RegisterFlags
);

<DllImport("cldapi.dll", ExactSpelling:=True)>
Public Shared Function CfRegisterSyncRoot(
    <MarshalAs(UnmanagedType.LPWStr)> SyncRootPath As String,   ' LPCWSTR
    Registration As IntPtr,   ' CF_SYNC_REGISTRATION*
    Policies As IntPtr,   ' CF_SYNC_POLICIES*
    RegisterFlags As Integer   ' CF_REGISTER_FLAGS
) As Integer
End Function

' SyncRootPath : LPCWSTR
' Registration : CF_SYNC_REGISTRATION*
' Policies : CF_SYNC_POLICIES*
' RegisterFlags : CF_REGISTER_FLAGS
Declare PtrSafe Function CfRegisterSyncRoot Lib "cldapi" ( _
    ByVal SyncRootPath As LongPtr, _
    ByVal Registration As LongPtr, _
    ByVal Policies As LongPtr, _
    ByVal RegisterFlags 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

CfRegisterSyncRoot = ctypes.windll.cldapi.CfRegisterSyncRoot
CfRegisterSyncRoot.restype = ctypes.c_int
CfRegisterSyncRoot.argtypes = [
    wintypes.LPCWSTR,  # SyncRootPath : LPCWSTR
    ctypes.c_void_p,  # Registration : CF_SYNC_REGISTRATION*
    ctypes.c_void_p,  # Policies : CF_SYNC_POLICIES*
    ctypes.c_int,  # RegisterFlags : CF_REGISTER_FLAGS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('cldapi.dll')
CfRegisterSyncRoot = Fiddle::Function.new(
  lib['CfRegisterSyncRoot'],
  [
    Fiddle::TYPE_VOIDP,  # SyncRootPath : LPCWSTR
    Fiddle::TYPE_VOIDP,  # Registration : CF_SYNC_REGISTRATION*
    Fiddle::TYPE_VOIDP,  # Policies : CF_SYNC_POLICIES*
    Fiddle::TYPE_INT,  # RegisterFlags : CF_REGISTER_FLAGS
  ],
  Fiddle::TYPE_INT)

#[link(name = "cldapi")]
extern "system" {
    fn CfRegisterSyncRoot(
        SyncRootPath: *const u16,  // LPCWSTR
        Registration: *const CF_SYNC_REGISTRATION,  // CF_SYNC_REGISTRATION*
        Policies: *const CF_SYNC_POLICIES,  // CF_SYNC_POLICIES*
        RegisterFlags: i32  // CF_REGISTER_FLAGS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("cldapi.dll")]
public static extern int CfRegisterSyncRoot([MarshalAs(UnmanagedType.LPWStr)] string SyncRootPath, IntPtr Registration, IntPtr Policies, int RegisterFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'cldapi_CfRegisterSyncRoot' -Namespace Win32 -PassThru
# $api::CfRegisterSyncRoot(SyncRootPath, Registration, Policies, RegisterFlags)

#uselib "cldapi.dll"
#func global CfRegisterSyncRoot "CfRegisterSyncRoot" sptr, sptr, sptr, sptr
; CfRegisterSyncRoot SyncRootPath, varptr(Registration), varptr(Policies), RegisterFlags   ; 戻り値は stat
; SyncRootPath : LPCWSTR -> "sptr"
; Registration : CF_SYNC_REGISTRATION* -> "sptr"
; Policies : CF_SYNC_POLICIES* -> "sptr"
; RegisterFlags : CF_REGISTER_FLAGS -> "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 "cldapi.dll"
#cfunc global CfRegisterSyncRoot "CfRegisterSyncRoot" wstr, var, var, int
; res = CfRegisterSyncRoot(SyncRootPath, Registration, Policies, RegisterFlags)
; SyncRootPath : LPCWSTR -> "wstr"
; Registration : CF_SYNC_REGISTRATION* -> "var"
; Policies : CF_SYNC_POLICIES* -> "var"
; RegisterFlags : CF_REGISTER_FLAGS -> "int"
; ※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 CfRegisterSyncRoot(LPCWSTR SyncRootPath, CF_SYNC_REGISTRATION* Registration, CF_SYNC_POLICIES* Policies, CF_REGISTER_FLAGS RegisterFlags)
#uselib "cldapi.dll"
#cfunc global CfRegisterSyncRoot "CfRegisterSyncRoot" wstr, var, var, int
; res = CfRegisterSyncRoot(SyncRootPath, Registration, Policies, RegisterFlags)
; SyncRootPath : LPCWSTR -> "wstr"
; Registration : CF_SYNC_REGISTRATION* -> "var"
; Policies : CF_SYNC_POLICIES* -> "var"
; RegisterFlags : CF_REGISTER_FLAGS -> "int"
; ※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 (
	cldapi = windows.NewLazySystemDLL("cldapi.dll")
	procCfRegisterSyncRoot = cldapi.NewProc("CfRegisterSyncRoot")
)

// SyncRootPath (LPCWSTR), Registration (CF_SYNC_REGISTRATION*), Policies (CF_SYNC_POLICIES*), RegisterFlags (CF_REGISTER_FLAGS)
r1, _, err := procCfRegisterSyncRoot.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(SyncRootPath))),
	uintptr(Registration),
	uintptr(Policies),
	uintptr(RegisterFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CfRegisterSyncRoot(
  SyncRootPath: PWideChar;   // LPCWSTR
  Registration: Pointer;   // CF_SYNC_REGISTRATION*
  Policies: Pointer;   // CF_SYNC_POLICIES*
  RegisterFlags: Integer   // CF_REGISTER_FLAGS
): Integer; stdcall;
  external 'cldapi.dll' name 'CfRegisterSyncRoot';

result := DllCall("cldapi\CfRegisterSyncRoot"
    , "WStr", SyncRootPath   ; LPCWSTR
    , "Ptr", Registration   ; CF_SYNC_REGISTRATION*
    , "Ptr", Policies   ; CF_SYNC_POLICIES*
    , "Int", RegisterFlags   ; CF_REGISTER_FLAGS
    , "Int")   ; return: HRESULT

●CfRegisterSyncRoot(SyncRootPath, Registration, Policies, RegisterFlags) = DLL("cldapi.dll", "int CfRegisterSyncRoot(char*, void*, void*, int)")
# 呼び出し: CfRegisterSyncRoot(SyncRootPath, Registration, Policies, RegisterFlags)
# SyncRootPath : LPCWSTR -> "char*"
# Registration : CF_SYNC_REGISTRATION* -> "void*"
# Policies : CF_SYNC_POLICIES* -> "void*"
# RegisterFlags : CF_REGISTER_FLAGS -> "int"
# 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)。