PrjWritePlaceholderInfo

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

HRESULT PrjWritePlaceholderInfo(
    PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT namespaceVirtualizationContext,
    LPCWSTR destinationFileName,
    const PRJ_PLACEHOLDER_INFO* placeholderInfo,
    DWORD placeholderInfoSize
);

<DllImport("PROJECTEDFSLIB.dll", ExactSpelling:=True)>
Public Shared Function PrjWritePlaceholderInfo(
    namespaceVirtualizationContext As IntPtr,   ' PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT
    <MarshalAs(UnmanagedType.LPWStr)> destinationFileName As String,   ' LPCWSTR
    placeholderInfo As IntPtr,   ' PRJ_PLACEHOLDER_INFO*
    placeholderInfoSize As UInteger   ' DWORD
) As Integer
End Function

' namespaceVirtualizationContext : PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT
' destinationFileName : LPCWSTR
' placeholderInfo : PRJ_PLACEHOLDER_INFO*
' placeholderInfoSize : DWORD
Declare PtrSafe Function PrjWritePlaceholderInfo Lib "projectedfslib" ( _
    ByVal namespaceVirtualizationContext As LongPtr, _
    ByVal destinationFileName As LongPtr, _
    ByVal placeholderInfo As LongPtr, _
    ByVal placeholderInfoSize 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

PrjWritePlaceholderInfo = ctypes.windll.projectedfslib.PrjWritePlaceholderInfo
PrjWritePlaceholderInfo.restype = ctypes.c_int
PrjWritePlaceholderInfo.argtypes = [
    wintypes.HANDLE,  # namespaceVirtualizationContext : PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT
    wintypes.LPCWSTR,  # destinationFileName : LPCWSTR
    ctypes.c_void_p,  # placeholderInfo : PRJ_PLACEHOLDER_INFO*
    wintypes.DWORD,  # placeholderInfoSize : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROJECTEDFSLIB.dll')
PrjWritePlaceholderInfo = Fiddle::Function.new(
  lib['PrjWritePlaceholderInfo'],
  [
    Fiddle::TYPE_VOIDP,  # namespaceVirtualizationContext : PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT
    Fiddle::TYPE_VOIDP,  # destinationFileName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # placeholderInfo : PRJ_PLACEHOLDER_INFO*
    -Fiddle::TYPE_INT,  # placeholderInfoSize : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "projectedfslib")]
extern "system" {
    fn PrjWritePlaceholderInfo(
        namespaceVirtualizationContext: *mut core::ffi::c_void,  // PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT
        destinationFileName: *const u16,  // LPCWSTR
        placeholderInfo: *const PRJ_PLACEHOLDER_INFO,  // PRJ_PLACEHOLDER_INFO*
        placeholderInfoSize: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("PROJECTEDFSLIB.dll")]
public static extern int PrjWritePlaceholderInfo(IntPtr namespaceVirtualizationContext, [MarshalAs(UnmanagedType.LPWStr)] string destinationFileName, IntPtr placeholderInfo, uint placeholderInfoSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROJECTEDFSLIB_PrjWritePlaceholderInfo' -Namespace Win32 -PassThru
# $api::PrjWritePlaceholderInfo(namespaceVirtualizationContext, destinationFileName, placeholderInfo, placeholderInfoSize)

#uselib "PROJECTEDFSLIB.dll"
#func global PrjWritePlaceholderInfo "PrjWritePlaceholderInfo" sptr, sptr, sptr, sptr
; PrjWritePlaceholderInfo namespaceVirtualizationContext, destinationFileName, varptr(placeholderInfo), placeholderInfoSize   ; 戻り値は stat
; namespaceVirtualizationContext : PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT -> "sptr"
; destinationFileName : LPCWSTR -> "sptr"
; placeholderInfo : PRJ_PLACEHOLDER_INFO* -> "sptr"
; placeholderInfoSize : DWORD -> "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 "PROJECTEDFSLIB.dll"
#cfunc global PrjWritePlaceholderInfo "PrjWritePlaceholderInfo" sptr, wstr, var, int
; res = PrjWritePlaceholderInfo(namespaceVirtualizationContext, destinationFileName, placeholderInfo, placeholderInfoSize)
; namespaceVirtualizationContext : PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT -> "sptr"
; destinationFileName : LPCWSTR -> "wstr"
; placeholderInfo : PRJ_PLACEHOLDER_INFO* -> "var"
; placeholderInfoSize : DWORD -> "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 PrjWritePlaceholderInfo(PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT namespaceVirtualizationContext, LPCWSTR destinationFileName, PRJ_PLACEHOLDER_INFO* placeholderInfo, DWORD placeholderInfoSize)
#uselib "PROJECTEDFSLIB.dll"
#cfunc global PrjWritePlaceholderInfo "PrjWritePlaceholderInfo" intptr, wstr, var, int
; res = PrjWritePlaceholderInfo(namespaceVirtualizationContext, destinationFileName, placeholderInfo, placeholderInfoSize)
; namespaceVirtualizationContext : PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT -> "intptr"
; destinationFileName : LPCWSTR -> "wstr"
; placeholderInfo : PRJ_PLACEHOLDER_INFO* -> "var"
; placeholderInfoSize : DWORD -> "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 (
	projectedfslib = windows.NewLazySystemDLL("PROJECTEDFSLIB.dll")
	procPrjWritePlaceholderInfo = projectedfslib.NewProc("PrjWritePlaceholderInfo")
)

// namespaceVirtualizationContext (PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT), destinationFileName (LPCWSTR), placeholderInfo (PRJ_PLACEHOLDER_INFO*), placeholderInfoSize (DWORD)
r1, _, err := procPrjWritePlaceholderInfo.Call(
	uintptr(namespaceVirtualizationContext),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(destinationFileName))),
	uintptr(placeholderInfo),
	uintptr(placeholderInfoSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function PrjWritePlaceholderInfo(
  namespaceVirtualizationContext: THandle;   // PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT
  destinationFileName: PWideChar;   // LPCWSTR
  placeholderInfo: Pointer;   // PRJ_PLACEHOLDER_INFO*
  placeholderInfoSize: DWORD   // DWORD
): Integer; stdcall;
  external 'PROJECTEDFSLIB.dll' name 'PrjWritePlaceholderInfo';

result := DllCall("PROJECTEDFSLIB\PrjWritePlaceholderInfo"
    , "Ptr", namespaceVirtualizationContext   ; PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT
    , "WStr", destinationFileName   ; LPCWSTR
    , "Ptr", placeholderInfo   ; PRJ_PLACEHOLDER_INFO*
    , "UInt", placeholderInfoSize   ; DWORD
    , "Int")   ; return: HRESULT

●PrjWritePlaceholderInfo(namespaceVirtualizationContext, destinationFileName, placeholderInfo, placeholderInfoSize) = DLL("PROJECTEDFSLIB.dll", "int PrjWritePlaceholderInfo(void*, char*, void*, dword)")
# 呼び出し: PrjWritePlaceholderInfo(namespaceVirtualizationContext, destinationFileName, placeholderInfo, placeholderInfoSize)
# namespaceVirtualizationContext : PRJ_NAMESPACE_VIRTUALIZATION_CONTEXT -> "void*"
# destinationFileName : LPCWSTR -> "char*"
# placeholderInfo : PRJ_PLACEHOLDER_INFO* -> "void*"
# placeholderInfoSize : DWORD -> "dword"
# 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)。