PeerDistClientGetInformationByHandle

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

DWORD PeerDistClientGetInformationByHandle(
    INT_PTR hPeerDist,
    INT_PTR hContentHandle,
    PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS PeerDistClientInfoClass,
    DWORD dwBufferSize,
    void* lpInformation
);

<DllImport("PeerDist.dll", ExactSpelling:=True)>
Public Shared Function PeerDistClientGetInformationByHandle(
    hPeerDist As IntPtr,   ' INT_PTR
    hContentHandle As IntPtr,   ' INT_PTR
    PeerDistClientInfoClass As Integer,   ' PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS
    dwBufferSize As UInteger,   ' DWORD
    lpInformation As IntPtr   ' void* out
) As UInteger
End Function

' hPeerDist : INT_PTR
' hContentHandle : INT_PTR
' PeerDistClientInfoClass : PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS
' dwBufferSize : DWORD
' lpInformation : void* out
Declare PtrSafe Function PeerDistClientGetInformationByHandle Lib "peerdist" ( _
    ByVal hPeerDist As LongPtr, _
    ByVal hContentHandle As LongPtr, _
    ByVal PeerDistClientInfoClass As Long, _
    ByVal dwBufferSize As Long, _
    ByVal lpInformation 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

PeerDistClientGetInformationByHandle = ctypes.windll.peerdist.PeerDistClientGetInformationByHandle
PeerDistClientGetInformationByHandle.restype = wintypes.DWORD
PeerDistClientGetInformationByHandle.argtypes = [
    ctypes.c_ssize_t,  # hPeerDist : INT_PTR
    ctypes.c_ssize_t,  # hContentHandle : INT_PTR
    ctypes.c_int,  # PeerDistClientInfoClass : PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS
    wintypes.DWORD,  # dwBufferSize : DWORD
    ctypes.POINTER(None),  # lpInformation : void* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PeerDist.dll')
PeerDistClientGetInformationByHandle = Fiddle::Function.new(
  lib['PeerDistClientGetInformationByHandle'],
  [
    Fiddle::TYPE_INTPTR_T,  # hPeerDist : INT_PTR
    Fiddle::TYPE_INTPTR_T,  # hContentHandle : INT_PTR
    Fiddle::TYPE_INT,  # PeerDistClientInfoClass : PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS
    -Fiddle::TYPE_INT,  # dwBufferSize : DWORD
    Fiddle::TYPE_VOIDP,  # lpInformation : void* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "peerdist")]
extern "system" {
    fn PeerDistClientGetInformationByHandle(
        hPeerDist: isize,  // INT_PTR
        hContentHandle: isize,  // INT_PTR
        PeerDistClientInfoClass: i32,  // PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS
        dwBufferSize: u32,  // DWORD
        lpInformation: *mut ()  // void* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("PeerDist.dll")]
public static extern uint PeerDistClientGetInformationByHandle(IntPtr hPeerDist, IntPtr hContentHandle, int PeerDistClientInfoClass, uint dwBufferSize, IntPtr lpInformation);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PeerDist_PeerDistClientGetInformationByHandle' -Namespace Win32 -PassThru
# $api::PeerDistClientGetInformationByHandle(hPeerDist, hContentHandle, PeerDistClientInfoClass, dwBufferSize, lpInformation)

#uselib "PeerDist.dll"
#func global PeerDistClientGetInformationByHandle "PeerDistClientGetInformationByHandle" sptr, sptr, sptr, sptr, sptr
; PeerDistClientGetInformationByHandle hPeerDist, hContentHandle, PeerDistClientInfoClass, dwBufferSize, lpInformation   ; 戻り値は stat
; hPeerDist : INT_PTR -> "sptr"
; hContentHandle : INT_PTR -> "sptr"
; PeerDistClientInfoClass : PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS -> "sptr"
; dwBufferSize : DWORD -> "sptr"
; lpInformation : void* 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 "PeerDist.dll"
#cfunc global PeerDistClientGetInformationByHandle "PeerDistClientGetInformationByHandle" sptr, sptr, int, int, sptr
; res = PeerDistClientGetInformationByHandle(hPeerDist, hContentHandle, PeerDistClientInfoClass, dwBufferSize, lpInformation)
; hPeerDist : INT_PTR -> "sptr"
; hContentHandle : INT_PTR -> "sptr"
; PeerDistClientInfoClass : PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS -> "int"
; dwBufferSize : DWORD -> "int"
; lpInformation : void* out -> "sptr"

; DWORD PeerDistClientGetInformationByHandle(INT_PTR hPeerDist, INT_PTR hContentHandle, PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS PeerDistClientInfoClass, DWORD dwBufferSize, void* lpInformation)
#uselib "PeerDist.dll"
#cfunc global PeerDistClientGetInformationByHandle "PeerDistClientGetInformationByHandle" intptr, intptr, int, int, intptr
; res = PeerDistClientGetInformationByHandle(hPeerDist, hContentHandle, PeerDistClientInfoClass, dwBufferSize, lpInformation)
; hPeerDist : INT_PTR -> "intptr"
; hContentHandle : INT_PTR -> "intptr"
; PeerDistClientInfoClass : PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS -> "int"
; dwBufferSize : DWORD -> "int"
; lpInformation : void* out -> "intptr"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	peerdist = windows.NewLazySystemDLL("PeerDist.dll")
	procPeerDistClientGetInformationByHandle = peerdist.NewProc("PeerDistClientGetInformationByHandle")
)

// hPeerDist (INT_PTR), hContentHandle (INT_PTR), PeerDistClientInfoClass (PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS), dwBufferSize (DWORD), lpInformation (void* out)
r1, _, err := procPeerDistClientGetInformationByHandle.Call(
	uintptr(hPeerDist),
	uintptr(hContentHandle),
	uintptr(PeerDistClientInfoClass),
	uintptr(dwBufferSize),
	uintptr(lpInformation),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PeerDistClientGetInformationByHandle(
  hPeerDist: NativeInt;   // INT_PTR
  hContentHandle: NativeInt;   // INT_PTR
  PeerDistClientInfoClass: Integer;   // PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS
  dwBufferSize: DWORD;   // DWORD
  lpInformation: Pointer   // void* out
): DWORD; stdcall;
  external 'PeerDist.dll' name 'PeerDistClientGetInformationByHandle';

result := DllCall("PeerDist\PeerDistClientGetInformationByHandle"
    , "Ptr", hPeerDist   ; INT_PTR
    , "Ptr", hContentHandle   ; INT_PTR
    , "Int", PeerDistClientInfoClass   ; PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS
    , "UInt", dwBufferSize   ; DWORD
    , "Ptr", lpInformation   ; void* out
    , "UInt")   ; return: DWORD

●PeerDistClientGetInformationByHandle(hPeerDist, hContentHandle, PeerDistClientInfoClass, dwBufferSize, lpInformation) = DLL("PeerDist.dll", "dword PeerDistClientGetInformationByHandle(int, int, int, dword, void*)")
# 呼び出し: PeerDistClientGetInformationByHandle(hPeerDist, hContentHandle, PeerDistClientInfoClass, dwBufferSize, lpInformation)
# hPeerDist : INT_PTR -> "int"
# hContentHandle : INT_PTR -> "int"
# PeerDistClientInfoClass : PEERDIST_CLIENT_INFO_BY_HANDLE_CLASS -> "int"
# dwBufferSize : DWORD -> "dword"
# lpInformation : void* 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)。