PeerDistClientOpenContent

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

DWORD PeerDistClientOpenContent(
    INT_PTR hPeerDist,
    PEERDIST_CONTENT_TAG* pContentTag,
    HANDLE hCompletionPort,   // optional
    UINT_PTR ulCompletionKey,   // optional
    INT_PTR* phContentHandle
);

<DllImport("PeerDist.dll", ExactSpelling:=True)>
Public Shared Function PeerDistClientOpenContent(
    hPeerDist As IntPtr,   ' INT_PTR
    pContentTag As IntPtr,   ' PEERDIST_CONTENT_TAG*
    hCompletionPort As IntPtr,   ' HANDLE optional
    ulCompletionKey As UIntPtr,   ' UINT_PTR optional
    <Out> ByRef phContentHandle As IntPtr   ' INT_PTR* out
) As UInteger
End Function

' hPeerDist : INT_PTR
' pContentTag : PEERDIST_CONTENT_TAG*
' hCompletionPort : HANDLE optional
' ulCompletionKey : UINT_PTR optional
' phContentHandle : INT_PTR* out
Declare PtrSafe Function PeerDistClientOpenContent Lib "peerdist" ( _
    ByVal hPeerDist As LongPtr, _
    ByVal pContentTag As LongPtr, _
    ByVal hCompletionPort As LongPtr, _
    ByVal ulCompletionKey As LongPtr, _
    ByRef phContentHandle 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

PeerDistClientOpenContent = ctypes.windll.peerdist.PeerDistClientOpenContent
PeerDistClientOpenContent.restype = wintypes.DWORD
PeerDistClientOpenContent.argtypes = [
    ctypes.c_ssize_t,  # hPeerDist : INT_PTR
    ctypes.c_void_p,  # pContentTag : PEERDIST_CONTENT_TAG*
    wintypes.HANDLE,  # hCompletionPort : HANDLE optional
    ctypes.c_size_t,  # ulCompletionKey : UINT_PTR optional
    ctypes.POINTER(ctypes.c_ssize_t),  # phContentHandle : INT_PTR* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PeerDist.dll')
PeerDistClientOpenContent = Fiddle::Function.new(
  lib['PeerDistClientOpenContent'],
  [
    Fiddle::TYPE_INTPTR_T,  # hPeerDist : INT_PTR
    Fiddle::TYPE_VOIDP,  # pContentTag : PEERDIST_CONTENT_TAG*
    Fiddle::TYPE_VOIDP,  # hCompletionPort : HANDLE optional
    Fiddle::TYPE_UINTPTR_T,  # ulCompletionKey : UINT_PTR optional
    Fiddle::TYPE_VOIDP,  # phContentHandle : INT_PTR* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "peerdist")]
extern "system" {
    fn PeerDistClientOpenContent(
        hPeerDist: isize,  // INT_PTR
        pContentTag: *mut PEERDIST_CONTENT_TAG,  // PEERDIST_CONTENT_TAG*
        hCompletionPort: *mut core::ffi::c_void,  // HANDLE optional
        ulCompletionKey: usize,  // UINT_PTR optional
        phContentHandle: *mut isize  // INT_PTR* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("PeerDist.dll")]
public static extern uint PeerDistClientOpenContent(IntPtr hPeerDist, IntPtr pContentTag, IntPtr hCompletionPort, UIntPtr ulCompletionKey, out IntPtr phContentHandle);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PeerDist_PeerDistClientOpenContent' -Namespace Win32 -PassThru
# $api::PeerDistClientOpenContent(hPeerDist, pContentTag, hCompletionPort, ulCompletionKey, phContentHandle)

#uselib "PeerDist.dll"
#func global PeerDistClientOpenContent "PeerDistClientOpenContent" sptr, sptr, sptr, sptr, sptr
; PeerDistClientOpenContent hPeerDist, varptr(pContentTag), hCompletionPort, ulCompletionKey, varptr(phContentHandle)   ; 戻り値は stat
; hPeerDist : INT_PTR -> "sptr"
; pContentTag : PEERDIST_CONTENT_TAG* -> "sptr"
; hCompletionPort : HANDLE optional -> "sptr"
; ulCompletionKey : UINT_PTR optional -> "sptr"
; phContentHandle : INT_PTR* 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 PeerDistClientOpenContent "PeerDistClientOpenContent" sptr, var, sptr, sptr, var
; res = PeerDistClientOpenContent(hPeerDist, pContentTag, hCompletionPort, ulCompletionKey, phContentHandle)
; hPeerDist : INT_PTR -> "sptr"
; pContentTag : PEERDIST_CONTENT_TAG* -> "var"
; hCompletionPort : HANDLE optional -> "sptr"
; ulCompletionKey : UINT_PTR optional -> "sptr"
; phContentHandle : INT_PTR* 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。

; DWORD PeerDistClientOpenContent(INT_PTR hPeerDist, PEERDIST_CONTENT_TAG* pContentTag, HANDLE hCompletionPort, UINT_PTR ulCompletionKey, INT_PTR* phContentHandle)
#uselib "PeerDist.dll"
#cfunc global PeerDistClientOpenContent "PeerDistClientOpenContent" intptr, var, intptr, intptr, var
; res = PeerDistClientOpenContent(hPeerDist, pContentTag, hCompletionPort, ulCompletionKey, phContentHandle)
; hPeerDist : INT_PTR -> "intptr"
; pContentTag : PEERDIST_CONTENT_TAG* -> "var"
; hCompletionPort : HANDLE optional -> "intptr"
; ulCompletionKey : UINT_PTR optional -> "intptr"
; phContentHandle : INT_PTR* 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 (
	peerdist = windows.NewLazySystemDLL("PeerDist.dll")
	procPeerDistClientOpenContent = peerdist.NewProc("PeerDistClientOpenContent")
)

// hPeerDist (INT_PTR), pContentTag (PEERDIST_CONTENT_TAG*), hCompletionPort (HANDLE optional), ulCompletionKey (UINT_PTR optional), phContentHandle (INT_PTR* out)
r1, _, err := procPeerDistClientOpenContent.Call(
	uintptr(hPeerDist),
	uintptr(pContentTag),
	uintptr(hCompletionPort),
	uintptr(ulCompletionKey),
	uintptr(phContentHandle),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PeerDistClientOpenContent(
  hPeerDist: NativeInt;   // INT_PTR
  pContentTag: Pointer;   // PEERDIST_CONTENT_TAG*
  hCompletionPort: THandle;   // HANDLE optional
  ulCompletionKey: NativeUInt;   // UINT_PTR optional
  phContentHandle: Pointer   // INT_PTR* out
): DWORD; stdcall;
  external 'PeerDist.dll' name 'PeerDistClientOpenContent';

result := DllCall("PeerDist\PeerDistClientOpenContent"
    , "Ptr", hPeerDist   ; INT_PTR
    , "Ptr", pContentTag   ; PEERDIST_CONTENT_TAG*
    , "Ptr", hCompletionPort   ; HANDLE optional
    , "UPtr", ulCompletionKey   ; UINT_PTR optional
    , "Ptr", phContentHandle   ; INT_PTR* out
    , "UInt")   ; return: DWORD

●PeerDistClientOpenContent(hPeerDist, pContentTag, hCompletionPort, ulCompletionKey, phContentHandle) = DLL("PeerDist.dll", "dword PeerDistClientOpenContent(int, void*, void*, int, void*)")
# 呼び出し: PeerDistClientOpenContent(hPeerDist, pContentTag, hCompletionPort, ulCompletionKey, phContentHandle)
# hPeerDist : INT_PTR -> "int"
# pContentTag : PEERDIST_CONTENT_TAG* -> "void*"
# hCompletionPort : HANDLE optional -> "void*"
# ulCompletionKey : UINT_PTR optional -> "int"
# phContentHandle : INT_PTR* 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)。