CoInternetParseIUri

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

HRESULT CoInternetParseIUri(
    IUri* pIUri,
    PARSEACTION ParseAction,
    DWORD dwFlags,
    LPWSTR pwzResult,
    DWORD cchResult,
    DWORD* pcchResult,
    UINT_PTR dwReserved   // optional
);

<DllImport("urlmon.dll", ExactSpelling:=True)>
Public Shared Function CoInternetParseIUri(
    pIUri As IntPtr,   ' IUri*
    ParseAction As Integer,   ' PARSEACTION
    dwFlags As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> pwzResult As System.Text.StringBuilder,   ' LPWSTR out
    cchResult As UInteger,   ' DWORD
    <Out> ByRef pcchResult As UInteger,   ' DWORD* out
    dwReserved As UIntPtr   ' UINT_PTR optional
) As Integer
End Function

' pIUri : IUri*
' ParseAction : PARSEACTION
' dwFlags : DWORD
' pwzResult : LPWSTR out
' cchResult : DWORD
' pcchResult : DWORD* out
' dwReserved : UINT_PTR optional
Declare PtrSafe Function CoInternetParseIUri Lib "urlmon" ( _
    ByVal pIUri As LongPtr, _
    ByVal ParseAction As Long, _
    ByVal dwFlags As Long, _
    ByVal pwzResult As LongPtr, _
    ByVal cchResult As Long, _
    ByRef pcchResult As Long, _
    ByVal dwReserved 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

CoInternetParseIUri = ctypes.windll.urlmon.CoInternetParseIUri
CoInternetParseIUri.restype = ctypes.c_int
CoInternetParseIUri.argtypes = [
    ctypes.c_void_p,  # pIUri : IUri*
    ctypes.c_int,  # ParseAction : PARSEACTION
    wintypes.DWORD,  # dwFlags : DWORD
    wintypes.LPWSTR,  # pwzResult : LPWSTR out
    wintypes.DWORD,  # cchResult : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pcchResult : DWORD* out
    ctypes.c_size_t,  # dwReserved : UINT_PTR optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('urlmon.dll')
CoInternetParseIUri = Fiddle::Function.new(
  lib['CoInternetParseIUri'],
  [
    Fiddle::TYPE_VOIDP,  # pIUri : IUri*
    Fiddle::TYPE_INT,  # ParseAction : PARSEACTION
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pwzResult : LPWSTR out
    -Fiddle::TYPE_INT,  # cchResult : DWORD
    Fiddle::TYPE_VOIDP,  # pcchResult : DWORD* out
    Fiddle::TYPE_UINTPTR_T,  # dwReserved : UINT_PTR optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "urlmon")]
extern "system" {
    fn CoInternetParseIUri(
        pIUri: *mut core::ffi::c_void,  // IUri*
        ParseAction: i32,  // PARSEACTION
        dwFlags: u32,  // DWORD
        pwzResult: *mut u16,  // LPWSTR out
        cchResult: u32,  // DWORD
        pcchResult: *mut u32,  // DWORD* out
        dwReserved: usize  // UINT_PTR optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("urlmon.dll")]
public static extern int CoInternetParseIUri(IntPtr pIUri, int ParseAction, uint dwFlags, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder pwzResult, uint cchResult, out uint pcchResult, UIntPtr dwReserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'urlmon_CoInternetParseIUri' -Namespace Win32 -PassThru
# $api::CoInternetParseIUri(pIUri, ParseAction, dwFlags, pwzResult, cchResult, pcchResult, dwReserved)

#uselib "urlmon.dll"
#func global CoInternetParseIUri "CoInternetParseIUri" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; CoInternetParseIUri pIUri, ParseAction, dwFlags, varptr(pwzResult), cchResult, varptr(pcchResult), dwReserved   ; 戻り値は stat
; pIUri : IUri* -> "sptr"
; ParseAction : PARSEACTION -> "sptr"
; dwFlags : DWORD -> "sptr"
; pwzResult : LPWSTR out -> "sptr"
; cchResult : DWORD -> "sptr"
; pcchResult : DWORD* out -> "sptr"
; dwReserved : UINT_PTR optional -> "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 "urlmon.dll"
#cfunc global CoInternetParseIUri "CoInternetParseIUri" sptr, int, int, var, int, var, sptr
; res = CoInternetParseIUri(pIUri, ParseAction, dwFlags, pwzResult, cchResult, pcchResult, dwReserved)
; pIUri : IUri* -> "sptr"
; ParseAction : PARSEACTION -> "int"
; dwFlags : DWORD -> "int"
; pwzResult : LPWSTR out -> "var"
; cchResult : DWORD -> "int"
; pcchResult : DWORD* out -> "var"
; dwReserved : UINT_PTR optional -> "sptr"
; ※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 CoInternetParseIUri(IUri* pIUri, PARSEACTION ParseAction, DWORD dwFlags, LPWSTR pwzResult, DWORD cchResult, DWORD* pcchResult, UINT_PTR dwReserved)
#uselib "urlmon.dll"
#cfunc global CoInternetParseIUri "CoInternetParseIUri" intptr, int, int, var, int, var, intptr
; res = CoInternetParseIUri(pIUri, ParseAction, dwFlags, pwzResult, cchResult, pcchResult, dwReserved)
; pIUri : IUri* -> "intptr"
; ParseAction : PARSEACTION -> "int"
; dwFlags : DWORD -> "int"
; pwzResult : LPWSTR out -> "var"
; cchResult : DWORD -> "int"
; pcchResult : DWORD* out -> "var"
; dwReserved : UINT_PTR optional -> "intptr"
; ※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 (
	urlmon = windows.NewLazySystemDLL("urlmon.dll")
	procCoInternetParseIUri = urlmon.NewProc("CoInternetParseIUri")
)

// pIUri (IUri*), ParseAction (PARSEACTION), dwFlags (DWORD), pwzResult (LPWSTR out), cchResult (DWORD), pcchResult (DWORD* out), dwReserved (UINT_PTR optional)
r1, _, err := procCoInternetParseIUri.Call(
	uintptr(pIUri),
	uintptr(ParseAction),
	uintptr(dwFlags),
	uintptr(pwzResult),
	uintptr(cchResult),
	uintptr(pcchResult),
	uintptr(dwReserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CoInternetParseIUri(
  pIUri: Pointer;   // IUri*
  ParseAction: Integer;   // PARSEACTION
  dwFlags: DWORD;   // DWORD
  pwzResult: PWideChar;   // LPWSTR out
  cchResult: DWORD;   // DWORD
  pcchResult: Pointer;   // DWORD* out
  dwReserved: NativeUInt   // UINT_PTR optional
): Integer; stdcall;
  external 'urlmon.dll' name 'CoInternetParseIUri';

result := DllCall("urlmon\CoInternetParseIUri"
    , "Ptr", pIUri   ; IUri*
    , "Int", ParseAction   ; PARSEACTION
    , "UInt", dwFlags   ; DWORD
    , "Ptr", pwzResult   ; LPWSTR out
    , "UInt", cchResult   ; DWORD
    , "Ptr", pcchResult   ; DWORD* out
    , "UPtr", dwReserved   ; UINT_PTR optional
    , "Int")   ; return: HRESULT

●CoInternetParseIUri(pIUri, ParseAction, dwFlags, pwzResult, cchResult, pcchResult, dwReserved) = DLL("urlmon.dll", "int CoInternetParseIUri(void*, int, dword, char*, dword, void*, int)")
# 呼び出し: CoInternetParseIUri(pIUri, ParseAction, dwFlags, pwzResult, cchResult, pcchResult, dwReserved)
# pIUri : IUri* -> "void*"
# ParseAction : PARSEACTION -> "int"
# dwFlags : DWORD -> "dword"
# pwzResult : LPWSTR out -> "char*"
# cchResult : DWORD -> "dword"
# pcchResult : DWORD* out -> "void*"
# dwReserved : UINT_PTR optional -> "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)。