WSCGetProviderPath

// WS2_32.dll
#include <windows.h>

INT WSCGetProviderPath(
    GUID* lpProviderId,
    LPWSTR lpszProviderDllPath,
    INT* lpProviderDllPathLen,
    INT* lpErrno
);

<DllImport("WS2_32.dll", ExactSpelling:=True)>
Public Shared Function WSCGetProviderPath(
    ByRef lpProviderId As Guid,   ' GUID*
    <MarshalAs(UnmanagedType.LPWStr)> lpszProviderDllPath As System.Text.StringBuilder,   ' LPWSTR out
    ByRef lpProviderDllPathLen As Integer,   ' INT* in/out
    <Out> ByRef lpErrno As Integer   ' INT* out
) As Integer
End Function

' lpProviderId : GUID*
' lpszProviderDllPath : LPWSTR out
' lpProviderDllPathLen : INT* in/out
' lpErrno : INT* out
Declare PtrSafe Function WSCGetProviderPath Lib "ws2_32" ( _
    ByVal lpProviderId As LongPtr, _
    ByVal lpszProviderDllPath As LongPtr, _
    ByRef lpProviderDllPathLen As Long, _
    ByRef lpErrno 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

WSCGetProviderPath = ctypes.windll.ws2_32.WSCGetProviderPath
WSCGetProviderPath.restype = ctypes.c_int
WSCGetProviderPath.argtypes = [
    ctypes.c_void_p,  # lpProviderId : GUID*
    wintypes.LPWSTR,  # lpszProviderDllPath : LPWSTR out
    ctypes.POINTER(ctypes.c_int),  # lpProviderDllPathLen : INT* in/out
    ctypes.POINTER(ctypes.c_int),  # lpErrno : INT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WS2_32.dll')
WSCGetProviderPath = Fiddle::Function.new(
  lib['WSCGetProviderPath'],
  [
    Fiddle::TYPE_VOIDP,  # lpProviderId : GUID*
    Fiddle::TYPE_VOIDP,  # lpszProviderDllPath : LPWSTR out
    Fiddle::TYPE_VOIDP,  # lpProviderDllPathLen : INT* in/out
    Fiddle::TYPE_VOIDP,  # lpErrno : INT* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ws2_32")]
extern "system" {
    fn WSCGetProviderPath(
        lpProviderId: *mut GUID,  // GUID*
        lpszProviderDllPath: *mut u16,  // LPWSTR out
        lpProviderDllPathLen: *mut i32,  // INT* in/out
        lpErrno: *mut i32  // INT* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WS2_32.dll")]
public static extern int WSCGetProviderPath(ref Guid lpProviderId, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpszProviderDllPath, ref int lpProviderDllPathLen, out int lpErrno);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WS2_32_WSCGetProviderPath' -Namespace Win32 -PassThru
# $api::WSCGetProviderPath(lpProviderId, lpszProviderDllPath, lpProviderDllPathLen, lpErrno)

#uselib "WS2_32.dll"
#func global WSCGetProviderPath "WSCGetProviderPath" sptr, sptr, sptr, sptr
; WSCGetProviderPath varptr(lpProviderId), varptr(lpszProviderDllPath), varptr(lpProviderDllPathLen), varptr(lpErrno)   ; 戻り値は stat
; lpProviderId : GUID* -> "sptr"
; lpszProviderDllPath : LPWSTR out -> "sptr"
; lpProviderDllPathLen : INT* in/out -> "sptr"
; lpErrno : INT* 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 "WS2_32.dll"
#cfunc global WSCGetProviderPath "WSCGetProviderPath" var, var, var, var
; res = WSCGetProviderPath(lpProviderId, lpszProviderDllPath, lpProviderDllPathLen, lpErrno)
; lpProviderId : GUID* -> "var"
; lpszProviderDllPath : LPWSTR out -> "var"
; lpProviderDllPathLen : INT* in/out -> "var"
; lpErrno : INT* 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。

; INT WSCGetProviderPath(GUID* lpProviderId, LPWSTR lpszProviderDllPath, INT* lpProviderDllPathLen, INT* lpErrno)
#uselib "WS2_32.dll"
#cfunc global WSCGetProviderPath "WSCGetProviderPath" var, var, var, var
; res = WSCGetProviderPath(lpProviderId, lpszProviderDllPath, lpProviderDllPathLen, lpErrno)
; lpProviderId : GUID* -> "var"
; lpszProviderDllPath : LPWSTR out -> "var"
; lpProviderDllPathLen : INT* in/out -> "var"
; lpErrno : INT* 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 (
	ws2_32 = windows.NewLazySystemDLL("WS2_32.dll")
	procWSCGetProviderPath = ws2_32.NewProc("WSCGetProviderPath")
)

// lpProviderId (GUID*), lpszProviderDllPath (LPWSTR out), lpProviderDllPathLen (INT* in/out), lpErrno (INT* out)
r1, _, err := procWSCGetProviderPath.Call(
	uintptr(lpProviderId),
	uintptr(lpszProviderDllPath),
	uintptr(lpProviderDllPathLen),
	uintptr(lpErrno),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function WSCGetProviderPath(
  lpProviderId: PGUID;   // GUID*
  lpszProviderDllPath: PWideChar;   // LPWSTR out
  lpProviderDllPathLen: Pointer;   // INT* in/out
  lpErrno: Pointer   // INT* out
): Integer; stdcall;
  external 'WS2_32.dll' name 'WSCGetProviderPath';

result := DllCall("WS2_32\WSCGetProviderPath"
    , "Ptr", lpProviderId   ; GUID*
    , "Ptr", lpszProviderDllPath   ; LPWSTR out
    , "Ptr", lpProviderDllPathLen   ; INT* in/out
    , "Ptr", lpErrno   ; INT* out
    , "Int")   ; return: INT

●WSCGetProviderPath(lpProviderId, lpszProviderDllPath, lpProviderDllPathLen, lpErrno) = DLL("WS2_32.dll", "int WSCGetProviderPath(void*, char*, void*, void*)")
# 呼び出し: WSCGetProviderPath(lpProviderId, lpszProviderDllPath, lpProviderDllPathLen, lpErrno)
# lpProviderId : GUID* -> "void*"
# lpszProviderDllPath : LPWSTR out -> "char*"
# lpProviderDllPathLen : INT* in/out -> "void*"
# lpErrno : INT* 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)。