MsiViewGetErrorW

// msi.dll  (Unicode / -W)
#include <windows.h>

MSIDBERROR MsiViewGetErrorW(
    MSIHANDLE hView,
    LPWSTR szColumnNameBuffer,   // optional
    DWORD* pcchBuf   // optional
);

<DllImport("msi.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function MsiViewGetErrorW(
    hView As UInteger,   ' MSIHANDLE
    <MarshalAs(UnmanagedType.LPWStr)> szColumnNameBuffer As System.Text.StringBuilder,   ' LPWSTR optional, out
    pcchBuf As IntPtr   ' DWORD* optional, in/out
) As Integer
End Function

' hView : MSIHANDLE
' szColumnNameBuffer : LPWSTR optional, out
' pcchBuf : DWORD* optional, in/out
Declare PtrSafe Function MsiViewGetErrorW Lib "msi" ( _
    ByVal hView As Long, _
    ByVal szColumnNameBuffer As LongPtr, _
    ByVal pcchBuf As LongPtr) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

MsiViewGetErrorW = ctypes.windll.msi.MsiViewGetErrorW
MsiViewGetErrorW.restype = ctypes.c_int
MsiViewGetErrorW.argtypes = [
    wintypes.DWORD,  # hView : MSIHANDLE
    wintypes.LPWSTR,  # szColumnNameBuffer : LPWSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcchBuf : DWORD* optional, in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiViewGetErrorW = Fiddle::Function.new(
  lib['MsiViewGetErrorW'],
  [
    -Fiddle::TYPE_INT,  # hView : MSIHANDLE
    Fiddle::TYPE_VOIDP,  # szColumnNameBuffer : LPWSTR optional, out
    Fiddle::TYPE_VOIDP,  # pcchBuf : DWORD* optional, in/out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "msi")]
extern "system" {
    fn MsiViewGetErrorW(
        hView: u32,  // MSIHANDLE
        szColumnNameBuffer: *mut u16,  // LPWSTR optional, out
        pcchBuf: *mut u32  // DWORD* optional, in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll", CharSet = CharSet.Unicode)]
public static extern int MsiViewGetErrorW(uint hView, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder szColumnNameBuffer, IntPtr pcchBuf);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiViewGetErrorW' -Namespace Win32 -PassThru
# $api::MsiViewGetErrorW(hView, szColumnNameBuffer, pcchBuf)

#uselib "msi.dll"
#func global MsiViewGetErrorW "MsiViewGetErrorW" wptr, wptr, wptr
; MsiViewGetErrorW hView, varptr(szColumnNameBuffer), varptr(pcchBuf)   ; 戻り値は stat
; hView : MSIHANDLE -> "wptr"
; szColumnNameBuffer : LPWSTR optional, out -> "wptr"
; pcchBuf : DWORD* optional, in/out -> "wptr"
; ※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 "msi.dll"
#cfunc global MsiViewGetErrorW "MsiViewGetErrorW" int, var, var
; res = MsiViewGetErrorW(hView, szColumnNameBuffer, pcchBuf)
; hView : MSIHANDLE -> "int"
; szColumnNameBuffer : LPWSTR optional, out -> "var"
; pcchBuf : DWORD* optional, in/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。

; MSIDBERROR MsiViewGetErrorW(MSIHANDLE hView, LPWSTR szColumnNameBuffer, DWORD* pcchBuf)
#uselib "msi.dll"
#cfunc global MsiViewGetErrorW "MsiViewGetErrorW" int, var, var
; res = MsiViewGetErrorW(hView, szColumnNameBuffer, pcchBuf)
; hView : MSIHANDLE -> "int"
; szColumnNameBuffer : LPWSTR optional, out -> "var"
; pcchBuf : DWORD* optional, in/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 (
	msi = windows.NewLazySystemDLL("msi.dll")
	procMsiViewGetErrorW = msi.NewProc("MsiViewGetErrorW")
)

// hView (MSIHANDLE), szColumnNameBuffer (LPWSTR optional, out), pcchBuf (DWORD* optional, in/out)
r1, _, err := procMsiViewGetErrorW.Call(
	uintptr(hView),
	uintptr(szColumnNameBuffer),
	uintptr(pcchBuf),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // MSIDBERROR

function MsiViewGetErrorW(
  hView: DWORD;   // MSIHANDLE
  szColumnNameBuffer: PWideChar;   // LPWSTR optional, out
  pcchBuf: Pointer   // DWORD* optional, in/out
): Integer; stdcall;
  external 'msi.dll' name 'MsiViewGetErrorW';

result := DllCall("msi\MsiViewGetErrorW"
    , "UInt", hView   ; MSIHANDLE
    , "Ptr", szColumnNameBuffer   ; LPWSTR optional, out
    , "Ptr", pcchBuf   ; DWORD* optional, in/out
    , "Int")   ; return: MSIDBERROR

●MsiViewGetErrorW(hView, szColumnNameBuffer, pcchBuf) = DLL("msi.dll", "int MsiViewGetErrorW(dword, char*, void*)")
# 呼び出し: MsiViewGetErrorW(hView, szColumnNameBuffer, pcchBuf)
# hView : MSIHANDLE -> "dword"
# szColumnNameBuffer : LPWSTR optional, out -> "char*"
# pcchBuf : DWORD* optional, in/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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。