GetColorDirectoryW

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

BOOL GetColorDirectoryW(
    LPCWSTR pMachineName,   // optional
    LPWSTR pBuffer,   // optional
    DWORD* pdwSize
);

<DllImport("mscms.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function GetColorDirectoryW(
    <MarshalAs(UnmanagedType.LPWStr)> pMachineName As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> pBuffer As System.Text.StringBuilder,   ' LPWSTR optional, out
    ByRef pdwSize As UInteger   ' DWORD* in/out
) As Boolean
End Function

' pMachineName : LPCWSTR optional
' pBuffer : LPWSTR optional, out
' pdwSize : DWORD* in/out
Declare PtrSafe Function GetColorDirectoryW Lib "mscms" ( _
    ByVal pMachineName As LongPtr, _
    ByVal pBuffer As LongPtr, _
    ByRef pdwSize As Long) 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

GetColorDirectoryW = ctypes.windll.mscms.GetColorDirectoryW
GetColorDirectoryW.restype = wintypes.BOOL
GetColorDirectoryW.argtypes = [
    wintypes.LPCWSTR,  # pMachineName : LPCWSTR optional
    wintypes.LPWSTR,  # pBuffer : LPWSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pdwSize : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('mscms.dll')
GetColorDirectoryW = Fiddle::Function.new(
  lib['GetColorDirectoryW'],
  [
    Fiddle::TYPE_VOIDP,  # pMachineName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pBuffer : LPWSTR optional, out
    Fiddle::TYPE_VOIDP,  # pdwSize : DWORD* in/out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "mscms")]
extern "system" {
    fn GetColorDirectoryW(
        pMachineName: *const u16,  // LPCWSTR optional
        pBuffer: *mut u16,  // LPWSTR optional, out
        pdwSize: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("mscms.dll", CharSet = CharSet.Unicode)]
public static extern bool GetColorDirectoryW([MarshalAs(UnmanagedType.LPWStr)] string pMachineName, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder pBuffer, ref uint pdwSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'mscms_GetColorDirectoryW' -Namespace Win32 -PassThru
# $api::GetColorDirectoryW(pMachineName, pBuffer, pdwSize)

#uselib "mscms.dll"
#func global GetColorDirectoryW "GetColorDirectoryW" wptr, wptr, wptr
; GetColorDirectoryW pMachineName, varptr(pBuffer), varptr(pdwSize)   ; 戻り値は stat
; pMachineName : LPCWSTR optional -> "wptr"
; pBuffer : LPWSTR optional, out -> "wptr"
; pdwSize : DWORD* 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 "mscms.dll"
#cfunc global GetColorDirectoryW "GetColorDirectoryW" wstr, var, var
; res = GetColorDirectoryW(pMachineName, pBuffer, pdwSize)
; pMachineName : LPCWSTR optional -> "wstr"
; pBuffer : LPWSTR optional, out -> "var"
; pdwSize : DWORD* 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。

; BOOL GetColorDirectoryW(LPCWSTR pMachineName, LPWSTR pBuffer, DWORD* pdwSize)
#uselib "mscms.dll"
#cfunc global GetColorDirectoryW "GetColorDirectoryW" wstr, var, var
; res = GetColorDirectoryW(pMachineName, pBuffer, pdwSize)
; pMachineName : LPCWSTR optional -> "wstr"
; pBuffer : LPWSTR optional, out -> "var"
; pdwSize : DWORD* 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 (
	mscms = windows.NewLazySystemDLL("mscms.dll")
	procGetColorDirectoryW = mscms.NewProc("GetColorDirectoryW")
)

// pMachineName (LPCWSTR optional), pBuffer (LPWSTR optional, out), pdwSize (DWORD* in/out)
r1, _, err := procGetColorDirectoryW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pMachineName))),
	uintptr(pBuffer),
	uintptr(pdwSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetColorDirectoryW(
  pMachineName: PWideChar;   // LPCWSTR optional
  pBuffer: PWideChar;   // LPWSTR optional, out
  pdwSize: Pointer   // DWORD* in/out
): BOOL; stdcall;
  external 'mscms.dll' name 'GetColorDirectoryW';

result := DllCall("mscms\GetColorDirectoryW"
    , "WStr", pMachineName   ; LPCWSTR optional
    , "Ptr", pBuffer   ; LPWSTR optional, out
    , "Ptr", pdwSize   ; DWORD* in/out
    , "Int")   ; return: BOOL

●GetColorDirectoryW(pMachineName, pBuffer, pdwSize) = DLL("mscms.dll", "bool GetColorDirectoryW(char*, char*, void*)")
# 呼び出し: GetColorDirectoryW(pMachineName, pBuffer, pdwSize)
# pMachineName : LPCWSTR optional -> "char*"
# pBuffer : LPWSTR optional, out -> "char*"
# pdwSize : DWORD* 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。