GetColorDirectoryA

// mscms.dll  (ANSI / -A)
#include <windows.h>

BOOL GetColorDirectoryA(
    LPCSTR pMachineName,   // optional
    LPSTR pBuffer,   // optional
    DWORD* pdwSize
);

<DllImport("mscms.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function GetColorDirectoryA(
    <MarshalAs(UnmanagedType.LPStr)> pMachineName As String,   ' LPCSTR optional
    <MarshalAs(UnmanagedType.LPStr)> pBuffer As System.Text.StringBuilder,   ' LPSTR optional, out
    ByRef pdwSize As UInteger   ' DWORD* in/out
) As Boolean
End Function

' pMachineName : LPCSTR optional
' pBuffer : LPSTR optional, out
' pdwSize : DWORD* in/out
Declare PtrSafe Function GetColorDirectoryA Lib "mscms" ( _
    ByVal pMachineName As String, _
    ByVal pBuffer As String, _
    ByRef pdwSize 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

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

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('mscms.dll')
GetColorDirectoryA = Fiddle::Function.new(
  lib['GetColorDirectoryA'],
  [
    Fiddle::TYPE_VOIDP,  # pMachineName : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # pBuffer : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # pdwSize : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mscms")]
extern "system" {
    fn GetColorDirectoryA(
        pMachineName: *const u8,  // LPCSTR optional
        pBuffer: *mut u8,  // LPSTR 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.Ansi)]
public static extern bool GetColorDirectoryA([MarshalAs(UnmanagedType.LPStr)] string pMachineName, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pBuffer, ref uint pdwSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'mscms_GetColorDirectoryA' -Namespace Win32 -PassThru
# $api::GetColorDirectoryA(pMachineName, pBuffer, pdwSize)

#uselib "mscms.dll"
#func global GetColorDirectoryA "GetColorDirectoryA" sptr, sptr, sptr
; GetColorDirectoryA pMachineName, varptr(pBuffer), varptr(pdwSize)   ; 戻り値は stat
; pMachineName : LPCSTR optional -> "sptr"
; pBuffer : LPSTR optional, out -> "sptr"
; pdwSize : DWORD* in/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 "mscms.dll"
#cfunc global GetColorDirectoryA "GetColorDirectoryA" str, var, var
; res = GetColorDirectoryA(pMachineName, pBuffer, pdwSize)
; pMachineName : LPCSTR optional -> "str"
; pBuffer : LPSTR 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 GetColorDirectoryA(LPCSTR pMachineName, LPSTR pBuffer, DWORD* pdwSize)
#uselib "mscms.dll"
#cfunc global GetColorDirectoryA "GetColorDirectoryA" str, var, var
; res = GetColorDirectoryA(pMachineName, pBuffer, pdwSize)
; pMachineName : LPCSTR optional -> "str"
; pBuffer : LPSTR 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")
	procGetColorDirectoryA = mscms.NewProc("GetColorDirectoryA")
)

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

function GetColorDirectoryA(
  pMachineName: PAnsiChar;   // LPCSTR optional
  pBuffer: PAnsiChar;   // LPSTR optional, out
  pdwSize: Pointer   // DWORD* in/out
): BOOL; stdcall;
  external 'mscms.dll' name 'GetColorDirectoryA';

result := DllCall("mscms\GetColorDirectoryA"
    , "AStr", pMachineName   ; LPCSTR optional
    , "Ptr", pBuffer   ; LPSTR optional, out
    , "Ptr", pdwSize   ; DWORD* in/out
    , "Int")   ; return: BOOL

●GetColorDirectoryA(pMachineName, pBuffer, pdwSize) = DLL("mscms.dll", "bool GetColorDirectoryA(char*, char*, void*)")
# 呼び出し: GetColorDirectoryA(pMachineName, pBuffer, pdwSize)
# pMachineName : LPCSTR optional -> "char*"
# pBuffer : LPSTR 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)。