OleTranslateColor

// OLEAUT32.dll
#include <windows.h>

HRESULT OleTranslateColor(
    DWORD clr,
    HPALETTE hpal,
    COLORREF* lpcolorref
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function OleTranslateColor(
    clr As UInteger,   ' DWORD
    hpal As IntPtr,   ' HPALETTE
    <Out> ByRef lpcolorref As UInteger   ' COLORREF* out
) As Integer
End Function

' clr : DWORD
' hpal : HPALETTE
' lpcolorref : COLORREF* out
Declare PtrSafe Function OleTranslateColor Lib "oleaut32" ( _
    ByVal clr As Long, _
    ByVal hpal As LongPtr, _
    ByRef lpcolorref 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

OleTranslateColor = ctypes.windll.oleaut32.OleTranslateColor
OleTranslateColor.restype = ctypes.c_int
OleTranslateColor.argtypes = [
    wintypes.DWORD,  # clr : DWORD
    wintypes.HANDLE,  # hpal : HPALETTE
    ctypes.c_void_p,  # lpcolorref : COLORREF* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
OleTranslateColor = Fiddle::Function.new(
  lib['OleTranslateColor'],
  [
    -Fiddle::TYPE_INT,  # clr : DWORD
    Fiddle::TYPE_VOIDP,  # hpal : HPALETTE
    Fiddle::TYPE_VOIDP,  # lpcolorref : COLORREF* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn OleTranslateColor(
        clr: u32,  // DWORD
        hpal: *mut core::ffi::c_void,  // HPALETTE
        lpcolorref: *mut u32  // COLORREF* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int OleTranslateColor(uint clr, IntPtr hpal, out uint lpcolorref);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_OleTranslateColor' -Namespace Win32 -PassThru
# $api::OleTranslateColor(clr, hpal, lpcolorref)

#uselib "OLEAUT32.dll"
#func global OleTranslateColor "OleTranslateColor" sptr, sptr, sptr
; OleTranslateColor clr, hpal, lpcolorref   ; 戻り値は stat
; clr : DWORD -> "sptr"
; hpal : HPALETTE -> "sptr"
; lpcolorref : COLORREF* 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 "OLEAUT32.dll"
#cfunc global OleTranslateColor "OleTranslateColor" int, sptr, int
; res = OleTranslateColor(clr, hpal, lpcolorref)
; clr : DWORD -> "int"
; hpal : HPALETTE -> "sptr"
; lpcolorref : COLORREF* out -> "int"

; HRESULT OleTranslateColor(DWORD clr, HPALETTE hpal, COLORREF* lpcolorref)
#uselib "OLEAUT32.dll"
#cfunc global OleTranslateColor "OleTranslateColor" int, intptr, int
; res = OleTranslateColor(clr, hpal, lpcolorref)
; clr : DWORD -> "int"
; hpal : HPALETTE -> "intptr"
; lpcolorref : COLORREF* out -> "int"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procOleTranslateColor = oleaut32.NewProc("OleTranslateColor")
)

// clr (DWORD), hpal (HPALETTE), lpcolorref (COLORREF* out)
r1, _, err := procOleTranslateColor.Call(
	uintptr(clr),
	uintptr(hpal),
	uintptr(lpcolorref),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function OleTranslateColor(
  clr: DWORD;   // DWORD
  hpal: THandle;   // HPALETTE
  lpcolorref: Pointer   // COLORREF* out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'OleTranslateColor';

result := DllCall("OLEAUT32\OleTranslateColor"
    , "UInt", clr   ; DWORD
    , "Ptr", hpal   ; HPALETTE
    , "Ptr", lpcolorref   ; COLORREF* out
    , "Int")   ; return: HRESULT

●OleTranslateColor(clr, hpal, lpcolorref) = DLL("OLEAUT32.dll", "int OleTranslateColor(dword, void*, void*)")
# 呼び出し: OleTranslateColor(clr, hpal, lpcolorref)
# clr : DWORD -> "dword"
# hpal : HPALETTE -> "void*"
# lpcolorref : COLORREF* 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)。