DwmGetColorizationColor

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

HRESULT DwmGetColorizationColor(
    DWORD* pcrColorization,
    BOOL* pfOpaqueBlend
);

<DllImport("dwmapi.dll", ExactSpelling:=True)>
Public Shared Function DwmGetColorizationColor(
    <Out> ByRef pcrColorization As UInteger,   ' DWORD* out
    <Out> ByRef pfOpaqueBlend As Integer   ' BOOL* out
) As Integer
End Function

' pcrColorization : DWORD* out
' pfOpaqueBlend : BOOL* out
Declare PtrSafe Function DwmGetColorizationColor Lib "dwmapi" ( _
    ByRef pcrColorization As Long, _
    ByRef pfOpaqueBlend 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

DwmGetColorizationColor = ctypes.windll.dwmapi.DwmGetColorizationColor
DwmGetColorizationColor.restype = ctypes.c_int
DwmGetColorizationColor.argtypes = [
    ctypes.POINTER(wintypes.DWORD),  # pcrColorization : DWORD* out
    ctypes.c_void_p,  # pfOpaqueBlend : BOOL* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dwmapi.dll')
DwmGetColorizationColor = Fiddle::Function.new(
  lib['DwmGetColorizationColor'],
  [
    Fiddle::TYPE_VOIDP,  # pcrColorization : DWORD* out
    Fiddle::TYPE_VOIDP,  # pfOpaqueBlend : BOOL* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "dwmapi")]
extern "system" {
    fn DwmGetColorizationColor(
        pcrColorization: *mut u32,  // DWORD* out
        pfOpaqueBlend: *mut i32  // BOOL* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("dwmapi.dll")]
public static extern int DwmGetColorizationColor(out uint pcrColorization, out int pfOpaqueBlend);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dwmapi_DwmGetColorizationColor' -Namespace Win32 -PassThru
# $api::DwmGetColorizationColor(pcrColorization, pfOpaqueBlend)

#uselib "dwmapi.dll"
#func global DwmGetColorizationColor "DwmGetColorizationColor" sptr, sptr
; DwmGetColorizationColor varptr(pcrColorization), pfOpaqueBlend   ; 戻り値は stat
; pcrColorization : DWORD* out -> "sptr"
; pfOpaqueBlend : BOOL* 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 "dwmapi.dll"
#cfunc global DwmGetColorizationColor "DwmGetColorizationColor" var, int
; res = DwmGetColorizationColor(pcrColorization, pfOpaqueBlend)
; pcrColorization : DWORD* out -> "var"
; pfOpaqueBlend : BOOL* out -> "int"
; ※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。

; HRESULT DwmGetColorizationColor(DWORD* pcrColorization, BOOL* pfOpaqueBlend)
#uselib "dwmapi.dll"
#cfunc global DwmGetColorizationColor "DwmGetColorizationColor" var, int
; res = DwmGetColorizationColor(pcrColorization, pfOpaqueBlend)
; pcrColorization : DWORD* out -> "var"
; pfOpaqueBlend : BOOL* out -> "int"
; ※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 (
	dwmapi = windows.NewLazySystemDLL("dwmapi.dll")
	procDwmGetColorizationColor = dwmapi.NewProc("DwmGetColorizationColor")
)

// pcrColorization (DWORD* out), pfOpaqueBlend (BOOL* out)
r1, _, err := procDwmGetColorizationColor.Call(
	uintptr(pcrColorization),
	uintptr(pfOpaqueBlend),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DwmGetColorizationColor(
  pcrColorization: Pointer;   // DWORD* out
  pfOpaqueBlend: Pointer   // BOOL* out
): Integer; stdcall;
  external 'dwmapi.dll' name 'DwmGetColorizationColor';

result := DllCall("dwmapi\DwmGetColorizationColor"
    , "Ptr", pcrColorization   ; DWORD* out
    , "Ptr", pfOpaqueBlend   ; BOOL* out
    , "Int")   ; return: HRESULT

●DwmGetColorizationColor(pcrColorization, pfOpaqueBlend) = DLL("dwmapi.dll", "int DwmGetColorizationColor(void*, void*)")
# 呼び出し: DwmGetColorizationColor(pcrColorization, pfOpaqueBlend)
# pcrColorization : DWORD* out -> "void*"
# pfOpaqueBlend : BOOL* 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)。