GetMonitorColorTemperature

// dxva2.dll
#include <windows.h>

INT GetMonitorColorTemperature(
    HANDLE hMonitor,
    MC_COLOR_TEMPERATURE* pctCurrentColorTemperature
);

<DllImport("dxva2.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetMonitorColorTemperature(
    hMonitor As IntPtr,   ' HANDLE
    <Out> ByRef pctCurrentColorTemperature As Integer   ' MC_COLOR_TEMPERATURE* out
) As Integer
End Function

' hMonitor : HANDLE
' pctCurrentColorTemperature : MC_COLOR_TEMPERATURE* out
Declare PtrSafe Function GetMonitorColorTemperature Lib "dxva2" ( _
    ByVal hMonitor As LongPtr, _
    ByRef pctCurrentColorTemperature 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

GetMonitorColorTemperature = ctypes.windll.dxva2.GetMonitorColorTemperature
GetMonitorColorTemperature.restype = ctypes.c_int
GetMonitorColorTemperature.argtypes = [
    wintypes.HANDLE,  # hMonitor : HANDLE
    ctypes.c_void_p,  # pctCurrentColorTemperature : MC_COLOR_TEMPERATURE* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dxva2.dll')
GetMonitorColorTemperature = Fiddle::Function.new(
  lib['GetMonitorColorTemperature'],
  [
    Fiddle::TYPE_VOIDP,  # hMonitor : HANDLE
    Fiddle::TYPE_VOIDP,  # pctCurrentColorTemperature : MC_COLOR_TEMPERATURE* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "dxva2")]
extern "system" {
    fn GetMonitorColorTemperature(
        hMonitor: *mut core::ffi::c_void,  // HANDLE
        pctCurrentColorTemperature: *mut i32  // MC_COLOR_TEMPERATURE* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("dxva2.dll", SetLastError = true)]
public static extern int GetMonitorColorTemperature(IntPtr hMonitor, out int pctCurrentColorTemperature);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dxva2_GetMonitorColorTemperature' -Namespace Win32 -PassThru
# $api::GetMonitorColorTemperature(hMonitor, pctCurrentColorTemperature)

#uselib "dxva2.dll"
#func global GetMonitorColorTemperature "GetMonitorColorTemperature" sptr, sptr
; GetMonitorColorTemperature hMonitor, pctCurrentColorTemperature   ; 戻り値は stat
; hMonitor : HANDLE -> "sptr"
; pctCurrentColorTemperature : MC_COLOR_TEMPERATURE* 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 "dxva2.dll"
#cfunc global GetMonitorColorTemperature "GetMonitorColorTemperature" sptr, int
; res = GetMonitorColorTemperature(hMonitor, pctCurrentColorTemperature)
; hMonitor : HANDLE -> "sptr"
; pctCurrentColorTemperature : MC_COLOR_TEMPERATURE* out -> "int"

; INT GetMonitorColorTemperature(HANDLE hMonitor, MC_COLOR_TEMPERATURE* pctCurrentColorTemperature)
#uselib "dxva2.dll"
#cfunc global GetMonitorColorTemperature "GetMonitorColorTemperature" intptr, int
; res = GetMonitorColorTemperature(hMonitor, pctCurrentColorTemperature)
; hMonitor : HANDLE -> "intptr"
; pctCurrentColorTemperature : MC_COLOR_TEMPERATURE* out -> "int"

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

var (
	dxva2 = windows.NewLazySystemDLL("dxva2.dll")
	procGetMonitorColorTemperature = dxva2.NewProc("GetMonitorColorTemperature")
)

// hMonitor (HANDLE), pctCurrentColorTemperature (MC_COLOR_TEMPERATURE* out)
r1, _, err := procGetMonitorColorTemperature.Call(
	uintptr(hMonitor),
	uintptr(pctCurrentColorTemperature),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function GetMonitorColorTemperature(
  hMonitor: THandle;   // HANDLE
  pctCurrentColorTemperature: Pointer   // MC_COLOR_TEMPERATURE* out
): Integer; stdcall;
  external 'dxva2.dll' name 'GetMonitorColorTemperature';

result := DllCall("dxva2\GetMonitorColorTemperature"
    , "Ptr", hMonitor   ; HANDLE
    , "Ptr", pctCurrentColorTemperature   ; MC_COLOR_TEMPERATURE* out
    , "Int")   ; return: INT

●GetMonitorColorTemperature(hMonitor, pctCurrentColorTemperature) = DLL("dxva2.dll", "int GetMonitorColorTemperature(void*, void*)")
# 呼び出し: GetMonitorColorTemperature(hMonitor, pctCurrentColorTemperature)
# hMonitor : HANDLE -> "void*"
# pctCurrentColorTemperature : MC_COLOR_TEMPERATURE* 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)。