GetMonitorCapabilities

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

INT GetMonitorCapabilities(
    HANDLE hMonitor,
    DWORD* pdwMonitorCapabilities,
    DWORD* pdwSupportedColorTemperatures
);

<DllImport("dxva2.dll", ExactSpelling:=True)>
Public Shared Function GetMonitorCapabilities(
    hMonitor As IntPtr,   ' HANDLE
    <Out> ByRef pdwMonitorCapabilities As UInteger,   ' DWORD* out
    <Out> ByRef pdwSupportedColorTemperatures As UInteger   ' DWORD* out
) As Integer
End Function

' hMonitor : HANDLE
' pdwMonitorCapabilities : DWORD* out
' pdwSupportedColorTemperatures : DWORD* out
Declare PtrSafe Function GetMonitorCapabilities Lib "dxva2" ( _
    ByVal hMonitor As LongPtr, _
    ByRef pdwMonitorCapabilities As Long, _
    ByRef pdwSupportedColorTemperatures 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

GetMonitorCapabilities = ctypes.windll.dxva2.GetMonitorCapabilities
GetMonitorCapabilities.restype = ctypes.c_int
GetMonitorCapabilities.argtypes = [
    wintypes.HANDLE,  # hMonitor : HANDLE
    ctypes.POINTER(wintypes.DWORD),  # pdwMonitorCapabilities : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # pdwSupportedColorTemperatures : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dxva2.dll')
GetMonitorCapabilities = Fiddle::Function.new(
  lib['GetMonitorCapabilities'],
  [
    Fiddle::TYPE_VOIDP,  # hMonitor : HANDLE
    Fiddle::TYPE_VOIDP,  # pdwMonitorCapabilities : DWORD* out
    Fiddle::TYPE_VOIDP,  # pdwSupportedColorTemperatures : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "dxva2")]
extern "system" {
    fn GetMonitorCapabilities(
        hMonitor: *mut core::ffi::c_void,  // HANDLE
        pdwMonitorCapabilities: *mut u32,  // DWORD* out
        pdwSupportedColorTemperatures: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("dxva2.dll")]
public static extern int GetMonitorCapabilities(IntPtr hMonitor, out uint pdwMonitorCapabilities, out uint pdwSupportedColorTemperatures);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dxva2_GetMonitorCapabilities' -Namespace Win32 -PassThru
# $api::GetMonitorCapabilities(hMonitor, pdwMonitorCapabilities, pdwSupportedColorTemperatures)

#uselib "dxva2.dll"
#func global GetMonitorCapabilities "GetMonitorCapabilities" sptr, sptr, sptr
; GetMonitorCapabilities hMonitor, varptr(pdwMonitorCapabilities), varptr(pdwSupportedColorTemperatures)   ; 戻り値は stat
; hMonitor : HANDLE -> "sptr"
; pdwMonitorCapabilities : DWORD* out -> "sptr"
; pdwSupportedColorTemperatures : DWORD* 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 GetMonitorCapabilities "GetMonitorCapabilities" sptr, var, var
; res = GetMonitorCapabilities(hMonitor, pdwMonitorCapabilities, pdwSupportedColorTemperatures)
; hMonitor : HANDLE -> "sptr"
; pdwMonitorCapabilities : DWORD* out -> "var"
; pdwSupportedColorTemperatures : DWORD* 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。

; INT GetMonitorCapabilities(HANDLE hMonitor, DWORD* pdwMonitorCapabilities, DWORD* pdwSupportedColorTemperatures)
#uselib "dxva2.dll"
#cfunc global GetMonitorCapabilities "GetMonitorCapabilities" intptr, var, var
; res = GetMonitorCapabilities(hMonitor, pdwMonitorCapabilities, pdwSupportedColorTemperatures)
; hMonitor : HANDLE -> "intptr"
; pdwMonitorCapabilities : DWORD* out -> "var"
; pdwSupportedColorTemperatures : DWORD* 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 (
	dxva2 = windows.NewLazySystemDLL("dxva2.dll")
	procGetMonitorCapabilities = dxva2.NewProc("GetMonitorCapabilities")
)

// hMonitor (HANDLE), pdwMonitorCapabilities (DWORD* out), pdwSupportedColorTemperatures (DWORD* out)
r1, _, err := procGetMonitorCapabilities.Call(
	uintptr(hMonitor),
	uintptr(pdwMonitorCapabilities),
	uintptr(pdwSupportedColorTemperatures),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function GetMonitorCapabilities(
  hMonitor: THandle;   // HANDLE
  pdwMonitorCapabilities: Pointer;   // DWORD* out
  pdwSupportedColorTemperatures: Pointer   // DWORD* out
): Integer; stdcall;
  external 'dxva2.dll' name 'GetMonitorCapabilities';

result := DllCall("dxva2\GetMonitorCapabilities"
    , "Ptr", hMonitor   ; HANDLE
    , "Ptr", pdwMonitorCapabilities   ; DWORD* out
    , "Ptr", pdwSupportedColorTemperatures   ; DWORD* out
    , "Int")   ; return: INT

●GetMonitorCapabilities(hMonitor, pdwMonitorCapabilities, pdwSupportedColorTemperatures) = DLL("dxva2.dll", "int GetMonitorCapabilities(void*, void*, void*)")
# 呼び出し: GetMonitorCapabilities(hMonitor, pdwMonitorCapabilities, pdwSupportedColorTemperatures)
# hMonitor : HANDLE -> "void*"
# pdwMonitorCapabilities : DWORD* out -> "void*"
# pdwSupportedColorTemperatures : DWORD* 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)。