GetEnhMetaFilePixelFormat

// GDI32.dll
#include <windows.h>

DWORD GetEnhMetaFilePixelFormat(
    HENHMETAFILE hemf,
    DWORD cbBuffer,
    PIXELFORMATDESCRIPTOR* ppfd   // optional
);

<DllImport("GDI32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetEnhMetaFilePixelFormat(
    hemf As IntPtr,   ' HENHMETAFILE
    cbBuffer As UInteger,   ' DWORD
    ppfd As IntPtr   ' PIXELFORMATDESCRIPTOR* optional, out
) As UInteger
End Function

' hemf : HENHMETAFILE
' cbBuffer : DWORD
' ppfd : PIXELFORMATDESCRIPTOR* optional, out
Declare PtrSafe Function GetEnhMetaFilePixelFormat Lib "gdi32" ( _
    ByVal hemf As LongPtr, _
    ByVal cbBuffer As Long, _
    ByVal ppfd As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetEnhMetaFilePixelFormat = ctypes.windll.gdi32.GetEnhMetaFilePixelFormat
GetEnhMetaFilePixelFormat.restype = wintypes.DWORD
GetEnhMetaFilePixelFormat.argtypes = [
    wintypes.HANDLE,  # hemf : HENHMETAFILE
    wintypes.DWORD,  # cbBuffer : DWORD
    ctypes.c_void_p,  # ppfd : PIXELFORMATDESCRIPTOR* optional, out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
GetEnhMetaFilePixelFormat = Fiddle::Function.new(
  lib['GetEnhMetaFilePixelFormat'],
  [
    Fiddle::TYPE_VOIDP,  # hemf : HENHMETAFILE
    -Fiddle::TYPE_INT,  # cbBuffer : DWORD
    Fiddle::TYPE_VOIDP,  # ppfd : PIXELFORMATDESCRIPTOR* optional, out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "gdi32")]
extern "system" {
    fn GetEnhMetaFilePixelFormat(
        hemf: *mut core::ffi::c_void,  // HENHMETAFILE
        cbBuffer: u32,  // DWORD
        ppfd: *mut PIXELFORMATDESCRIPTOR  // PIXELFORMATDESCRIPTOR* optional, out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("GDI32.dll", SetLastError = true)]
public static extern uint GetEnhMetaFilePixelFormat(IntPtr hemf, uint cbBuffer, IntPtr ppfd);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_GetEnhMetaFilePixelFormat' -Namespace Win32 -PassThru
# $api::GetEnhMetaFilePixelFormat(hemf, cbBuffer, ppfd)

#uselib "GDI32.dll"
#func global GetEnhMetaFilePixelFormat "GetEnhMetaFilePixelFormat" sptr, sptr, sptr
; GetEnhMetaFilePixelFormat hemf, cbBuffer, varptr(ppfd)   ; 戻り値は stat
; hemf : HENHMETAFILE -> "sptr"
; cbBuffer : DWORD -> "sptr"
; ppfd : PIXELFORMATDESCRIPTOR* optional, 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 "GDI32.dll"
#cfunc global GetEnhMetaFilePixelFormat "GetEnhMetaFilePixelFormat" sptr, int, var
; res = GetEnhMetaFilePixelFormat(hemf, cbBuffer, ppfd)
; hemf : HENHMETAFILE -> "sptr"
; cbBuffer : DWORD -> "int"
; ppfd : PIXELFORMATDESCRIPTOR* optional, 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。

; DWORD GetEnhMetaFilePixelFormat(HENHMETAFILE hemf, DWORD cbBuffer, PIXELFORMATDESCRIPTOR* ppfd)
#uselib "GDI32.dll"
#cfunc global GetEnhMetaFilePixelFormat "GetEnhMetaFilePixelFormat" intptr, int, var
; res = GetEnhMetaFilePixelFormat(hemf, cbBuffer, ppfd)
; hemf : HENHMETAFILE -> "intptr"
; cbBuffer : DWORD -> "int"
; ppfd : PIXELFORMATDESCRIPTOR* optional, 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 (
	gdi32 = windows.NewLazySystemDLL("GDI32.dll")
	procGetEnhMetaFilePixelFormat = gdi32.NewProc("GetEnhMetaFilePixelFormat")
)

// hemf (HENHMETAFILE), cbBuffer (DWORD), ppfd (PIXELFORMATDESCRIPTOR* optional, out)
r1, _, err := procGetEnhMetaFilePixelFormat.Call(
	uintptr(hemf),
	uintptr(cbBuffer),
	uintptr(ppfd),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetEnhMetaFilePixelFormat(
  hemf: THandle;   // HENHMETAFILE
  cbBuffer: DWORD;   // DWORD
  ppfd: Pointer   // PIXELFORMATDESCRIPTOR* optional, out
): DWORD; stdcall;
  external 'GDI32.dll' name 'GetEnhMetaFilePixelFormat';

result := DllCall("GDI32\GetEnhMetaFilePixelFormat"
    , "Ptr", hemf   ; HENHMETAFILE
    , "UInt", cbBuffer   ; DWORD
    , "Ptr", ppfd   ; PIXELFORMATDESCRIPTOR* optional, out
    , "UInt")   ; return: DWORD

●GetEnhMetaFilePixelFormat(hemf, cbBuffer, ppfd) = DLL("GDI32.dll", "dword GetEnhMetaFilePixelFormat(void*, dword, void*)")
# 呼び出し: GetEnhMetaFilePixelFormat(hemf, cbBuffer, ppfd)
# hemf : HENHMETAFILE -> "void*"
# cbBuffer : DWORD -> "dword"
# ppfd : PIXELFORMATDESCRIPTOR* optional, 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)。