GdipGetMetafileHeaderFromWmf

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

Status GdipGetMetafileHeaderFromWmf(
    HMETAFILE hWmf,
    const WmfPlaceableFileHeader* wmfPlaceableFileHeader,
    MetafileHeader* header
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipGetMetafileHeaderFromWmf(
    hWmf As IntPtr,   ' HMETAFILE
    wmfPlaceableFileHeader As IntPtr,   ' WmfPlaceableFileHeader*
    header As IntPtr   ' MetafileHeader* in/out
) As Integer
End Function

' hWmf : HMETAFILE
' wmfPlaceableFileHeader : WmfPlaceableFileHeader*
' header : MetafileHeader* in/out
Declare PtrSafe Function GdipGetMetafileHeaderFromWmf Lib "gdiplus" ( _
    ByVal hWmf As LongPtr, _
    ByVal wmfPlaceableFileHeader As LongPtr, _
    ByVal header 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

GdipGetMetafileHeaderFromWmf = ctypes.windll.gdiplus.GdipGetMetafileHeaderFromWmf
GdipGetMetafileHeaderFromWmf.restype = ctypes.c_int
GdipGetMetafileHeaderFromWmf.argtypes = [
    wintypes.HANDLE,  # hWmf : HMETAFILE
    ctypes.c_void_p,  # wmfPlaceableFileHeader : WmfPlaceableFileHeader*
    ctypes.c_void_p,  # header : MetafileHeader* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipGetMetafileHeaderFromWmf = Fiddle::Function.new(
  lib['GdipGetMetafileHeaderFromWmf'],
  [
    Fiddle::TYPE_VOIDP,  # hWmf : HMETAFILE
    Fiddle::TYPE_VOIDP,  # wmfPlaceableFileHeader : WmfPlaceableFileHeader*
    Fiddle::TYPE_VOIDP,  # header : MetafileHeader* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipGetMetafileHeaderFromWmf(
        hWmf: *mut core::ffi::c_void,  // HMETAFILE
        wmfPlaceableFileHeader: *const WmfPlaceableFileHeader,  // WmfPlaceableFileHeader*
        header: *mut MetafileHeader  // MetafileHeader* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipGetMetafileHeaderFromWmf(IntPtr hWmf, IntPtr wmfPlaceableFileHeader, IntPtr header);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipGetMetafileHeaderFromWmf' -Namespace Win32 -PassThru
# $api::GdipGetMetafileHeaderFromWmf(hWmf, wmfPlaceableFileHeader, header)

#uselib "gdiplus.dll"
#func global GdipGetMetafileHeaderFromWmf "GdipGetMetafileHeaderFromWmf" sptr, sptr, sptr
; GdipGetMetafileHeaderFromWmf hWmf, varptr(wmfPlaceableFileHeader), varptr(header)   ; 戻り値は stat
; hWmf : HMETAFILE -> "sptr"
; wmfPlaceableFileHeader : WmfPlaceableFileHeader* -> "sptr"
; header : MetafileHeader* in/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 "gdiplus.dll"
#cfunc global GdipGetMetafileHeaderFromWmf "GdipGetMetafileHeaderFromWmf" sptr, var, var
; res = GdipGetMetafileHeaderFromWmf(hWmf, wmfPlaceableFileHeader, header)
; hWmf : HMETAFILE -> "sptr"
; wmfPlaceableFileHeader : WmfPlaceableFileHeader* -> "var"
; header : MetafileHeader* in/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。

; Status GdipGetMetafileHeaderFromWmf(HMETAFILE hWmf, WmfPlaceableFileHeader* wmfPlaceableFileHeader, MetafileHeader* header)
#uselib "gdiplus.dll"
#cfunc global GdipGetMetafileHeaderFromWmf "GdipGetMetafileHeaderFromWmf" intptr, var, var
; res = GdipGetMetafileHeaderFromWmf(hWmf, wmfPlaceableFileHeader, header)
; hWmf : HMETAFILE -> "intptr"
; wmfPlaceableFileHeader : WmfPlaceableFileHeader* -> "var"
; header : MetafileHeader* in/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 (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipGetMetafileHeaderFromWmf = gdiplus.NewProc("GdipGetMetafileHeaderFromWmf")
)

// hWmf (HMETAFILE), wmfPlaceableFileHeader (WmfPlaceableFileHeader*), header (MetafileHeader* in/out)
r1, _, err := procGdipGetMetafileHeaderFromWmf.Call(
	uintptr(hWmf),
	uintptr(wmfPlaceableFileHeader),
	uintptr(header),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipGetMetafileHeaderFromWmf(
  hWmf: THandle;   // HMETAFILE
  wmfPlaceableFileHeader: Pointer;   // WmfPlaceableFileHeader*
  header: Pointer   // MetafileHeader* in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipGetMetafileHeaderFromWmf';

result := DllCall("gdiplus\GdipGetMetafileHeaderFromWmf"
    , "Ptr", hWmf   ; HMETAFILE
    , "Ptr", wmfPlaceableFileHeader   ; WmfPlaceableFileHeader*
    , "Ptr", header   ; MetafileHeader* in/out
    , "Int")   ; return: Status

●GdipGetMetafileHeaderFromWmf(hWmf, wmfPlaceableFileHeader, header) = DLL("gdiplus.dll", "int GdipGetMetafileHeaderFromWmf(void*, void*, void*)")
# 呼び出し: GdipGetMetafileHeaderFromWmf(hWmf, wmfPlaceableFileHeader, header)
# hWmf : HMETAFILE -> "void*"
# wmfPlaceableFileHeader : WmfPlaceableFileHeader* -> "void*"
# header : MetafileHeader* in/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)。