GdipCreateMetafileFromEmf

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

Status GdipCreateMetafileFromEmf(
    HENHMETAFILE hEmf,
    BOOL deleteEmf,
    GpMetafile** metafile
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipCreateMetafileFromEmf(
    hEmf As IntPtr,   ' HENHMETAFILE
    deleteEmf As Boolean,   ' BOOL
    metafile As IntPtr   ' GpMetafile** in/out
) As Integer
End Function

' hEmf : HENHMETAFILE
' deleteEmf : BOOL
' metafile : GpMetafile** in/out
Declare PtrSafe Function GdipCreateMetafileFromEmf Lib "gdiplus" ( _
    ByVal hEmf As LongPtr, _
    ByVal deleteEmf As Long, _
    ByVal metafile 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

GdipCreateMetafileFromEmf = ctypes.windll.gdiplus.GdipCreateMetafileFromEmf
GdipCreateMetafileFromEmf.restype = ctypes.c_int
GdipCreateMetafileFromEmf.argtypes = [
    wintypes.HANDLE,  # hEmf : HENHMETAFILE
    wintypes.BOOL,  # deleteEmf : BOOL
    ctypes.c_void_p,  # metafile : GpMetafile** in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipCreateMetafileFromEmf = Fiddle::Function.new(
  lib['GdipCreateMetafileFromEmf'],
  [
    Fiddle::TYPE_VOIDP,  # hEmf : HENHMETAFILE
    Fiddle::TYPE_INT,  # deleteEmf : BOOL
    Fiddle::TYPE_VOIDP,  # metafile : GpMetafile** in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipCreateMetafileFromEmf(
        hEmf: *mut core::ffi::c_void,  // HENHMETAFILE
        deleteEmf: i32,  // BOOL
        metafile: *mut *mut GpMetafile  // GpMetafile** in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipCreateMetafileFromEmf(IntPtr hEmf, bool deleteEmf, IntPtr metafile);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipCreateMetafileFromEmf' -Namespace Win32 -PassThru
# $api::GdipCreateMetafileFromEmf(hEmf, deleteEmf, metafile)

#uselib "gdiplus.dll"
#func global GdipCreateMetafileFromEmf "GdipCreateMetafileFromEmf" sptr, sptr, sptr
; GdipCreateMetafileFromEmf hEmf, deleteEmf, varptr(metafile)   ; 戻り値は stat
; hEmf : HENHMETAFILE -> "sptr"
; deleteEmf : BOOL -> "sptr"
; metafile : GpMetafile** 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 GdipCreateMetafileFromEmf "GdipCreateMetafileFromEmf" sptr, int, var
; res = GdipCreateMetafileFromEmf(hEmf, deleteEmf, metafile)
; hEmf : HENHMETAFILE -> "sptr"
; deleteEmf : BOOL -> "int"
; metafile : GpMetafile** 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 GdipCreateMetafileFromEmf(HENHMETAFILE hEmf, BOOL deleteEmf, GpMetafile** metafile)
#uselib "gdiplus.dll"
#cfunc global GdipCreateMetafileFromEmf "GdipCreateMetafileFromEmf" intptr, int, var
; res = GdipCreateMetafileFromEmf(hEmf, deleteEmf, metafile)
; hEmf : HENHMETAFILE -> "intptr"
; deleteEmf : BOOL -> "int"
; metafile : GpMetafile** 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")
	procGdipCreateMetafileFromEmf = gdiplus.NewProc("GdipCreateMetafileFromEmf")
)

// hEmf (HENHMETAFILE), deleteEmf (BOOL), metafile (GpMetafile** in/out)
r1, _, err := procGdipCreateMetafileFromEmf.Call(
	uintptr(hEmf),
	uintptr(deleteEmf),
	uintptr(metafile),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipCreateMetafileFromEmf(
  hEmf: THandle;   // HENHMETAFILE
  deleteEmf: BOOL;   // BOOL
  metafile: Pointer   // GpMetafile** in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipCreateMetafileFromEmf';

result := DllCall("gdiplus\GdipCreateMetafileFromEmf"
    , "Ptr", hEmf   ; HENHMETAFILE
    , "Int", deleteEmf   ; BOOL
    , "Ptr", metafile   ; GpMetafile** in/out
    , "Int")   ; return: Status

●GdipCreateMetafileFromEmf(hEmf, deleteEmf, metafile) = DLL("gdiplus.dll", "int GdipCreateMetafileFromEmf(void*, bool, void*)")
# 呼び出し: GdipCreateMetafileFromEmf(hEmf, deleteEmf, metafile)
# hEmf : HENHMETAFILE -> "void*"
# deleteEmf : BOOL -> "bool"
# metafile : GpMetafile** 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)。