GetWinMetaFileBits

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

DWORD GetWinMetaFileBits(
    HENHMETAFILE hemf,
    DWORD cbData16,
    BYTE* pData16,   // optional
    INT iMapMode,
    HDC hdcRef
);

<DllImport("GDI32.dll", ExactSpelling:=True)>
Public Shared Function GetWinMetaFileBits(
    hemf As IntPtr,   ' HENHMETAFILE
    cbData16 As UInteger,   ' DWORD
    pData16 As IntPtr,   ' BYTE* optional, out
    iMapMode As Integer,   ' INT
    hdcRef As IntPtr   ' HDC
) As UInteger
End Function

' hemf : HENHMETAFILE
' cbData16 : DWORD
' pData16 : BYTE* optional, out
' iMapMode : INT
' hdcRef : HDC
Declare PtrSafe Function GetWinMetaFileBits Lib "gdi32" ( _
    ByVal hemf As LongPtr, _
    ByVal cbData16 As Long, _
    ByVal pData16 As LongPtr, _
    ByVal iMapMode As Long, _
    ByVal hdcRef 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

GetWinMetaFileBits = ctypes.windll.gdi32.GetWinMetaFileBits
GetWinMetaFileBits.restype = wintypes.DWORD
GetWinMetaFileBits.argtypes = [
    wintypes.HANDLE,  # hemf : HENHMETAFILE
    wintypes.DWORD,  # cbData16 : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pData16 : BYTE* optional, out
    ctypes.c_int,  # iMapMode : INT
    wintypes.HANDLE,  # hdcRef : HDC
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
GetWinMetaFileBits = Fiddle::Function.new(
  lib['GetWinMetaFileBits'],
  [
    Fiddle::TYPE_VOIDP,  # hemf : HENHMETAFILE
    -Fiddle::TYPE_INT,  # cbData16 : DWORD
    Fiddle::TYPE_VOIDP,  # pData16 : BYTE* optional, out
    Fiddle::TYPE_INT,  # iMapMode : INT
    Fiddle::TYPE_VOIDP,  # hdcRef : HDC
  ],
  -Fiddle::TYPE_INT)

#[link(name = "gdi32")]
extern "system" {
    fn GetWinMetaFileBits(
        hemf: *mut core::ffi::c_void,  // HENHMETAFILE
        cbData16: u32,  // DWORD
        pData16: *mut u8,  // BYTE* optional, out
        iMapMode: i32,  // INT
        hdcRef: *mut core::ffi::c_void  // HDC
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("GDI32.dll")]
public static extern uint GetWinMetaFileBits(IntPtr hemf, uint cbData16, IntPtr pData16, int iMapMode, IntPtr hdcRef);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_GetWinMetaFileBits' -Namespace Win32 -PassThru
# $api::GetWinMetaFileBits(hemf, cbData16, pData16, iMapMode, hdcRef)

#uselib "GDI32.dll"
#func global GetWinMetaFileBits "GetWinMetaFileBits" sptr, sptr, sptr, sptr, sptr
; GetWinMetaFileBits hemf, cbData16, varptr(pData16), iMapMode, hdcRef   ; 戻り値は stat
; hemf : HENHMETAFILE -> "sptr"
; cbData16 : DWORD -> "sptr"
; pData16 : BYTE* optional, out -> "sptr"
; iMapMode : INT -> "sptr"
; hdcRef : HDC -> "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 GetWinMetaFileBits "GetWinMetaFileBits" sptr, int, var, int, sptr
; res = GetWinMetaFileBits(hemf, cbData16, pData16, iMapMode, hdcRef)
; hemf : HENHMETAFILE -> "sptr"
; cbData16 : DWORD -> "int"
; pData16 : BYTE* optional, out -> "var"
; iMapMode : INT -> "int"
; hdcRef : HDC -> "sptr"
; ※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 GetWinMetaFileBits(HENHMETAFILE hemf, DWORD cbData16, BYTE* pData16, INT iMapMode, HDC hdcRef)
#uselib "GDI32.dll"
#cfunc global GetWinMetaFileBits "GetWinMetaFileBits" intptr, int, var, int, intptr
; res = GetWinMetaFileBits(hemf, cbData16, pData16, iMapMode, hdcRef)
; hemf : HENHMETAFILE -> "intptr"
; cbData16 : DWORD -> "int"
; pData16 : BYTE* optional, out -> "var"
; iMapMode : INT -> "int"
; hdcRef : HDC -> "intptr"
; ※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")
	procGetWinMetaFileBits = gdi32.NewProc("GetWinMetaFileBits")
)

// hemf (HENHMETAFILE), cbData16 (DWORD), pData16 (BYTE* optional, out), iMapMode (INT), hdcRef (HDC)
r1, _, err := procGetWinMetaFileBits.Call(
	uintptr(hemf),
	uintptr(cbData16),
	uintptr(pData16),
	uintptr(iMapMode),
	uintptr(hdcRef),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetWinMetaFileBits(
  hemf: THandle;   // HENHMETAFILE
  cbData16: DWORD;   // DWORD
  pData16: Pointer;   // BYTE* optional, out
  iMapMode: Integer;   // INT
  hdcRef: THandle   // HDC
): DWORD; stdcall;
  external 'GDI32.dll' name 'GetWinMetaFileBits';

result := DllCall("GDI32\GetWinMetaFileBits"
    , "Ptr", hemf   ; HENHMETAFILE
    , "UInt", cbData16   ; DWORD
    , "Ptr", pData16   ; BYTE* optional, out
    , "Int", iMapMode   ; INT
    , "Ptr", hdcRef   ; HDC
    , "UInt")   ; return: DWORD

●GetWinMetaFileBits(hemf, cbData16, pData16, iMapMode, hdcRef) = DLL("GDI32.dll", "dword GetWinMetaFileBits(void*, dword, void*, int, void*)")
# 呼び出し: GetWinMetaFileBits(hemf, cbData16, pData16, iMapMode, hdcRef)
# hemf : HENHMETAFILE -> "void*"
# cbData16 : DWORD -> "dword"
# pData16 : BYTE* optional, out -> "void*"
# iMapMode : INT -> "int"
# hdcRef : HDC -> "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)。