EngQueryEMFInfo

関数

デバイスのEMFスプール情報を取得する。

DLLGDI32.dll呼出規約winapi

シグネチャ

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

BOOL EngQueryEMFInfo(
    HDEV hdev,
    EMFINFO* pEMFInfo
);

パラメーター

名前	型	方向
hdev	HDEV	in
pEMFInfo	EMFINFO*	out

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL EngQueryEMFInfo(
    HDEV hdev,
    EMFINFO* pEMFInfo
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("GDI32.dll", ExactSpelling = true)]
static extern bool EngQueryEMFInfo(
    IntPtr hdev,   // HDEV
    IntPtr pEMFInfo   // EMFINFO* out
);

<DllImport("GDI32.dll", ExactSpelling:=True)>
Public Shared Function EngQueryEMFInfo(
    hdev As IntPtr,   ' HDEV
    pEMFInfo As IntPtr   ' EMFINFO* out
) As Boolean
End Function

' hdev : HDEV
' pEMFInfo : EMFINFO* out
Declare PtrSafe Function EngQueryEMFInfo Lib "gdi32" ( _
    ByVal hdev As LongPtr, _
    ByVal pEMFInfo 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

EngQueryEMFInfo = ctypes.windll.gdi32.EngQueryEMFInfo
EngQueryEMFInfo.restype = wintypes.BOOL
EngQueryEMFInfo.argtypes = [
    wintypes.HANDLE,  # hdev : HDEV
    ctypes.c_void_p,  # pEMFInfo : EMFINFO* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
EngQueryEMFInfo = Fiddle::Function.new(
  lib['EngQueryEMFInfo'],
  [
    Fiddle::TYPE_VOIDP,  # hdev : HDEV
    Fiddle::TYPE_VOIDP,  # pEMFInfo : EMFINFO* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdi32")]
extern "system" {
    fn EngQueryEMFInfo(
        hdev: *mut core::ffi::c_void,  // HDEV
        pEMFInfo: *mut EMFINFO  // EMFINFO* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("GDI32.dll")]
public static extern bool EngQueryEMFInfo(IntPtr hdev, IntPtr pEMFInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_EngQueryEMFInfo' -Namespace Win32 -PassThru
# $api::EngQueryEMFInfo(hdev, pEMFInfo)

#uselib "GDI32.dll"
#func global EngQueryEMFInfo "EngQueryEMFInfo" sptr, sptr
; EngQueryEMFInfo hdev, varptr(pEMFInfo)   ; 戻り値は stat
; hdev : HDEV -> "sptr"
; pEMFInfo : EMFINFO* 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。

出力引数:

#uselib "GDI32.dll"
#cfunc global EngQueryEMFInfo "EngQueryEMFInfo" sptr, var
; res = EngQueryEMFInfo(hdev, pEMFInfo)
; hdev : HDEV -> "sptr"
; pEMFInfo : EMFINFO* 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。#uselib "GDI32.dll"
#cfunc global EngQueryEMFInfo "EngQueryEMFInfo" sptr, sptr
; res = EngQueryEMFInfo(hdev, varptr(pEMFInfo))
; hdev : HDEV -> "sptr"
; pEMFInfo : EMFINFO* out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; BOOL EngQueryEMFInfo(HDEV hdev, EMFINFO* pEMFInfo)
#uselib "GDI32.dll"
#cfunc global EngQueryEMFInfo "EngQueryEMFInfo" intptr, var
; res = EngQueryEMFInfo(hdev, pEMFInfo)
; hdev : HDEV -> "intptr"
; pEMFInfo : EMFINFO* 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。; BOOL EngQueryEMFInfo(HDEV hdev, EMFINFO* pEMFInfo)
#uselib "GDI32.dll"
#cfunc global EngQueryEMFInfo "EngQueryEMFInfo" intptr, intptr
; res = EngQueryEMFInfo(hdev, varptr(pEMFInfo))
; hdev : HDEV -> "intptr"
; pEMFInfo : EMFINFO* out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	gdi32 = windows.NewLazySystemDLL("GDI32.dll")
	procEngQueryEMFInfo = gdi32.NewProc("EngQueryEMFInfo")
)

// hdev (HDEV), pEMFInfo (EMFINFO* out)
r1, _, err := procEngQueryEMFInfo.Call(
	uintptr(hdev),
	uintptr(pEMFInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function EngQueryEMFInfo(
  hdev: THandle;   // HDEV
  pEMFInfo: Pointer   // EMFINFO* out
): BOOL; stdcall;
  external 'GDI32.dll' name 'EngQueryEMFInfo';

result := DllCall("GDI32\EngQueryEMFInfo"
    , "Ptr", hdev   ; HDEV
    , "Ptr", pEMFInfo   ; EMFINFO* out
    , "Int")   ; return: BOOL

●EngQueryEMFInfo(hdev, pEMFInfo) = DLL("GDI32.dll", "bool EngQueryEMFInfo(void*, void*)")
# 呼び出し: EngQueryEMFInfo(hdev, pEMFInfo)
# hdev : HDEV -> "void*"
# pEMFInfo : EMFINFO* 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)。