GdiGetDC

関数

スプールファイルに関連付くデバイスコンテキストを取得する。

DLLGDI32.dll呼出規約winapi

シグネチャ

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

HDC GdiGetDC(
    HANDLE SpoolFileHandle
);

パラメーター

名前	型	方向
SpoolFileHandle	HANDLE	in

戻り値の型: HDC

各言語での呼び出し定義

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

HDC GdiGetDC(
    HANDLE SpoolFileHandle
);

[DllImport("GDI32.dll", ExactSpelling = true)]
static extern IntPtr GdiGetDC(
    IntPtr SpoolFileHandle   // HANDLE
);

<DllImport("GDI32.dll", ExactSpelling:=True)>
Public Shared Function GdiGetDC(
    SpoolFileHandle As IntPtr   ' HANDLE
) As IntPtr
End Function

' SpoolFileHandle : HANDLE
Declare PtrSafe Function GdiGetDC Lib "gdi32" ( _
    ByVal SpoolFileHandle As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GdiGetDC = ctypes.windll.gdi32.GdiGetDC
GdiGetDC.restype = ctypes.c_void_p
GdiGetDC.argtypes = [
    wintypes.HANDLE,  # SpoolFileHandle : HANDLE
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
GdiGetDC = Fiddle::Function.new(
  lib['GdiGetDC'],
  [
    Fiddle::TYPE_VOIDP,  # SpoolFileHandle : HANDLE
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "gdi32")]
extern "system" {
    fn GdiGetDC(
        SpoolFileHandle: *mut core::ffi::c_void  // HANDLE
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("GDI32.dll")]
public static extern IntPtr GdiGetDC(IntPtr SpoolFileHandle);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_GdiGetDC' -Namespace Win32 -PassThru
# $api::GdiGetDC(SpoolFileHandle)

#uselib "GDI32.dll"
#func global GdiGetDC "GdiGetDC" sptr
; GdiGetDC SpoolFileHandle   ; 戻り値は stat
; SpoolFileHandle : HANDLE -> "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 GdiGetDC "GdiGetDC" sptr
; res = GdiGetDC(SpoolFileHandle)
; SpoolFileHandle : HANDLE -> "sptr"

; HDC GdiGetDC(HANDLE SpoolFileHandle)
#uselib "GDI32.dll"
#cfunc global GdiGetDC "GdiGetDC" intptr
; res = GdiGetDC(SpoolFileHandle)
; SpoolFileHandle : HANDLE -> "intptr"

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

var (
	gdi32 = windows.NewLazySystemDLL("GDI32.dll")
	procGdiGetDC = gdi32.NewProc("GdiGetDC")
)

// SpoolFileHandle (HANDLE)
r1, _, err := procGdiGetDC.Call(
	uintptr(SpoolFileHandle),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HDC

function GdiGetDC(
  SpoolFileHandle: THandle   // HANDLE
): THandle; stdcall;
  external 'GDI32.dll' name 'GdiGetDC';

result := DllCall("GDI32\GdiGetDC"
    , "Ptr", SpoolFileHandle   ; HANDLE
    , "Ptr")   ; return: HDC

●GdiGetDC(SpoolFileHandle) = DLL("GDI32.dll", "void* GdiGetDC(void*)")
# 呼び出し: GdiGetDC(SpoolFileHandle)
# SpoolFileHandle : HANDLE -> "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)。