GetDCOrgEx

関数

DCの最終的な変換原点をデバイス座標で取得する。

DLLGDI32.dll呼出規約winapi対応OSWindows 2000 以降

シグネチャ

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

BOOL GetDCOrgEx(
    HDC hdc,
    POINT* lppt
);

パラメーター

名前	型	方向
hdc	HDC	in
lppt	POINT*	out

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL GetDCOrgEx(
    HDC hdc,
    POINT* lppt
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("GDI32.dll", ExactSpelling = true)]
static extern bool GetDCOrgEx(
    IntPtr hdc,   // HDC
    IntPtr lppt   // POINT* out
);

<DllImport("GDI32.dll", ExactSpelling:=True)>
Public Shared Function GetDCOrgEx(
    hdc As IntPtr,   ' HDC
    lppt As IntPtr   ' POINT* out
) As Boolean
End Function

' hdc : HDC
' lppt : POINT* out
Declare PtrSafe Function GetDCOrgEx Lib "gdi32" ( _
    ByVal hdc As LongPtr, _
    ByVal lppt 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

GetDCOrgEx = ctypes.windll.gdi32.GetDCOrgEx
GetDCOrgEx.restype = wintypes.BOOL
GetDCOrgEx.argtypes = [
    wintypes.HANDLE,  # hdc : HDC
    ctypes.c_void_p,  # lppt : POINT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
GetDCOrgEx = Fiddle::Function.new(
  lib['GetDCOrgEx'],
  [
    Fiddle::TYPE_VOIDP,  # hdc : HDC
    Fiddle::TYPE_VOIDP,  # lppt : POINT* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdi32")]
extern "system" {
    fn GetDCOrgEx(
        hdc: *mut core::ffi::c_void,  // HDC
        lppt: *mut POINT  // POINT* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("GDI32.dll")]
public static extern bool GetDCOrgEx(IntPtr hdc, IntPtr lppt);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_GetDCOrgEx' -Namespace Win32 -PassThru
# $api::GetDCOrgEx(hdc, lppt)

#uselib "GDI32.dll"
#func global GetDCOrgEx "GetDCOrgEx" sptr, sptr
; GetDCOrgEx hdc, varptr(lppt)   ; 戻り値は stat
; hdc : HDC -> "sptr"
; lppt : POINT* 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 GetDCOrgEx "GetDCOrgEx" sptr, var
; res = GetDCOrgEx(hdc, lppt)
; hdc : HDC -> "sptr"
; lppt : POINT* 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 GetDCOrgEx "GetDCOrgEx" sptr, sptr
; res = GetDCOrgEx(hdc, varptr(lppt))
; hdc : HDC -> "sptr"
; lppt : POINT* 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 GetDCOrgEx(HDC hdc, POINT* lppt)
#uselib "GDI32.dll"
#cfunc global GetDCOrgEx "GetDCOrgEx" intptr, var
; res = GetDCOrgEx(hdc, lppt)
; hdc : HDC -> "intptr"
; lppt : POINT* 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 GetDCOrgEx(HDC hdc, POINT* lppt)
#uselib "GDI32.dll"
#cfunc global GetDCOrgEx "GetDCOrgEx" intptr, intptr
; res = GetDCOrgEx(hdc, varptr(lppt))
; hdc : HDC -> "intptr"
; lppt : POINT* 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")
	procGetDCOrgEx = gdi32.NewProc("GetDCOrgEx")
)

// hdc (HDC), lppt (POINT* out)
r1, _, err := procGetDCOrgEx.Call(
	uintptr(hdc),
	uintptr(lppt),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetDCOrgEx(
  hdc: THandle;   // HDC
  lppt: Pointer   // POINT* out
): BOOL; stdcall;
  external 'GDI32.dll' name 'GetDCOrgEx';

result := DllCall("GDI32\GetDCOrgEx"
    , "Ptr", hdc   ; HDC
    , "Ptr", lppt   ; POINT* out
    , "Int")   ; return: BOOL

●GetDCOrgEx(hdc, lppt) = DLL("GDI32.dll", "bool GetDCOrgEx(void*, void*)")
# 呼び出し: GetDCOrgEx(hdc, lppt)
# hdc : HDC -> "void*"
# lppt : POINT* 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)。