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GdipDrawLineI

関数
指定ペンで整数座標の2点間に直線を描画する。
DLLgdiplus.dll呼出規約winapi

シグネチャ

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

Status GdipDrawLineI(
    GpGraphics* graphics,
    GpPen* pen,
    INT x1,
    INT y1,
    INT x2,
    INT y2
);

パラメーター

名前型方向説明
graphicsGpGraphics*inout描画先のGpGraphicsオブジェクトへのポインタ。
penGpPen*inout線の色や幅を定めるGpPenオブジェクトへのポインタ。
x1INTin線分の始点X座標(整数)。
y1INTin線分の始点Y座標(整数)。
x2INTin線分の終点X座標(整数)。
y2INTin線分の終点Y座標(整数)。

戻り値の型: Status

各言語での呼び出し定義

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

Status GdipDrawLineI(
    GpGraphics* graphics,
    GpPen* pen,
    INT x1,
    INT y1,
    INT x2,
    INT y2
);
[DllImport("gdiplus.dll", ExactSpelling = true)]
static extern int GdipDrawLineI(
    IntPtr graphics,   // GpGraphics* in/out
    IntPtr pen,   // GpPen* in/out
    int x1,   // INT
    int y1,   // INT
    int x2,   // INT
    int y2   // INT
);
<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipDrawLineI(
    graphics As IntPtr,   ' GpGraphics* in/out
    pen As IntPtr,   ' GpPen* in/out
    x1 As Integer,   ' INT
    y1 As Integer,   ' INT
    x2 As Integer,   ' INT
    y2 As Integer   ' INT
) As Integer
End Function
' graphics : GpGraphics* in/out
' pen : GpPen* in/out
' x1 : INT
' y1 : INT
' x2 : INT
' y2 : INT
Declare PtrSafe Function GdipDrawLineI Lib "gdiplus" ( _
    ByVal graphics As LongPtr, _
    ByVal pen As LongPtr, _
    ByVal x1 As Long, _
    ByVal y1 As Long, _
    ByVal x2 As Long, _
    ByVal y2 As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。
import ctypes
from ctypes import wintypes

GdipDrawLineI = ctypes.windll.gdiplus.GdipDrawLineI
GdipDrawLineI.restype = ctypes.c_int
GdipDrawLineI.argtypes = [
    ctypes.c_void_p,  # graphics : GpGraphics* in/out
    ctypes.c_void_p,  # pen : GpPen* in/out
    ctypes.c_int,  # x1 : INT
    ctypes.c_int,  # y1 : INT
    ctypes.c_int,  # x2 : INT
    ctypes.c_int,  # y2 : INT
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipDrawLineI = Fiddle::Function.new(
  lib['GdipDrawLineI'],
  [
    Fiddle::TYPE_VOIDP,  # graphics : GpGraphics* in/out
    Fiddle::TYPE_VOIDP,  # pen : GpPen* in/out
    Fiddle::TYPE_INT,  # x1 : INT
    Fiddle::TYPE_INT,  # y1 : INT
    Fiddle::TYPE_INT,  # x2 : INT
    Fiddle::TYPE_INT,  # y2 : INT
  ],
  Fiddle::TYPE_INT)
#[link(name = "gdiplus")]
extern "system" {
    fn GdipDrawLineI(
        graphics: *mut GpGraphics,  // GpGraphics* in/out
        pen: *mut GpPen,  // GpPen* in/out
        x1: i32,  // INT
        y1: i32,  // INT
        x2: i32,  // INT
        y2: i32  // INT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipDrawLineI(IntPtr graphics, IntPtr pen, int x1, int y1, int x2, int y2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipDrawLineI' -Namespace Win32 -PassThru
# $api::GdipDrawLineI(graphics, pen, x1, y1, x2, y2)
#uselib "gdiplus.dll"
#func global GdipDrawLineI "GdipDrawLineI" sptr, sptr, sptr, sptr, sptr, sptr
; GdipDrawLineI varptr(graphics), varptr(pen), x1, y1, x2, y2   ; 戻り値は stat
; graphics : GpGraphics* in/out -> "sptr"
; pen : GpPen* in/out -> "sptr"
; x1 : INT -> "sptr"
; y1 : INT -> "sptr"
; x2 : INT -> "sptr"
; y2 : INT -> "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 "gdiplus.dll"
#cfunc global GdipDrawLineI "GdipDrawLineI" var, var, int, int, int, int
; res = GdipDrawLineI(graphics, pen, x1, y1, x2, y2)
; graphics : GpGraphics* in/out -> "var"
; pen : GpPen* in/out -> "var"
; x1 : INT -> "int"
; y1 : INT -> "int"
; x2 : INT -> "int"
; y2 : INT -> "int"
; ※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。
出力引数: 
; Status GdipDrawLineI(GpGraphics* graphics, GpPen* pen, INT x1, INT y1, INT x2, INT y2)
#uselib "gdiplus.dll"
#cfunc global GdipDrawLineI "GdipDrawLineI" var, var, int, int, int, int
; res = GdipDrawLineI(graphics, pen, x1, y1, x2, y2)
; graphics : GpGraphics* in/out -> "var"
; pen : GpPen* in/out -> "var"
; x1 : INT -> "int"
; y1 : INT -> "int"
; x2 : INT -> "int"
; y2 : INT -> "int"
; ※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")
	procGdipDrawLineI = gdiplus.NewProc("GdipDrawLineI")
)

// graphics (GpGraphics* in/out), pen (GpPen* in/out), x1 (INT), y1 (INT), x2 (INT), y2 (INT)
r1, _, err := procGdipDrawLineI.Call(
	uintptr(graphics),
	uintptr(pen),
	uintptr(x1),
	uintptr(y1),
	uintptr(x2),
	uintptr(y2),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status
function GdipDrawLineI(
  graphics: Pointer;   // GpGraphics* in/out
  pen: Pointer;   // GpPen* in/out
  x1: Integer;   // INT
  y1: Integer;   // INT
  x2: Integer;   // INT
  y2: Integer   // INT
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipDrawLineI';
result := DllCall("gdiplus\GdipDrawLineI"
    , "Ptr", graphics   ; GpGraphics* in/out
    , "Ptr", pen   ; GpPen* in/out
    , "Int", x1   ; INT
    , "Int", y1   ; INT
    , "Int", x2   ; INT
    , "Int", y2   ; INT
    , "Int")   ; return: Status
●GdipDrawLineI(graphics, pen, x1, y1, x2, y2) = DLL("gdiplus.dll", "int GdipDrawLineI(void*, void*, int, int, int, int)")
# 呼び出し: GdipDrawLineI(graphics, pen, x1, y1, x2, y2)
# graphics : GpGraphics* in/out -> "void*"
# pen : GpPen* in/out -> "void*"
# x1 : INT -> "int"
# y1 : INT -> "int"
# x2 : INT -> "int"
# y2 : INT -> "int"
# 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)。
const std = @import("std");

extern "gdiplus" fn GdipDrawLineI(
    graphics: [*c]GpGraphics, // GpGraphics* in/out
    pen: [*c]GpPen, // GpPen* in/out
    x1: i32, // INT
    y1: i32, // INT
    x2: i32, // INT
    y2: i32 // INT
) callconv(std.os.windows.WINAPI) i32;
proc GdipDrawLineI(
    graphics: ptr GpGraphics,  # GpGraphics* in/out
    pen: ptr GpPen,  # GpPen* in/out
    x1: int32,  # INT
    y1: int32,  # INT
    x2: int32,  # INT
    y2: int32  # INT
): int32 {.importc: "GdipDrawLineI", stdcall, dynlib: "gdiplus.dll".}
pragma(lib, "gdiplus");
extern(Windows)
int GdipDrawLineI(
    GpGraphics* graphics,   // GpGraphics* in/out
    GpPen* pen,   // GpPen* in/out
    int x1,   // INT
    int y1,   // INT
    int x2,   // INT
    int y2   // INT
);
ccall((:GdipDrawLineI, "gdiplus.dll"), stdcall, Int32,
      (Ptr{GpGraphics}, Ptr{GpPen}, Int32, Int32, Int32, Int32),
      graphics, pen, x1, y1, x2, y2)
# graphics : GpGraphics* in/out -> Ptr{GpGraphics}
# pen : GpPen* in/out -> Ptr{GpPen}
# x1 : INT -> Int32
# y1 : INT -> Int32
# x2 : INT -> Int32
# y2 : INT -> Int32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
int32_t GdipDrawLineI(
    void* graphics,
    void* pen,
    int32_t x1,
    int32_t y1,
    int32_t x2,
    int32_t y2);
]]
local gdiplus = ffi.load("gdiplus")
-- gdiplus.GdipDrawLineI(graphics, pen, x1, y1, x2, y2)
-- graphics : GpGraphics* in/out
-- pen : GpPen* in/out
-- x1 : INT
-- y1 : INT
-- x2 : INT
-- y2 : INT
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
const koffi = require('koffi');
const lib = koffi.load('gdiplus.dll');
const GdipDrawLineI = lib.func('__stdcall', 'GdipDrawLineI', 'int32_t', ['void *', 'void *', 'int32_t', 'int32_t', 'int32_t', 'int32_t']);
// GdipDrawLineI(graphics, pen, x1, y1, x2, y2)
// graphics : GpGraphics* in/out -> 'void *'
// pen : GpPen* in/out -> 'void *'
// x1 : INT -> 'int32_t'
// y1 : INT -> 'int32_t'
// x2 : INT -> 'int32_t'
// y2 : INT -> 'int32_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。
const lib = Deno.dlopen("gdiplus.dll", {
  GdipDrawLineI: { parameters: ["pointer", "pointer", "i32", "i32", "i32", "i32"], result: "i32" },
});
// lib.symbols.GdipDrawLineI(graphics, pen, x1, y1, x2, y2)
// graphics : GpGraphics* in/out -> "pointer"
// pen : GpPen* in/out -> "pointer"
// x1 : INT -> "i32"
// y1 : INT -> "i32"
// x2 : INT -> "i32"
// y2 : INT -> "i32"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。
<?php
$ffi = FFI::cdef(<<<C
int32_t GdipDrawLineI(
    void* graphics,
    void* pen,
    int32_t x1,
    int32_t y1,
    int32_t x2,
    int32_t y2);
C, "gdiplus.dll");
// $ffi->GdipDrawLineI(graphics, pen, x1, y1, x2, y2);
// graphics : GpGraphics* in/out
// pen : GpPen* in/out
// x1 : INT
// y1 : INT
// x2 : INT
// y2 : INT
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。
import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Gdiplus extends StdCallLibrary {
    Gdiplus INSTANCE = Native.load("gdiplus", Gdiplus.class);
    int GdipDrawLineI(
        Pointer graphics,   // GpGraphics* in/out
        Pointer pen,   // GpPen* in/out
        int x1,   // INT
        int y1,   // INT
        int x2,   // INT
        int y2   // INT
    );
}
@[Link("gdiplus")]
lib Libgdiplus
  fun GdipDrawLineI = GdipDrawLineI(
    graphics : GpGraphics*,   # GpGraphics* in/out
    pen : GpPen*,   # GpPen* in/out
    x1 : Int32,   # INT
    y1 : Int32,   # INT
    x2 : Int32,   # INT
    y2 : Int32   # INT
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。
import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef GdipDrawLineINative = Int32 Function(Pointer<Void>, Pointer<Void>, Int32, Int32, Int32, Int32);
typedef GdipDrawLineIDart = int Function(Pointer<Void>, Pointer<Void>, int, int, int, int);
final GdipDrawLineI = DynamicLibrary.open('gdiplus.dll')
    .lookupFunction<GdipDrawLineINative, GdipDrawLineIDart>('GdipDrawLineI');
// graphics : GpGraphics* in/out -> Pointer<Void>
// pen : GpPen* in/out -> Pointer<Void>
// x1 : INT -> Int32
// y1 : INT -> Int32
// x2 : INT -> Int32
// y2 : INT -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function GdipDrawLineI(
  graphics: Pointer;   // GpGraphics* in/out
  pen: Pointer;   // GpPen* in/out
  x1: Integer;   // INT
  y1: Integer;   // INT
  x2: Integer;   // INT
  y2: Integer   // INT
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipDrawLineI';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "GdipDrawLineI"
  c_GdipDrawLineI :: Ptr () -> Ptr () -> Int32 -> Int32 -> Int32 -> Int32 -> IO Int32
-- graphics : GpGraphics* in/out -> Ptr ()
-- pen : GpPen* in/out -> Ptr ()
-- x1 : INT -> Int32
-- y1 : INT -> Int32
-- x2 : INT -> Int32
-- y2 : INT -> Int32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。
open Ctypes
open Foreign

let gdipdrawlinei =
  foreign "GdipDrawLineI"
    ((ptr void) @-> (ptr void) @-> int32_t @-> int32_t @-> int32_t @-> int32_t @-> returning int32_t)
(* graphics : GpGraphics* in/out -> (ptr void) *)
(* pen : GpPen* in/out -> (ptr void) *)
(* x1 : INT -> int32_t *)
(* y1 : INT -> int32_t *)
(* x2 : INT -> int32_t *)
(* y2 : INT -> int32_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)
(cffi:define-foreign-library gdiplus (t "gdiplus.dll"))
(cffi:use-foreign-library gdiplus)

(cffi:defcfun ("GdipDrawLineI" gdip-draw-line-i :convention :stdcall) :int32
  (graphics :pointer)   ; GpGraphics* in/out
  (pen :pointer)   ; GpPen* in/out
  (x1 :int32)   ; INT
  (y1 :int32)   ; INT
  (x2 :int32)   ; INT
  (y2 :int32))   ; INT
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $GdipDrawLineI = Win32::API::More->new('gdiplus',
    'int GdipDrawLineI(LPVOID graphics, LPVOID pen, int x1, int y1, int x2, int y2)');
# my $ret = $GdipDrawLineI->Call($graphics, $pen, $x1, $y1, $x2, $y2);
# graphics : GpGraphics* in/out -> LPVOID
# pen : GpPen* in/out -> LPVOID
# x1 : INT -> int
# y1 : INT -> int
# x2 : INT -> int
# y2 : INT -> int
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

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