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ScrollWindowEx

関数

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DLLUSER32.dll呼出規約winapiSetLastErrorあり対応OSWindows Vista 以降

シグネチャ

// USER32.dll
#include <windows.h>

INT ScrollWindowEx(
    HWND hWnd,
    INT dx,
    INT dy,
    const RECT* prcScroll,   // optional
    const RECT* prcClip,   // optional
    HRGN hrgnUpdate,   // optional
    RECT* prcUpdate,   // optional
    SCROLL_WINDOW_FLAGS flags
);

パラメーター

名前	型	方向
hWnd	HWND	in
dx	INT	in
dy	INT	in
prcScroll	RECT*	inoptional
prcClip	RECT*	inoptional
hrgnUpdate	HRGN	inoptional
prcUpdate	RECT*	outoptional
flags	SCROLL_WINDOW_FLAGS	in

戻り値の型: INT

各言語での呼び出し定義

// USER32.dll
#include <windows.h>

INT ScrollWindowEx(
    HWND hWnd,
    INT dx,
    INT dy,
    const RECT* prcScroll,   // optional
    const RECT* prcClip,   // optional
    HRGN hrgnUpdate,   // optional
    RECT* prcUpdate,   // optional
    SCROLL_WINDOW_FLAGS flags
);

[DllImport("USER32.dll", SetLastError = true, ExactSpelling = true)]
static extern int ScrollWindowEx(
    IntPtr hWnd,   // HWND
    int dx,   // INT
    int dy,   // INT
    IntPtr prcScroll,   // RECT* optional
    IntPtr prcClip,   // RECT* optional
    IntPtr hrgnUpdate,   // HRGN optional
    IntPtr prcUpdate,   // RECT* optional, out
    uint flags   // SCROLL_WINDOW_FLAGS
);

<DllImport("USER32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function ScrollWindowEx(
    hWnd As IntPtr,   ' HWND
    dx As Integer,   ' INT
    dy As Integer,   ' INT
    prcScroll As IntPtr,   ' RECT* optional
    prcClip As IntPtr,   ' RECT* optional
    hrgnUpdate As IntPtr,   ' HRGN optional
    prcUpdate As IntPtr,   ' RECT* optional, out
    flags As UInteger   ' SCROLL_WINDOW_FLAGS
) As Integer
End Function

' hWnd : HWND
' dx : INT
' dy : INT
' prcScroll : RECT* optional
' prcClip : RECT* optional
' hrgnUpdate : HRGN optional
' prcUpdate : RECT* optional, out
' flags : SCROLL_WINDOW_FLAGS
Declare PtrSafe Function ScrollWindowEx Lib "user32" ( _
    ByVal hWnd As LongPtr, _
    ByVal dx As Long, _
    ByVal dy As Long, _
    ByVal prcScroll As LongPtr, _
    ByVal prcClip As LongPtr, _
    ByVal hrgnUpdate As LongPtr, _
    ByVal prcUpdate As LongPtr, _
    ByVal flags 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

ScrollWindowEx = ctypes.windll.user32.ScrollWindowEx
ScrollWindowEx.restype = ctypes.c_int
ScrollWindowEx.argtypes = [
    wintypes.HANDLE,  # hWnd : HWND
    ctypes.c_int,  # dx : INT
    ctypes.c_int,  # dy : INT
    ctypes.c_void_p,  # prcScroll : RECT* optional
    ctypes.c_void_p,  # prcClip : RECT* optional
    wintypes.HANDLE,  # hrgnUpdate : HRGN optional
    ctypes.c_void_p,  # prcUpdate : RECT* optional, out
    wintypes.DWORD,  # flags : SCROLL_WINDOW_FLAGS
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
ScrollWindowEx = Fiddle::Function.new(
  lib['ScrollWindowEx'],
  [
    Fiddle::TYPE_VOIDP,  # hWnd : HWND
    Fiddle::TYPE_INT,  # dx : INT
    Fiddle::TYPE_INT,  # dy : INT
    Fiddle::TYPE_VOIDP,  # prcScroll : RECT* optional
    Fiddle::TYPE_VOIDP,  # prcClip : RECT* optional
    Fiddle::TYPE_VOIDP,  # hrgnUpdate : HRGN optional
    Fiddle::TYPE_VOIDP,  # prcUpdate : RECT* optional, out
    -Fiddle::TYPE_INT,  # flags : SCROLL_WINDOW_FLAGS
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn ScrollWindowEx(
        hWnd: *mut core::ffi::c_void,  // HWND
        dx: i32,  // INT
        dy: i32,  // INT
        prcScroll: *const RECT,  // RECT* optional
        prcClip: *const RECT,  // RECT* optional
        hrgnUpdate: *mut core::ffi::c_void,  // HRGN optional
        prcUpdate: *mut RECT,  // RECT* optional, out
        flags: u32  // SCROLL_WINDOW_FLAGS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll", SetLastError = true)]
public static extern int ScrollWindowEx(IntPtr hWnd, int dx, int dy, IntPtr prcScroll, IntPtr prcClip, IntPtr hrgnUpdate, IntPtr prcUpdate, uint flags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_ScrollWindowEx' -Namespace Win32 -PassThru
# $api::ScrollWindowEx(hWnd, dx, dy, prcScroll, prcClip, hrgnUpdate, prcUpdate, flags)

#uselib "USER32.dll"
#func global ScrollWindowEx "ScrollWindowEx" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; ScrollWindowEx hWnd, dx, dy, varptr(prcScroll), varptr(prcClip), hrgnUpdate, varptr(prcUpdate), flags   ; 戻り値は stat
; hWnd : HWND -> "sptr"
; dx : INT -> "sptr"
; dy : INT -> "sptr"
; prcScroll : RECT* optional -> "sptr"
; prcClip : RECT* optional -> "sptr"
; hrgnUpdate : HRGN optional -> "sptr"
; prcUpdate : RECT* optional, out -> "sptr"
; flags : SCROLL_WINDOW_FLAGS -> "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 "USER32.dll"
#cfunc global ScrollWindowEx "ScrollWindowEx" sptr, int, int, var, var, sptr, var, int
; res = ScrollWindowEx(hWnd, dx, dy, prcScroll, prcClip, hrgnUpdate, prcUpdate, flags)
; hWnd : HWND -> "sptr"
; dx : INT -> "int"
; dy : INT -> "int"
; prcScroll : RECT* optional -> "var"
; prcClip : RECT* optional -> "var"
; hrgnUpdate : HRGN optional -> "sptr"
; prcUpdate : RECT* optional, out -> "var"
; flags : SCROLL_WINDOW_FLAGS -> "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。#uselib "USER32.dll"
#cfunc global ScrollWindowEx "ScrollWindowEx" sptr, int, int, sptr, sptr, sptr, sptr, int
; res = ScrollWindowEx(hWnd, dx, dy, varptr(prcScroll), varptr(prcClip), hrgnUpdate, varptr(prcUpdate), flags)
; hWnd : HWND -> "sptr"
; dx : INT -> "int"
; dy : INT -> "int"
; prcScroll : RECT* optional -> "sptr"
; prcClip : RECT* optional -> "sptr"
; hrgnUpdate : HRGN optional -> "sptr"
; prcUpdate : RECT* optional, out -> "sptr"
; flags : SCROLL_WINDOW_FLAGS -> "int"
; ※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:

; INT ScrollWindowEx(HWND hWnd, INT dx, INT dy, RECT* prcScroll, RECT* prcClip, HRGN hrgnUpdate, RECT* prcUpdate, SCROLL_WINDOW_FLAGS flags)
#uselib "USER32.dll"
#cfunc global ScrollWindowEx "ScrollWindowEx" intptr, int, int, var, var, intptr, var, int
; res = ScrollWindowEx(hWnd, dx, dy, prcScroll, prcClip, hrgnUpdate, prcUpdate, flags)
; hWnd : HWND -> "intptr"
; dx : INT -> "int"
; dy : INT -> "int"
; prcScroll : RECT* optional -> "var"
; prcClip : RECT* optional -> "var"
; hrgnUpdate : HRGN optional -> "intptr"
; prcUpdate : RECT* optional, out -> "var"
; flags : SCROLL_WINDOW_FLAGS -> "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。; INT ScrollWindowEx(HWND hWnd, INT dx, INT dy, RECT* prcScroll, RECT* prcClip, HRGN hrgnUpdate, RECT* prcUpdate, SCROLL_WINDOW_FLAGS flags)
#uselib "USER32.dll"
#cfunc global ScrollWindowEx "ScrollWindowEx" intptr, int, int, intptr, intptr, intptr, intptr, int
; res = ScrollWindowEx(hWnd, dx, dy, varptr(prcScroll), varptr(prcClip), hrgnUpdate, varptr(prcUpdate), flags)
; hWnd : HWND -> "intptr"
; dx : INT -> "int"
; dy : INT -> "int"
; prcScroll : RECT* optional -> "intptr"
; prcClip : RECT* optional -> "intptr"
; hrgnUpdate : HRGN optional -> "intptr"
; prcUpdate : RECT* optional, out -> "intptr"
; flags : SCROLL_WINDOW_FLAGS -> "int"
; ※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 (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procScrollWindowEx = user32.NewProc("ScrollWindowEx")
)

// hWnd (HWND), dx (INT), dy (INT), prcScroll (RECT* optional), prcClip (RECT* optional), hrgnUpdate (HRGN optional), prcUpdate (RECT* optional, out), flags (SCROLL_WINDOW_FLAGS)
r1, _, err := procScrollWindowEx.Call(
	uintptr(hWnd),
	uintptr(dx),
	uintptr(dy),
	uintptr(prcScroll),
	uintptr(prcClip),
	uintptr(hrgnUpdate),
	uintptr(prcUpdate),
	uintptr(flags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function ScrollWindowEx(
  hWnd: THandle;   // HWND
  dx: Integer;   // INT
  dy: Integer;   // INT
  prcScroll: Pointer;   // RECT* optional
  prcClip: Pointer;   // RECT* optional
  hrgnUpdate: THandle;   // HRGN optional
  prcUpdate: Pointer;   // RECT* optional, out
  flags: DWORD   // SCROLL_WINDOW_FLAGS
): Integer; stdcall;
  external 'USER32.dll' name 'ScrollWindowEx';

result := DllCall("USER32\ScrollWindowEx"
    , "Ptr", hWnd   ; HWND
    , "Int", dx   ; INT
    , "Int", dy   ; INT
    , "Ptr", prcScroll   ; RECT* optional
    , "Ptr", prcClip   ; RECT* optional
    , "Ptr", hrgnUpdate   ; HRGN optional
    , "Ptr", prcUpdate   ; RECT* optional, out
    , "UInt", flags   ; SCROLL_WINDOW_FLAGS
    , "Int")   ; return: INT

●ScrollWindowEx(hWnd, dx, dy, prcScroll, prcClip, hrgnUpdate, prcUpdate, flags) = DLL("USER32.dll", "int ScrollWindowEx(void*, int, int, void*, void*, void*, void*, dword)")
# 呼び出し: ScrollWindowEx(hWnd, dx, dy, prcScroll, prcClip, hrgnUpdate, prcUpdate, flags)
# hWnd : HWND -> "void*"
# dx : INT -> "int"
# dy : INT -> "int"
# prcScroll : RECT* optional -> "void*"
# prcClip : RECT* optional -> "void*"
# hrgnUpdate : HRGN optional -> "void*"
# prcUpdate : RECT* optional, out -> "void*"
# flags : SCROLL_WINDOW_FLAGS -> "dword"
# 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)。