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GetWindowPlacement

関数

ウィンドウの表示状態と位置情報を取得する。

DLLUSER32.dll呼出規約winapiSetLastErrorあり対応OSWindows 2000 以降

シグネチャ

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

BOOL GetWindowPlacement(
    HWND hWnd,
    WINDOWPLACEMENT* lpwndpl
);

パラメーター

名前	型	方向	説明
hWnd	HWND	in	配置情報を取得する対象のウィンドウハンドル。
lpwndpl	WINDOWPLACEMENT*	inout	取得した表示状態と通常/最小化/最大化位置を受け取るWINDOWPLACEMENT構造体へのポインタ。lengthを設定する。

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL GetWindowPlacement(
    HWND hWnd,
    WINDOWPLACEMENT* lpwndpl
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool GetWindowPlacement(
    IntPtr hWnd,   // HWND
    IntPtr lpwndpl   // WINDOWPLACEMENT* in/out
);

<DllImport("USER32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetWindowPlacement(
    hWnd As IntPtr,   ' HWND
    lpwndpl As IntPtr   ' WINDOWPLACEMENT* in/out
) As Boolean
End Function

' hWnd : HWND
' lpwndpl : WINDOWPLACEMENT* in/out
Declare PtrSafe Function GetWindowPlacement Lib "user32" ( _
    ByVal hWnd As LongPtr, _
    ByVal lpwndpl 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

GetWindowPlacement = ctypes.windll.user32.GetWindowPlacement
GetWindowPlacement.restype = wintypes.BOOL
GetWindowPlacement.argtypes = [
    wintypes.HANDLE,  # hWnd : HWND
    ctypes.c_void_p,  # lpwndpl : WINDOWPLACEMENT* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
GetWindowPlacement = Fiddle::Function.new(
  lib['GetWindowPlacement'],
  [
    Fiddle::TYPE_VOIDP,  # hWnd : HWND
    Fiddle::TYPE_VOIDP,  # lpwndpl : WINDOWPLACEMENT* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn GetWindowPlacement(
        hWnd: *mut core::ffi::c_void,  // HWND
        lpwndpl: *mut WINDOWPLACEMENT  // WINDOWPLACEMENT* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", SetLastError = true)]
public static extern bool GetWindowPlacement(IntPtr hWnd, IntPtr lpwndpl);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_GetWindowPlacement' -Namespace Win32 -PassThru
# $api::GetWindowPlacement(hWnd, lpwndpl)

#uselib "USER32.dll"
#func global GetWindowPlacement "GetWindowPlacement" sptr, sptr
; GetWindowPlacement hWnd, varptr(lpwndpl)   ; 戻り値は stat
; hWnd : HWND -> "sptr"
; lpwndpl : WINDOWPLACEMENT* in/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 "USER32.dll"
#cfunc global GetWindowPlacement "GetWindowPlacement" sptr, var
; res = GetWindowPlacement(hWnd, lpwndpl)
; hWnd : HWND -> "sptr"
; lpwndpl : WINDOWPLACEMENT* in/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 "USER32.dll"
#cfunc global GetWindowPlacement "GetWindowPlacement" sptr, sptr
; res = GetWindowPlacement(hWnd, varptr(lpwndpl))
; hWnd : HWND -> "sptr"
; lpwndpl : WINDOWPLACEMENT* in/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 GetWindowPlacement(HWND hWnd, WINDOWPLACEMENT* lpwndpl)
#uselib "USER32.dll"
#cfunc global GetWindowPlacement "GetWindowPlacement" intptr, var
; res = GetWindowPlacement(hWnd, lpwndpl)
; hWnd : HWND -> "intptr"
; lpwndpl : WINDOWPLACEMENT* in/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 GetWindowPlacement(HWND hWnd, WINDOWPLACEMENT* lpwndpl)
#uselib "USER32.dll"
#cfunc global GetWindowPlacement "GetWindowPlacement" intptr, intptr
; res = GetWindowPlacement(hWnd, varptr(lpwndpl))
; hWnd : HWND -> "intptr"
; lpwndpl : WINDOWPLACEMENT* in/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 (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procGetWindowPlacement = user32.NewProc("GetWindowPlacement")
)

// hWnd (HWND), lpwndpl (WINDOWPLACEMENT* in/out)
r1, _, err := procGetWindowPlacement.Call(
	uintptr(hWnd),
	uintptr(lpwndpl),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetWindowPlacement(
  hWnd: THandle;   // HWND
  lpwndpl: Pointer   // WINDOWPLACEMENT* in/out
): BOOL; stdcall;
  external 'USER32.dll' name 'GetWindowPlacement';

result := DllCall("USER32\GetWindowPlacement"
    , "Ptr", hWnd   ; HWND
    , "Ptr", lpwndpl   ; WINDOWPLACEMENT* in/out
    , "Int")   ; return: BOOL

●GetWindowPlacement(hWnd, lpwndpl) = DLL("USER32.dll", "bool GetWindowPlacement(void*, void*)")
# 呼び出し: GetWindowPlacement(hWnd, lpwndpl)
# hWnd : HWND -> "void*"
# lpwndpl : WINDOWPLACEMENT* in/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)。