GetPointerInfo

関数

指定したポインタの入力情報を取得する。

DLLUSER32.dll呼出規約winapiSetLastErrorあり対応OSwindows8.0

シグネチャ

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

BOOL GetPointerInfo(
    DWORD pointerId,
    POINTER_INFO* pointerInfo
);

パラメーター

名前	型	方向	説明
pointerId	DWORD	in	情報を取得する対象ポインタのIDを指定する。
pointerInfo	POINTER_INFO*	out	ポインタの基本情報を受け取るPOINTER_INFO構造体へのポインタ。

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL GetPointerInfo(
    DWORD pointerId,
    POINTER_INFO* pointerInfo
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool GetPointerInfo(
    uint pointerId,   // DWORD
    IntPtr pointerInfo   // POINTER_INFO* out
);

<DllImport("USER32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetPointerInfo(
    pointerId As UInteger,   ' DWORD
    pointerInfo As IntPtr   ' POINTER_INFO* out
) As Boolean
End Function

' pointerId : DWORD
' pointerInfo : POINTER_INFO* out
Declare PtrSafe Function GetPointerInfo Lib "user32" ( _
    ByVal pointerId As Long, _
    ByVal pointerInfo 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

GetPointerInfo = ctypes.windll.user32.GetPointerInfo
GetPointerInfo.restype = wintypes.BOOL
GetPointerInfo.argtypes = [
    wintypes.DWORD,  # pointerId : DWORD
    ctypes.c_void_p,  # pointerInfo : POINTER_INFO* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
GetPointerInfo = Fiddle::Function.new(
  lib['GetPointerInfo'],
  [
    -Fiddle::TYPE_INT,  # pointerId : DWORD
    Fiddle::TYPE_VOIDP,  # pointerInfo : POINTER_INFO* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn GetPointerInfo(
        pointerId: u32,  // DWORD
        pointerInfo: *mut POINTER_INFO  // POINTER_INFO* 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 GetPointerInfo(uint pointerId, IntPtr pointerInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_GetPointerInfo' -Namespace Win32 -PassThru
# $api::GetPointerInfo(pointerId, pointerInfo)

#uselib "USER32.dll"
#func global GetPointerInfo "GetPointerInfo" sptr, sptr
; GetPointerInfo pointerId, varptr(pointerInfo)   ; 戻り値は stat
; pointerId : DWORD -> "sptr"
; pointerInfo : POINTER_INFO* 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 GetPointerInfo "GetPointerInfo" int, var
; res = GetPointerInfo(pointerId, pointerInfo)
; pointerId : DWORD -> "int"
; pointerInfo : POINTER_INFO* 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 GetPointerInfo "GetPointerInfo" int, sptr
; res = GetPointerInfo(pointerId, varptr(pointerInfo))
; pointerId : DWORD -> "int"
; pointerInfo : POINTER_INFO* 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 GetPointerInfo(DWORD pointerId, POINTER_INFO* pointerInfo)
#uselib "USER32.dll"
#cfunc global GetPointerInfo "GetPointerInfo" int, var
; res = GetPointerInfo(pointerId, pointerInfo)
; pointerId : DWORD -> "int"
; pointerInfo : POINTER_INFO* 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 GetPointerInfo(DWORD pointerId, POINTER_INFO* pointerInfo)
#uselib "USER32.dll"
#cfunc global GetPointerInfo "GetPointerInfo" int, intptr
; res = GetPointerInfo(pointerId, varptr(pointerInfo))
; pointerId : DWORD -> "int"
; pointerInfo : POINTER_INFO* 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")
	procGetPointerInfo = user32.NewProc("GetPointerInfo")
)

// pointerId (DWORD), pointerInfo (POINTER_INFO* out)
r1, _, err := procGetPointerInfo.Call(
	uintptr(pointerId),
	uintptr(pointerInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetPointerInfo(
  pointerId: DWORD;   // DWORD
  pointerInfo: Pointer   // POINTER_INFO* out
): BOOL; stdcall;
  external 'USER32.dll' name 'GetPointerInfo';

result := DllCall("USER32\GetPointerInfo"
    , "UInt", pointerId   ; DWORD
    , "Ptr", pointerInfo   ; POINTER_INFO* out
    , "Int")   ; return: BOOL

●GetPointerInfo(pointerId, pointerInfo) = DLL("USER32.dll", "bool GetPointerInfo(dword, void*)")
# 呼び出し: GetPointerInfo(pointerId, pointerInfo)
# pointerId : DWORD -> "dword"
# pointerInfo : POINTER_INFO* 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)。