Win32 API 日本語リファレンス
ホームUI.HiDpi › IsValidDpiAwarenessContext

IsValidDpiAwarenessContext

関数
指定したDPI認識コンテキストが有効かどうかを判定する。
DLLUSER32.dll呼出規約winapi対応OSWindows 10 以降

シグネチャ

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

BOOL IsValidDpiAwarenessContext(
    DPI_AWARENESS_CONTEXT value
);

パラメーター

名前方向
valueDPI_AWARENESS_CONTEXTin

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL IsValidDpiAwarenessContext(
    DPI_AWARENESS_CONTEXT value
);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", ExactSpelling = true)]
static extern bool IsValidDpiAwarenessContext(
    IntPtr value   // DPI_AWARENESS_CONTEXT
);
<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function IsValidDpiAwarenessContext(
    value As IntPtr   ' DPI_AWARENESS_CONTEXT
) As Boolean
End Function
' value : DPI_AWARENESS_CONTEXT
Declare PtrSafe Function IsValidDpiAwarenessContext Lib "user32" ( _
    ByVal value 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

IsValidDpiAwarenessContext = ctypes.windll.user32.IsValidDpiAwarenessContext
IsValidDpiAwarenessContext.restype = wintypes.BOOL
IsValidDpiAwarenessContext.argtypes = [
    wintypes.HANDLE,  # value : DPI_AWARENESS_CONTEXT
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
IsValidDpiAwarenessContext = Fiddle::Function.new(
  lib['IsValidDpiAwarenessContext'],
  [
    Fiddle::TYPE_VOIDP,  # value : DPI_AWARENESS_CONTEXT
  ],
  Fiddle::TYPE_INT)
#[link(name = "user32")]
extern "system" {
    fn IsValidDpiAwarenessContext(
        value: *mut core::ffi::c_void  // DPI_AWARENESS_CONTEXT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll")]
public static extern bool IsValidDpiAwarenessContext(IntPtr value);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_IsValidDpiAwarenessContext' -Namespace Win32 -PassThru
# $api::IsValidDpiAwarenessContext(value)
#uselib "USER32.dll"
#func global IsValidDpiAwarenessContext "IsValidDpiAwarenessContext" sptr
; IsValidDpiAwarenessContext value   ; 戻り値は stat
; value : DPI_AWARENESS_CONTEXT -> "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。
#uselib "USER32.dll"
#cfunc global IsValidDpiAwarenessContext "IsValidDpiAwarenessContext" sptr
; res = IsValidDpiAwarenessContext(value)
; value : DPI_AWARENESS_CONTEXT -> "sptr"
; BOOL IsValidDpiAwarenessContext(DPI_AWARENESS_CONTEXT value)
#uselib "USER32.dll"
#cfunc global IsValidDpiAwarenessContext "IsValidDpiAwarenessContext" intptr
; res = IsValidDpiAwarenessContext(value)
; value : DPI_AWARENESS_CONTEXT -> "intptr"
import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procIsValidDpiAwarenessContext = user32.NewProc("IsValidDpiAwarenessContext")
)

// value (DPI_AWARENESS_CONTEXT)
r1, _, err := procIsValidDpiAwarenessContext.Call(
	uintptr(value),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL
function IsValidDpiAwarenessContext(
  value: THandle   // DPI_AWARENESS_CONTEXT
): BOOL; stdcall;
  external 'USER32.dll' name 'IsValidDpiAwarenessContext';
result := DllCall("USER32\IsValidDpiAwarenessContext"
    , "Ptr", value   ; DPI_AWARENESS_CONTEXT
    , "Int")   ; return: BOOL
●IsValidDpiAwarenessContext(value) = DLL("USER32.dll", "bool IsValidDpiAwarenessContext(void*)")
# 呼び出し: IsValidDpiAwarenessContext(value)
# value : DPI_AWARENESS_CONTEXT -> "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)。