ホーム › System.Variant › VariantToBooleanWithDefault

VariantToBooleanWithDefault

関数

VARIANTをブール値へ変換し、失敗時は既定値を返す。

DLLPROPSYS.dll呼出規約winapi対応OSWindows XP 以降

シグネチャ

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

BOOL VariantToBooleanWithDefault(
    const VARIANT* varIn,
    BOOL fDefault
);

パラメーター

名前	型	方向
varIn	VARIANT*	in
fDefault	BOOL	in

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL VariantToBooleanWithDefault(
    const VARIANT* varIn,
    BOOL fDefault
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("PROPSYS.dll", ExactSpelling = true)]
static extern bool VariantToBooleanWithDefault(
    IntPtr varIn,   // VARIANT*
    bool fDefault   // BOOL
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function VariantToBooleanWithDefault(
    varIn As IntPtr,   ' VARIANT*
    fDefault As Boolean   ' BOOL
) As Boolean
End Function

' varIn : VARIANT*
' fDefault : BOOL
Declare PtrSafe Function VariantToBooleanWithDefault Lib "propsys" ( _
    ByVal varIn As LongPtr, _
    ByVal fDefault 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

VariantToBooleanWithDefault = ctypes.windll.propsys.VariantToBooleanWithDefault
VariantToBooleanWithDefault.restype = wintypes.BOOL
VariantToBooleanWithDefault.argtypes = [
    ctypes.c_void_p,  # varIn : VARIANT*
    wintypes.BOOL,  # fDefault : BOOL
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROPSYS.dll')
VariantToBooleanWithDefault = Fiddle::Function.new(
  lib['VariantToBooleanWithDefault'],
  [
    Fiddle::TYPE_VOIDP,  # varIn : VARIANT*
    Fiddle::TYPE_INT,  # fDefault : BOOL
  ],
  Fiddle::TYPE_INT)

#[link(name = "propsys")]
extern "system" {
    fn VariantToBooleanWithDefault(
        varIn: *const VARIANT,  // VARIANT*
        fDefault: i32  // BOOL
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("PROPSYS.dll")]
public static extern bool VariantToBooleanWithDefault(IntPtr varIn, bool fDefault);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_VariantToBooleanWithDefault' -Namespace Win32 -PassThru
# $api::VariantToBooleanWithDefault(varIn, fDefault)

#uselib "PROPSYS.dll"
#func global VariantToBooleanWithDefault "VariantToBooleanWithDefault" sptr, sptr
; VariantToBooleanWithDefault varptr(varIn), fDefault   ; 戻り値は stat
; varIn : VARIANT* -> "sptr"
; fDefault : BOOL -> "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 "PROPSYS.dll"
#cfunc global VariantToBooleanWithDefault "VariantToBooleanWithDefault" var, int
; res = VariantToBooleanWithDefault(varIn, fDefault)
; varIn : VARIANT* -> "var"
; fDefault : BOOL -> "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 "PROPSYS.dll"
#cfunc global VariantToBooleanWithDefault "VariantToBooleanWithDefault" sptr, int
; res = VariantToBooleanWithDefault(varptr(varIn), fDefault)
; varIn : VARIANT* -> "sptr"
; fDefault : BOOL -> "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:

; BOOL VariantToBooleanWithDefault(VARIANT* varIn, BOOL fDefault)
#uselib "PROPSYS.dll"
#cfunc global VariantToBooleanWithDefault "VariantToBooleanWithDefault" var, int
; res = VariantToBooleanWithDefault(varIn, fDefault)
; varIn : VARIANT* -> "var"
; fDefault : BOOL -> "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。; BOOL VariantToBooleanWithDefault(VARIANT* varIn, BOOL fDefault)
#uselib "PROPSYS.dll"
#cfunc global VariantToBooleanWithDefault "VariantToBooleanWithDefault" intptr, int
; res = VariantToBooleanWithDefault(varptr(varIn), fDefault)
; varIn : VARIANT* -> "intptr"
; fDefault : BOOL -> "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 (
	propsys = windows.NewLazySystemDLL("PROPSYS.dll")
	procVariantToBooleanWithDefault = propsys.NewProc("VariantToBooleanWithDefault")
)

// varIn (VARIANT*), fDefault (BOOL)
r1, _, err := procVariantToBooleanWithDefault.Call(
	uintptr(varIn),
	uintptr(fDefault),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function VariantToBooleanWithDefault(
  varIn: Pointer;   // VARIANT*
  fDefault: BOOL   // BOOL
): BOOL; stdcall;
  external 'PROPSYS.dll' name 'VariantToBooleanWithDefault';

result := DllCall("PROPSYS\VariantToBooleanWithDefault"
    , "Ptr", varIn   ; VARIANT*
    , "Int", fDefault   ; BOOL
    , "Int")   ; return: BOOL

●VariantToBooleanWithDefault(varIn, fDefault) = DLL("PROPSYS.dll", "bool VariantToBooleanWithDefault(void*, bool)")
# 呼び出し: VariantToBooleanWithDefault(varIn, fDefault)
# varIn : VARIANT* -> "void*"
# fDefault : BOOL -> "bool"
# 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)。