VariantToBoolean

関数

VARIANTをブール値へ変換して取得する。

DLLPROPSYS.dll呼出規約winapi対応OSWindows XP 以降

シグネチャ

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

HRESULT VariantToBoolean(
    const VARIANT* varIn,
    BOOL* pfRet
);

パラメーター

名前	型	方向
varIn	VARIANT*	in
pfRet	BOOL*	out

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT VariantToBoolean(
    const VARIANT* varIn,
    BOOL* pfRet
);

[DllImport("PROPSYS.dll", ExactSpelling = true)]
static extern int VariantToBoolean(
    IntPtr varIn,   // VARIANT*
    out int pfRet   // BOOL* out
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function VariantToBoolean(
    varIn As IntPtr,   ' VARIANT*
    <Out> ByRef pfRet As Integer   ' BOOL* out
) As Integer
End Function

' varIn : VARIANT*
' pfRet : BOOL* out
Declare PtrSafe Function VariantToBoolean Lib "propsys" ( _
    ByVal varIn As LongPtr, _
    ByRef pfRet 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

VariantToBoolean = ctypes.windll.propsys.VariantToBoolean
VariantToBoolean.restype = ctypes.c_int
VariantToBoolean.argtypes = [
    ctypes.c_void_p,  # varIn : VARIANT*
    ctypes.c_void_p,  # pfRet : BOOL* out
]

require 'fiddle'
require 'fiddle/import'

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

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

$sig = @"
[DllImport("PROPSYS.dll")]
public static extern int VariantToBoolean(IntPtr varIn, out int pfRet);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_VariantToBoolean' -Namespace Win32 -PassThru
# $api::VariantToBoolean(varIn, pfRet)

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

; HRESULT VariantToBoolean(VARIANT* varIn, BOOL* pfRet)
#uselib "PROPSYS.dll"
#cfunc global VariantToBoolean "VariantToBoolean" var, int
; res = VariantToBoolean(varIn, pfRet)
; varIn : VARIANT* -> "var"
; pfRet : BOOL* out -> "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。; HRESULT VariantToBoolean(VARIANT* varIn, BOOL* pfRet)
#uselib "PROPSYS.dll"
#cfunc global VariantToBoolean "VariantToBoolean" intptr, int
; res = VariantToBoolean(varptr(varIn), pfRet)
; varIn : VARIANT* -> "intptr"
; pfRet : BOOL* out -> "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")
	procVariantToBoolean = propsys.NewProc("VariantToBoolean")
)

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

function VariantToBoolean(
  varIn: Pointer;   // VARIANT*
  pfRet: Pointer   // BOOL* out
): Integer; stdcall;
  external 'PROPSYS.dll' name 'VariantToBoolean';

result := DllCall("PROPSYS\VariantToBoolean"
    , "Ptr", varIn   ; VARIANT*
    , "Ptr", pfRet   ; BOOL* out
    , "Int")   ; return: HRESULT

●VariantToBoolean(varIn, pfRet) = DLL("PROPSYS.dll", "int VariantToBoolean(void*, void*)")
# 呼び出し: VariantToBoolean(varIn, pfRet)
# varIn : VARIANT* -> "void*"
# pfRet : BOOL* 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)。