VarI1FromDec

関数

DECIMAL型の値を符号付き1バイト整数に変換する。

DLLOLEAUT32.dll呼出規約winapi

シグネチャ

// OLEAUT32.dll
#include <windows.h>

HRESULT VarI1FromDec(
    const DECIMAL* pdecIn,
    LPSTR pcOut
);

パラメーター

名前	型	方向
pdecIn	DECIMAL*	in
pcOut	LPSTR	out

戻り値の型: HRESULT

各言語での呼び出し定義

// OLEAUT32.dll
#include <windows.h>

HRESULT VarI1FromDec(
    const DECIMAL* pdecIn,
    LPSTR pcOut
);

[DllImport("OLEAUT32.dll", ExactSpelling = true)]
static extern int VarI1FromDec(
    IntPtr pdecIn,   // DECIMAL*
    [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pcOut   // LPSTR out
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function VarI1FromDec(
    pdecIn As IntPtr,   ' DECIMAL*
    <MarshalAs(UnmanagedType.LPStr)> pcOut As System.Text.StringBuilder   ' LPSTR out
) As Integer
End Function

' pdecIn : DECIMAL*
' pcOut : LPSTR out
Declare PtrSafe Function VarI1FromDec Lib "oleaut32" ( _
    ByVal pdecIn As LongPtr, _
    ByVal pcOut As String) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

VarI1FromDec = ctypes.windll.oleaut32.VarI1FromDec
VarI1FromDec.restype = ctypes.c_int
VarI1FromDec.argtypes = [
    ctypes.c_void_p,  # pdecIn : DECIMAL*
    wintypes.LPSTR,  # pcOut : LPSTR out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
VarI1FromDec = Fiddle::Function.new(
  lib['VarI1FromDec'],
  [
    Fiddle::TYPE_VOIDP,  # pdecIn : DECIMAL*
    Fiddle::TYPE_VOIDP,  # pcOut : LPSTR out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn VarI1FromDec(
        pdecIn: *const DECIMAL,  // DECIMAL*
        pcOut: *mut u8  // LPSTR out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int VarI1FromDec(IntPtr pdecIn, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pcOut);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_VarI1FromDec' -Namespace Win32 -PassThru
# $api::VarI1FromDec(pdecIn, pcOut)

#uselib "OLEAUT32.dll"
#func global VarI1FromDec "VarI1FromDec" sptr, sptr
; VarI1FromDec varptr(pdecIn), varptr(pcOut)   ; 戻り値は stat
; pdecIn : DECIMAL* -> "sptr"
; pcOut : LPSTR 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 "OLEAUT32.dll"
#cfunc global VarI1FromDec "VarI1FromDec" var, var
; res = VarI1FromDec(pdecIn, pcOut)
; pdecIn : DECIMAL* -> "var"
; pcOut : LPSTR 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 "OLEAUT32.dll"
#cfunc global VarI1FromDec "VarI1FromDec" sptr, sptr
; res = VarI1FromDec(varptr(pdecIn), varptr(pcOut))
; pdecIn : DECIMAL* -> "sptr"
; pcOut : LPSTR 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:

; HRESULT VarI1FromDec(DECIMAL* pdecIn, LPSTR pcOut)
#uselib "OLEAUT32.dll"
#cfunc global VarI1FromDec "VarI1FromDec" var, var
; res = VarI1FromDec(pdecIn, pcOut)
; pdecIn : DECIMAL* -> "var"
; pcOut : LPSTR 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。; HRESULT VarI1FromDec(DECIMAL* pdecIn, LPSTR pcOut)
#uselib "OLEAUT32.dll"
#cfunc global VarI1FromDec "VarI1FromDec" intptr, intptr
; res = VarI1FromDec(varptr(pdecIn), varptr(pcOut))
; pdecIn : DECIMAL* -> "intptr"
; pcOut : LPSTR 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 (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procVarI1FromDec = oleaut32.NewProc("VarI1FromDec")
)

// pdecIn (DECIMAL*), pcOut (LPSTR out)
r1, _, err := procVarI1FromDec.Call(
	uintptr(pdecIn),
	uintptr(pcOut),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VarI1FromDec(
  pdecIn: Pointer;   // DECIMAL*
  pcOut: PAnsiChar   // LPSTR out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'VarI1FromDec';

result := DllCall("OLEAUT32\VarI1FromDec"
    , "Ptr", pdecIn   ; DECIMAL*
    , "Ptr", pcOut   ; LPSTR out
    , "Int")   ; return: HRESULT

●VarI1FromDec(pdecIn, pcOut) = DLL("OLEAUT32.dll", "int VarI1FromDec(void*, char*)")
# 呼び出し: VarI1FromDec(pdecIn, pcOut)
# pdecIn : DECIMAL* -> "void*"
# pcOut : LPSTR out -> "char*"
# 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)。