DispInvoke

関数

タイプ情報を使ってオブジェクトのメンバーを自動的に呼び出す。

DLLOLEAUT32.dll呼出規約winapi

シグネチャ

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

HRESULT DispInvoke(
    void* _this,
    ITypeInfo* ptinfo,
    INT dispidMember,
    WORD wFlags,
    DISPPARAMS* pparams,
    VARIANT* pvarResult,
    EXCEPINFO* pexcepinfo,
    DWORD* puArgErr
);

パラメーター

名前	型	方向
_this	void*	inout
ptinfo	ITypeInfo*	in
dispidMember	INT	in
wFlags	WORD	in
pparams	DISPPARAMS*	inout
pvarResult	VARIANT*	inout
pexcepinfo	EXCEPINFO*	inout
puArgErr	DWORD*	inout

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT DispInvoke(
    void* _this,
    ITypeInfo* ptinfo,
    INT dispidMember,
    WORD wFlags,
    DISPPARAMS* pparams,
    VARIANT* pvarResult,
    EXCEPINFO* pexcepinfo,
    DWORD* puArgErr
);

[DllImport("OLEAUT32.dll", ExactSpelling = true)]
static extern int DispInvoke(
    IntPtr _this,   // void* in/out
    IntPtr ptinfo,   // ITypeInfo*
    int dispidMember,   // INT
    ushort wFlags,   // WORD
    IntPtr pparams,   // DISPPARAMS* in/out
    IntPtr pvarResult,   // VARIANT* in/out
    IntPtr pexcepinfo,   // EXCEPINFO* in/out
    ref uint puArgErr   // DWORD* in/out
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function DispInvoke(
    _this As IntPtr,   ' void* in/out
    ptinfo As IntPtr,   ' ITypeInfo*
    dispidMember As Integer,   ' INT
    wFlags As UShort,   ' WORD
    pparams As IntPtr,   ' DISPPARAMS* in/out
    pvarResult As IntPtr,   ' VARIANT* in/out
    pexcepinfo As IntPtr,   ' EXCEPINFO* in/out
    ByRef puArgErr As UInteger   ' DWORD* in/out
) As Integer
End Function

' _this : void* in/out
' ptinfo : ITypeInfo*
' dispidMember : INT
' wFlags : WORD
' pparams : DISPPARAMS* in/out
' pvarResult : VARIANT* in/out
' pexcepinfo : EXCEPINFO* in/out
' puArgErr : DWORD* in/out
Declare PtrSafe Function DispInvoke Lib "oleaut32" ( _
    ByVal _this As LongPtr, _
    ByVal ptinfo As LongPtr, _
    ByVal dispidMember As Long, _
    ByVal wFlags As Integer, _
    ByVal pparams As LongPtr, _
    ByVal pvarResult As LongPtr, _
    ByVal pexcepinfo As LongPtr, _
    ByRef puArgErr 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

DispInvoke = ctypes.windll.oleaut32.DispInvoke
DispInvoke.restype = ctypes.c_int
DispInvoke.argtypes = [
    ctypes.POINTER(None),  # _this : void* in/out
    ctypes.c_void_p,  # ptinfo : ITypeInfo*
    ctypes.c_int,  # dispidMember : INT
    ctypes.c_ushort,  # wFlags : WORD
    ctypes.c_void_p,  # pparams : DISPPARAMS* in/out
    ctypes.c_void_p,  # pvarResult : VARIANT* in/out
    ctypes.c_void_p,  # pexcepinfo : EXCEPINFO* in/out
    ctypes.POINTER(wintypes.DWORD),  # puArgErr : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
DispInvoke = Fiddle::Function.new(
  lib['DispInvoke'],
  [
    Fiddle::TYPE_VOIDP,  # _this : void* in/out
    Fiddle::TYPE_VOIDP,  # ptinfo : ITypeInfo*
    Fiddle::TYPE_INT,  # dispidMember : INT
    -Fiddle::TYPE_SHORT,  # wFlags : WORD
    Fiddle::TYPE_VOIDP,  # pparams : DISPPARAMS* in/out
    Fiddle::TYPE_VOIDP,  # pvarResult : VARIANT* in/out
    Fiddle::TYPE_VOIDP,  # pexcepinfo : EXCEPINFO* in/out
    Fiddle::TYPE_VOIDP,  # puArgErr : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn DispInvoke(
        _this: *mut (),  // void* in/out
        ptinfo: *mut core::ffi::c_void,  // ITypeInfo*
        dispidMember: i32,  // INT
        wFlags: u16,  // WORD
        pparams: *mut DISPPARAMS,  // DISPPARAMS* in/out
        pvarResult: *mut VARIANT,  // VARIANT* in/out
        pexcepinfo: *mut EXCEPINFO,  // EXCEPINFO* in/out
        puArgErr: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int DispInvoke(IntPtr _this, IntPtr ptinfo, int dispidMember, ushort wFlags, IntPtr pparams, IntPtr pvarResult, IntPtr pexcepinfo, ref uint puArgErr);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_DispInvoke' -Namespace Win32 -PassThru
# $api::DispInvoke(_this, ptinfo, dispidMember, wFlags, pparams, pvarResult, pexcepinfo, puArgErr)

#uselib "OLEAUT32.dll"
#func global DispInvoke "DispInvoke" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; DispInvoke _this, ptinfo, dispidMember, wFlags, varptr(pparams), varptr(pvarResult), varptr(pexcepinfo), varptr(puArgErr)   ; 戻り値は stat
; _this : void* in/out -> "sptr"
; ptinfo : ITypeInfo* -> "sptr"
; dispidMember : INT -> "sptr"
; wFlags : WORD -> "sptr"
; pparams : DISPPARAMS* in/out -> "sptr"
; pvarResult : VARIANT* in/out -> "sptr"
; pexcepinfo : EXCEPINFO* in/out -> "sptr"
; puArgErr : DWORD* in/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 DispInvoke "DispInvoke" sptr, sptr, int, int, var, var, var, var
; res = DispInvoke(_this, ptinfo, dispidMember, wFlags, pparams, pvarResult, pexcepinfo, puArgErr)
; _this : void* in/out -> "sptr"
; ptinfo : ITypeInfo* -> "sptr"
; dispidMember : INT -> "int"
; wFlags : WORD -> "int"
; pparams : DISPPARAMS* in/out -> "var"
; pvarResult : VARIANT* in/out -> "var"
; pexcepinfo : EXCEPINFO* in/out -> "var"
; puArgErr : DWORD* in/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 DispInvoke "DispInvoke" sptr, sptr, int, int, sptr, sptr, sptr, sptr
; res = DispInvoke(_this, ptinfo, dispidMember, wFlags, varptr(pparams), varptr(pvarResult), varptr(pexcepinfo), varptr(puArgErr))
; _this : void* in/out -> "sptr"
; ptinfo : ITypeInfo* -> "sptr"
; dispidMember : INT -> "int"
; wFlags : WORD -> "int"
; pparams : DISPPARAMS* in/out -> "sptr"
; pvarResult : VARIANT* in/out -> "sptr"
; pexcepinfo : EXCEPINFO* in/out -> "sptr"
; puArgErr : DWORD* in/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 DispInvoke(void* _this, ITypeInfo* ptinfo, INT dispidMember, WORD wFlags, DISPPARAMS* pparams, VARIANT* pvarResult, EXCEPINFO* pexcepinfo, DWORD* puArgErr)
#uselib "OLEAUT32.dll"
#cfunc global DispInvoke "DispInvoke" intptr, intptr, int, int, var, var, var, var
; res = DispInvoke(_this, ptinfo, dispidMember, wFlags, pparams, pvarResult, pexcepinfo, puArgErr)
; _this : void* in/out -> "intptr"
; ptinfo : ITypeInfo* -> "intptr"
; dispidMember : INT -> "int"
; wFlags : WORD -> "int"
; pparams : DISPPARAMS* in/out -> "var"
; pvarResult : VARIANT* in/out -> "var"
; pexcepinfo : EXCEPINFO* in/out -> "var"
; puArgErr : DWORD* in/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 DispInvoke(void* _this, ITypeInfo* ptinfo, INT dispidMember, WORD wFlags, DISPPARAMS* pparams, VARIANT* pvarResult, EXCEPINFO* pexcepinfo, DWORD* puArgErr)
#uselib "OLEAUT32.dll"
#cfunc global DispInvoke "DispInvoke" intptr, intptr, int, int, intptr, intptr, intptr, intptr
; res = DispInvoke(_this, ptinfo, dispidMember, wFlags, varptr(pparams), varptr(pvarResult), varptr(pexcepinfo), varptr(puArgErr))
; _this : void* in/out -> "intptr"
; ptinfo : ITypeInfo* -> "intptr"
; dispidMember : INT -> "int"
; wFlags : WORD -> "int"
; pparams : DISPPARAMS* in/out -> "intptr"
; pvarResult : VARIANT* in/out -> "intptr"
; pexcepinfo : EXCEPINFO* in/out -> "intptr"
; puArgErr : DWORD* in/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")
	procDispInvoke = oleaut32.NewProc("DispInvoke")
)

// _this (void* in/out), ptinfo (ITypeInfo*), dispidMember (INT), wFlags (WORD), pparams (DISPPARAMS* in/out), pvarResult (VARIANT* in/out), pexcepinfo (EXCEPINFO* in/out), puArgErr (DWORD* in/out)
r1, _, err := procDispInvoke.Call(
	uintptr(_this),
	uintptr(ptinfo),
	uintptr(dispidMember),
	uintptr(wFlags),
	uintptr(pparams),
	uintptr(pvarResult),
	uintptr(pexcepinfo),
	uintptr(puArgErr),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DispInvoke(
  _this: Pointer;   // void* in/out
  ptinfo: Pointer;   // ITypeInfo*
  dispidMember: Integer;   // INT
  wFlags: Word;   // WORD
  pparams: Pointer;   // DISPPARAMS* in/out
  pvarResult: Pointer;   // VARIANT* in/out
  pexcepinfo: Pointer;   // EXCEPINFO* in/out
  puArgErr: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'DispInvoke';

result := DllCall("OLEAUT32\DispInvoke"
    , "Ptr", _this   ; void* in/out
    , "Ptr", ptinfo   ; ITypeInfo*
    , "Int", dispidMember   ; INT
    , "UShort", wFlags   ; WORD
    , "Ptr", pparams   ; DISPPARAMS* in/out
    , "Ptr", pvarResult   ; VARIANT* in/out
    , "Ptr", pexcepinfo   ; EXCEPINFO* in/out
    , "Ptr", puArgErr   ; DWORD* in/out
    , "Int")   ; return: HRESULT

●DispInvoke(_this, ptinfo, dispidMember, wFlags, pparams, pvarResult, pexcepinfo, puArgErr) = DLL("OLEAUT32.dll", "int DispInvoke(void*, void*, int, int, void*, void*, void*, void*)")
# 呼び出し: DispInvoke(_this, ptinfo, dispidMember, wFlags, pparams, pvarResult, pexcepinfo, puArgErr)
# _this : void* in/out -> "void*"
# ptinfo : ITypeInfo* -> "void*"
# dispidMember : INT -> "int"
# wFlags : WORD -> "int"
# pparams : DISPPARAMS* in/out -> "void*"
# pvarResult : VARIANT* in/out -> "void*"
# pexcepinfo : EXCEPINFO* in/out -> "void*"
# puArgErr : DWORD* in/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)。