DdeAbandonTransaction

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

BOOL DdeAbandonTransaction(
    DWORD idInst,
    HCONV hConv,
    DWORD idTransaction
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function DdeAbandonTransaction(
    idInst As UInteger,   ' DWORD
    hConv As IntPtr,   ' HCONV
    idTransaction As UInteger   ' DWORD
) As Boolean
End Function

' idInst : DWORD
' hConv : HCONV
' idTransaction : DWORD
Declare PtrSafe Function DdeAbandonTransaction Lib "user32" ( _
    ByVal idInst As Long, _
    ByVal hConv As LongPtr, _
    ByVal idTransaction 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

DdeAbandonTransaction = ctypes.windll.user32.DdeAbandonTransaction
DdeAbandonTransaction.restype = wintypes.BOOL
DdeAbandonTransaction.argtypes = [
    wintypes.DWORD,  # idInst : DWORD
    wintypes.HANDLE,  # hConv : HCONV
    wintypes.DWORD,  # idTransaction : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
DdeAbandonTransaction = Fiddle::Function.new(
  lib['DdeAbandonTransaction'],
  [
    -Fiddle::TYPE_INT,  # idInst : DWORD
    Fiddle::TYPE_VOIDP,  # hConv : HCONV
    -Fiddle::TYPE_INT,  # idTransaction : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn DdeAbandonTransaction(
        idInst: u32,  // DWORD
        hConv: *mut core::ffi::c_void,  // HCONV
        idTransaction: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll")]
public static extern bool DdeAbandonTransaction(uint idInst, IntPtr hConv, uint idTransaction);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_DdeAbandonTransaction' -Namespace Win32 -PassThru
# $api::DdeAbandonTransaction(idInst, hConv, idTransaction)

#uselib "USER32.dll"
#func global DdeAbandonTransaction "DdeAbandonTransaction" sptr, sptr, sptr
; DdeAbandonTransaction idInst, hConv, idTransaction   ; 戻り値は stat
; idInst : DWORD -> "sptr"
; hConv : HCONV -> "sptr"
; idTransaction : DWORD -> "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 DdeAbandonTransaction "DdeAbandonTransaction" int, sptr, int
; res = DdeAbandonTransaction(idInst, hConv, idTransaction)
; idInst : DWORD -> "int"
; hConv : HCONV -> "sptr"
; idTransaction : DWORD -> "int"

; BOOL DdeAbandonTransaction(DWORD idInst, HCONV hConv, DWORD idTransaction)
#uselib "USER32.dll"
#cfunc global DdeAbandonTransaction "DdeAbandonTransaction" int, intptr, int
; res = DdeAbandonTransaction(idInst, hConv, idTransaction)
; idInst : DWORD -> "int"
; hConv : HCONV -> "intptr"
; idTransaction : DWORD -> "int"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procDdeAbandonTransaction = user32.NewProc("DdeAbandonTransaction")
)

// idInst (DWORD), hConv (HCONV), idTransaction (DWORD)
r1, _, err := procDdeAbandonTransaction.Call(
	uintptr(idInst),
	uintptr(hConv),
	uintptr(idTransaction),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function DdeAbandonTransaction(
  idInst: DWORD;   // DWORD
  hConv: THandle;   // HCONV
  idTransaction: DWORD   // DWORD
): BOOL; stdcall;
  external 'USER32.dll' name 'DdeAbandonTransaction';

result := DllCall("USER32\DdeAbandonTransaction"
    , "UInt", idInst   ; DWORD
    , "Ptr", hConv   ; HCONV
    , "UInt", idTransaction   ; DWORD
    , "Int")   ; return: BOOL

●DdeAbandonTransaction(idInst, hConv, idTransaction) = DLL("USER32.dll", "bool DdeAbandonTransaction(dword, void*, dword)")
# 呼び出し: DdeAbandonTransaction(idInst, hConv, idTransaction)
# idInst : DWORD -> "dword"
# hConv : HCONV -> "void*"
# idTransaction : DWORD -> "dword"
# 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)。