DdeCreateStringHandleA

// USER32.dll  (ANSI / -A)
#include <windows.h>

HSZ DdeCreateStringHandleA(
    DWORD idInst,
    LPCSTR psz,
    INT iCodePage
);

<DllImport("USER32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function DdeCreateStringHandleA(
    idInst As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> psz As String,   ' LPCSTR
    iCodePage As Integer   ' INT
) As IntPtr
End Function

' idInst : DWORD
' psz : LPCSTR
' iCodePage : INT
Declare PtrSafe Function DdeCreateStringHandleA Lib "user32" ( _
    ByVal idInst As Long, _
    ByVal psz As String, _
    ByVal iCodePage As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DdeCreateStringHandleA = ctypes.windll.user32.DdeCreateStringHandleA
DdeCreateStringHandleA.restype = ctypes.c_void_p
DdeCreateStringHandleA.argtypes = [
    wintypes.DWORD,  # idInst : DWORD
    wintypes.LPCSTR,  # psz : LPCSTR
    ctypes.c_int,  # iCodePage : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
DdeCreateStringHandleA = Fiddle::Function.new(
  lib['DdeCreateStringHandleA'],
  [
    -Fiddle::TYPE_INT,  # idInst : DWORD
    Fiddle::TYPE_VOIDP,  # psz : LPCSTR
    Fiddle::TYPE_INT,  # iCodePage : INT
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "user32")]
extern "system" {
    fn DdeCreateStringHandleA(
        idInst: u32,  // DWORD
        psz: *const u8,  // LPCSTR
        iCodePage: i32  // INT
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll", CharSet = CharSet.Ansi)]
public static extern IntPtr DdeCreateStringHandleA(uint idInst, [MarshalAs(UnmanagedType.LPStr)] string psz, int iCodePage);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_DdeCreateStringHandleA' -Namespace Win32 -PassThru
# $api::DdeCreateStringHandleA(idInst, psz, iCodePage)

#uselib "USER32.dll"
#func global DdeCreateStringHandleA "DdeCreateStringHandleA" sptr, sptr, sptr
; DdeCreateStringHandleA idInst, psz, iCodePage   ; 戻り値は stat
; idInst : DWORD -> "sptr"
; psz : LPCSTR -> "sptr"
; iCodePage : INT -> "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 DdeCreateStringHandleA "DdeCreateStringHandleA" int, str, int
; res = DdeCreateStringHandleA(idInst, psz, iCodePage)
; idInst : DWORD -> "int"
; psz : LPCSTR -> "str"
; iCodePage : INT -> "int"

; HSZ DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT iCodePage)
#uselib "USER32.dll"
#cfunc global DdeCreateStringHandleA "DdeCreateStringHandleA" int, str, int
; res = DdeCreateStringHandleA(idInst, psz, iCodePage)
; idInst : DWORD -> "int"
; psz : LPCSTR -> "str"
; iCodePage : INT -> "int"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procDdeCreateStringHandleA = user32.NewProc("DdeCreateStringHandleA")
)

// idInst (DWORD), psz (LPCSTR), iCodePage (INT)
r1, _, err := procDdeCreateStringHandleA.Call(
	uintptr(idInst),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(psz))),
	uintptr(iCodePage),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HSZ

function DdeCreateStringHandleA(
  idInst: DWORD;   // DWORD
  psz: PAnsiChar;   // LPCSTR
  iCodePage: Integer   // INT
): THandle; stdcall;
  external 'USER32.dll' name 'DdeCreateStringHandleA';

result := DllCall("USER32\DdeCreateStringHandleA"
    , "UInt", idInst   ; DWORD
    , "AStr", psz   ; LPCSTR
    , "Int", iCodePage   ; INT
    , "Ptr")   ; return: HSZ

●DdeCreateStringHandleA(idInst, psz, iCodePage) = DLL("USER32.dll", "void* DdeCreateStringHandleA(dword, char*, int)")
# 呼び出し: DdeCreateStringHandleA(idInst, psz, iCodePage)
# idInst : DWORD -> "dword"
# psz : LPCSTR -> "char*"
# iCodePage : INT -> "int"
# 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)。