utrace_vformat

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

INT utrace_vformat(
    LPSTR outBuf,
    INT capacity,
    INT indent,
    LPCSTR fmt,
    CHAR* args
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function utrace_vformat(
    <MarshalAs(UnmanagedType.LPStr)> outBuf As String,   ' LPSTR
    capacity As Integer,   ' INT
    indent As Integer,   ' INT
    <MarshalAs(UnmanagedType.LPStr)> fmt As String,   ' LPCSTR
    args As IntPtr   ' CHAR* in/out
) As Integer
End Function

' outBuf : LPSTR
' capacity : INT
' indent : INT
' fmt : LPCSTR
' args : CHAR* in/out
Declare PtrSafe Function utrace_vformat Lib "icuuc" ( _
    ByVal outBuf As String, _
    ByVal capacity As Long, _
    ByVal indent As Long, _
    ByVal fmt As String, _
    ByVal args As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

utrace_vformat = ctypes.cdll.icuuc.utrace_vformat
utrace_vformat.restype = ctypes.c_int
utrace_vformat.argtypes = [
    wintypes.LPCSTR,  # outBuf : LPSTR
    ctypes.c_int,  # capacity : INT
    ctypes.c_int,  # indent : INT
    wintypes.LPCSTR,  # fmt : LPCSTR
    ctypes.POINTER(ctypes.c_byte),  # args : CHAR* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
utrace_vformat = Fiddle::Function.new(
  lib['utrace_vformat'],
  [
    Fiddle::TYPE_VOIDP,  # outBuf : LPSTR
    Fiddle::TYPE_INT,  # capacity : INT
    Fiddle::TYPE_INT,  # indent : INT
    Fiddle::TYPE_VOIDP,  # fmt : LPCSTR
    Fiddle::TYPE_VOIDP,  # args : CHAR* in/out
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn utrace_vformat(
        outBuf: *mut u8,  // LPSTR
        capacity: i32,  // INT
        indent: i32,  // INT
        fmt: *const u8,  // LPCSTR
        args: *mut i8  // CHAR* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int utrace_vformat([MarshalAs(UnmanagedType.LPStr)] string outBuf, int capacity, int indent, [MarshalAs(UnmanagedType.LPStr)] string fmt, IntPtr args);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_utrace_vformat' -Namespace Win32 -PassThru
# $api::utrace_vformat(outBuf, capacity, indent, fmt, args)

#uselib "icuuc.dll"
#func global utrace_vformat "utrace_vformat" sptr, sptr, sptr, sptr, sptr
; utrace_vformat outBuf, capacity, indent, fmt, varptr(args)   ; 戻り値は stat
; outBuf : LPSTR -> "sptr"
; capacity : INT -> "sptr"
; indent : INT -> "sptr"
; fmt : LPCSTR -> "sptr"
; args : CHAR* 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。

#uselib "icuuc.dll"
#cfunc global utrace_vformat "utrace_vformat" str, int, int, str, var
; res = utrace_vformat(outBuf, capacity, indent, fmt, args)
; outBuf : LPSTR -> "str"
; capacity : INT -> "int"
; indent : INT -> "int"
; fmt : LPCSTR -> "str"
; args : CHAR* 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。

; INT utrace_vformat(LPSTR outBuf, INT capacity, INT indent, LPCSTR fmt, CHAR* args)
#uselib "icuuc.dll"
#cfunc global utrace_vformat "utrace_vformat" str, int, int, str, var
; res = utrace_vformat(outBuf, capacity, indent, fmt, args)
; outBuf : LPSTR -> "str"
; capacity : INT -> "int"
; indent : INT -> "int"
; fmt : LPCSTR -> "str"
; args : CHAR* 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。

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

var (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procutrace_vformat = icuuc.NewProc("utrace_vformat")
)

// outBuf (LPSTR), capacity (INT), indent (INT), fmt (LPCSTR), args (CHAR* in/out)
r1, _, err := procutrace_vformat.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(outBuf))),
	uintptr(capacity),
	uintptr(indent),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(fmt))),
	uintptr(args),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function utrace_vformat(
  outBuf: PAnsiChar;   // LPSTR
  capacity: Integer;   // INT
  indent: Integer;   // INT
  fmt: PAnsiChar;   // LPCSTR
  args: Pointer   // CHAR* in/out
): Integer; cdecl;
  external 'icuuc.dll' name 'utrace_vformat';

result := DllCall("icuuc\utrace_vformat"
    , "AStr", outBuf   ; LPSTR
    , "Int", capacity   ; INT
    , "Int", indent   ; INT
    , "AStr", fmt   ; LPCSTR
    , "Ptr", args   ; CHAR* in/out
    , "Cdecl Int")   ; return: INT

●utrace_vformat(outBuf, capacity, indent, fmt, args) = DLL("icuuc.dll", "int utrace_vformat(char*, int, int, char*, void*)")
# 呼び出し: utrace_vformat(outBuf, capacity, indent, fmt, args)
# outBuf : LPSTR -> "char*"
# capacity : INT -> "int"
# indent : INT -> "int"
# fmt : LPCSTR -> "char*"
# args : CHAR* 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)。
# ※cdecl関数。DLL()宣言はstdcall前提。cdeclは EXEC_PTR(`cdecl`,…) を使用。