WriteProfileStringA

// KERNEL32.dll  (ANSI / -A)
#include <windows.h>

BOOL WriteProfileStringA(
    LPCSTR lpAppName,   // optional
    LPCSTR lpKeyName,   // optional
    LPCSTR lpString   // optional
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WriteProfileStringA(
    <MarshalAs(UnmanagedType.LPStr)> lpAppName As String,   ' LPCSTR optional
    <MarshalAs(UnmanagedType.LPStr)> lpKeyName As String,   ' LPCSTR optional
    <MarshalAs(UnmanagedType.LPStr)> lpString As String   ' LPCSTR optional
) As Boolean
End Function

' lpAppName : LPCSTR optional
' lpKeyName : LPCSTR optional
' lpString : LPCSTR optional
Declare PtrSafe Function WriteProfileStringA Lib "kernel32" ( _
    ByVal lpAppName As String, _
    ByVal lpKeyName As String, _
    ByVal lpString 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

WriteProfileStringA = ctypes.windll.kernel32.WriteProfileStringA
WriteProfileStringA.restype = wintypes.BOOL
WriteProfileStringA.argtypes = [
    wintypes.LPCSTR,  # lpAppName : LPCSTR optional
    wintypes.LPCSTR,  # lpKeyName : LPCSTR optional
    wintypes.LPCSTR,  # lpString : LPCSTR optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
WriteProfileStringA = Fiddle::Function.new(
  lib['WriteProfileStringA'],
  [
    Fiddle::TYPE_VOIDP,  # lpAppName : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # lpKeyName : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # lpString : LPCSTR optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn WriteProfileStringA(
        lpAppName: *const u8,  // LPCSTR optional
        lpKeyName: *const u8,  // LPCSTR optional
        lpString: *const u8  // LPCSTR optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool WriteProfileStringA([MarshalAs(UnmanagedType.LPStr)] string lpAppName, [MarshalAs(UnmanagedType.LPStr)] string lpKeyName, [MarshalAs(UnmanagedType.LPStr)] string lpString);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_WriteProfileStringA' -Namespace Win32 -PassThru
# $api::WriteProfileStringA(lpAppName, lpKeyName, lpString)

#uselib "KERNEL32.dll"
#func global WriteProfileStringA "WriteProfileStringA" sptr, sptr, sptr
; WriteProfileStringA lpAppName, lpKeyName, lpString   ; 戻り値は stat
; lpAppName : LPCSTR optional -> "sptr"
; lpKeyName : LPCSTR optional -> "sptr"
; lpString : LPCSTR optional -> "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 "KERNEL32.dll"
#cfunc global WriteProfileStringA "WriteProfileStringA" str, str, str
; res = WriteProfileStringA(lpAppName, lpKeyName, lpString)
; lpAppName : LPCSTR optional -> "str"
; lpKeyName : LPCSTR optional -> "str"
; lpString : LPCSTR optional -> "str"

; BOOL WriteProfileStringA(LPCSTR lpAppName, LPCSTR lpKeyName, LPCSTR lpString)
#uselib "KERNEL32.dll"
#cfunc global WriteProfileStringA "WriteProfileStringA" str, str, str
; res = WriteProfileStringA(lpAppName, lpKeyName, lpString)
; lpAppName : LPCSTR optional -> "str"
; lpKeyName : LPCSTR optional -> "str"
; lpString : LPCSTR optional -> "str"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procWriteProfileStringA = kernel32.NewProc("WriteProfileStringA")
)

// lpAppName (LPCSTR optional), lpKeyName (LPCSTR optional), lpString (LPCSTR optional)
r1, _, err := procWriteProfileStringA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpAppName))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpKeyName))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpString))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function WriteProfileStringA(
  lpAppName: PAnsiChar;   // LPCSTR optional
  lpKeyName: PAnsiChar;   // LPCSTR optional
  lpString: PAnsiChar   // LPCSTR optional
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'WriteProfileStringA';

result := DllCall("KERNEL32\WriteProfileStringA"
    , "AStr", lpAppName   ; LPCSTR optional
    , "AStr", lpKeyName   ; LPCSTR optional
    , "AStr", lpString   ; LPCSTR optional
    , "Int")   ; return: BOOL

●WriteProfileStringA(lpAppName, lpKeyName, lpString) = DLL("KERNEL32.dll", "bool WriteProfileStringA(char*, char*, char*)")
# 呼び出し: WriteProfileStringA(lpAppName, lpKeyName, lpString)
# lpAppName : LPCSTR optional -> "char*"
# lpKeyName : LPCSTR optional -> "char*"
# lpString : LPCSTR optional -> "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)。