FtpCreateDirectoryA

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

BOOL FtpCreateDirectoryA(
    void* hConnect,
    LPCSTR lpszDirectory
);

<DllImport("WININET.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function FtpCreateDirectoryA(
    hConnect As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPStr)> lpszDirectory As String   ' LPCSTR
) As Boolean
End Function

' hConnect : void*
' lpszDirectory : LPCSTR
Declare PtrSafe Function FtpCreateDirectoryA Lib "wininet" ( _
    ByVal hConnect As LongPtr, _
    ByVal lpszDirectory 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

FtpCreateDirectoryA = ctypes.windll.wininet.FtpCreateDirectoryA
FtpCreateDirectoryA.restype = wintypes.BOOL
FtpCreateDirectoryA.argtypes = [
    ctypes.POINTER(None),  # hConnect : void*
    wintypes.LPCSTR,  # lpszDirectory : LPCSTR
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WININET.dll')
FtpCreateDirectoryA = Fiddle::Function.new(
  lib['FtpCreateDirectoryA'],
  [
    Fiddle::TYPE_VOIDP,  # hConnect : void*
    Fiddle::TYPE_VOIDP,  # lpszDirectory : LPCSTR
  ],
  Fiddle::TYPE_INT)

#[link(name = "wininet")]
extern "system" {
    fn FtpCreateDirectoryA(
        hConnect: *mut (),  // void*
        lpszDirectory: *const u8  // LPCSTR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WININET.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool FtpCreateDirectoryA(IntPtr hConnect, [MarshalAs(UnmanagedType.LPStr)] string lpszDirectory);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WININET_FtpCreateDirectoryA' -Namespace Win32 -PassThru
# $api::FtpCreateDirectoryA(hConnect, lpszDirectory)

#uselib "WININET.dll"
#func global FtpCreateDirectoryA "FtpCreateDirectoryA" sptr, sptr
; FtpCreateDirectoryA hConnect, lpszDirectory   ; 戻り値は stat
; hConnect : void* -> "sptr"
; lpszDirectory : LPCSTR -> "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 "WININET.dll"
#cfunc global FtpCreateDirectoryA "FtpCreateDirectoryA" sptr, str
; res = FtpCreateDirectoryA(hConnect, lpszDirectory)
; hConnect : void* -> "sptr"
; lpszDirectory : LPCSTR -> "str"

; BOOL FtpCreateDirectoryA(void* hConnect, LPCSTR lpszDirectory)
#uselib "WININET.dll"
#cfunc global FtpCreateDirectoryA "FtpCreateDirectoryA" intptr, str
; res = FtpCreateDirectoryA(hConnect, lpszDirectory)
; hConnect : void* -> "intptr"
; lpszDirectory : LPCSTR -> "str"

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

var (
	wininet = windows.NewLazySystemDLL("WININET.dll")
	procFtpCreateDirectoryA = wininet.NewProc("FtpCreateDirectoryA")
)

// hConnect (void*), lpszDirectory (LPCSTR)
r1, _, err := procFtpCreateDirectoryA.Call(
	uintptr(hConnect),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpszDirectory))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function FtpCreateDirectoryA(
  hConnect: Pointer;   // void*
  lpszDirectory: PAnsiChar   // LPCSTR
): BOOL; stdcall;
  external 'WININET.dll' name 'FtpCreateDirectoryA';

result := DllCall("WININET\FtpCreateDirectoryA"
    , "Ptr", hConnect   ; void*
    , "AStr", lpszDirectory   ; LPCSTR
    , "Int")   ; return: BOOL

●FtpCreateDirectoryA(hConnect, lpszDirectory) = DLL("WININET.dll", "bool FtpCreateDirectoryA(void*, char*)")
# 呼び出し: FtpCreateDirectoryA(hConnect, lpszDirectory)
# hConnect : void* -> "void*"
# lpszDirectory : LPCSTR -> "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)。