GetTempFileNameA

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

DWORD GetTempFileNameA(
    LPCSTR lpPathName,
    LPCSTR lpPrefixString,
    DWORD uUnique,
    LPSTR lpTempFileName
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetTempFileNameA(
    <MarshalAs(UnmanagedType.LPStr)> lpPathName As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> lpPrefixString As String,   ' LPCSTR
    uUnique As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> lpTempFileName As System.Text.StringBuilder   ' LPSTR out
) As UInteger
End Function

' lpPathName : LPCSTR
' lpPrefixString : LPCSTR
' uUnique : DWORD
' lpTempFileName : LPSTR out
Declare PtrSafe Function GetTempFileNameA Lib "kernel32" ( _
    ByVal lpPathName As String, _
    ByVal lpPrefixString As String, _
    ByVal uUnique As Long, _
    ByVal lpTempFileName 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

GetTempFileNameA = ctypes.windll.kernel32.GetTempFileNameA
GetTempFileNameA.restype = wintypes.DWORD
GetTempFileNameA.argtypes = [
    wintypes.LPCSTR,  # lpPathName : LPCSTR
    wintypes.LPCSTR,  # lpPrefixString : LPCSTR
    wintypes.DWORD,  # uUnique : DWORD
    wintypes.LPSTR,  # lpTempFileName : LPSTR out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetTempFileNameA = Fiddle::Function.new(
  lib['GetTempFileNameA'],
  [
    Fiddle::TYPE_VOIDP,  # lpPathName : LPCSTR
    Fiddle::TYPE_VOIDP,  # lpPrefixString : LPCSTR
    -Fiddle::TYPE_INT,  # uUnique : DWORD
    Fiddle::TYPE_VOIDP,  # lpTempFileName : LPSTR out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetTempFileNameA(
        lpPathName: *const u8,  // LPCSTR
        lpPrefixString: *const u8,  // LPCSTR
        uUnique: u32,  // DWORD
        lpTempFileName: *mut u8  // LPSTR out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern uint GetTempFileNameA([MarshalAs(UnmanagedType.LPStr)] string lpPathName, [MarshalAs(UnmanagedType.LPStr)] string lpPrefixString, uint uUnique, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder lpTempFileName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetTempFileNameA' -Namespace Win32 -PassThru
# $api::GetTempFileNameA(lpPathName, lpPrefixString, uUnique, lpTempFileName)

#uselib "KERNEL32.dll"
#func global GetTempFileNameA "GetTempFileNameA" sptr, sptr, sptr, sptr
; GetTempFileNameA lpPathName, lpPrefixString, uUnique, varptr(lpTempFileName)   ; 戻り値は stat
; lpPathName : LPCSTR -> "sptr"
; lpPrefixString : LPCSTR -> "sptr"
; uUnique : DWORD -> "sptr"
; lpTempFileName : LPSTR 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 "KERNEL32.dll"
#cfunc global GetTempFileNameA "GetTempFileNameA" str, str, int, var
; res = GetTempFileNameA(lpPathName, lpPrefixString, uUnique, lpTempFileName)
; lpPathName : LPCSTR -> "str"
; lpPrefixString : LPCSTR -> "str"
; uUnique : DWORD -> "int"
; lpTempFileName : LPSTR 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。

; DWORD GetTempFileNameA(LPCSTR lpPathName, LPCSTR lpPrefixString, DWORD uUnique, LPSTR lpTempFileName)
#uselib "KERNEL32.dll"
#cfunc global GetTempFileNameA "GetTempFileNameA" str, str, int, var
; res = GetTempFileNameA(lpPathName, lpPrefixString, uUnique, lpTempFileName)
; lpPathName : LPCSTR -> "str"
; lpPrefixString : LPCSTR -> "str"
; uUnique : DWORD -> "int"
; lpTempFileName : LPSTR 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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetTempFileNameA = kernel32.NewProc("GetTempFileNameA")
)

// lpPathName (LPCSTR), lpPrefixString (LPCSTR), uUnique (DWORD), lpTempFileName (LPSTR out)
r1, _, err := procGetTempFileNameA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpPathName))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpPrefixString))),
	uintptr(uUnique),
	uintptr(lpTempFileName),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetTempFileNameA(
  lpPathName: PAnsiChar;   // LPCSTR
  lpPrefixString: PAnsiChar;   // LPCSTR
  uUnique: DWORD;   // DWORD
  lpTempFileName: PAnsiChar   // LPSTR out
): DWORD; stdcall;
  external 'KERNEL32.dll' name 'GetTempFileNameA';

result := DllCall("KERNEL32\GetTempFileNameA"
    , "AStr", lpPathName   ; LPCSTR
    , "AStr", lpPrefixString   ; LPCSTR
    , "UInt", uUnique   ; DWORD
    , "Ptr", lpTempFileName   ; LPSTR out
    , "UInt")   ; return: DWORD

●GetTempFileNameA(lpPathName, lpPrefixString, uUnique, lpTempFileName) = DLL("KERNEL32.dll", "dword GetTempFileNameA(char*, char*, dword, char*)")
# 呼び出し: GetTempFileNameA(lpPathName, lpPrefixString, uUnique, lpTempFileName)
# lpPathName : LPCSTR -> "char*"
# lpPrefixString : LPCSTR -> "char*"
# uUnique : DWORD -> "dword"
# lpTempFileName : LPSTR out -> "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)。