WindowsSubstring

// api-ms-win-core-winrt-string-l1-1-0.dll
#include <windows.h>

HRESULT WindowsSubstring(
    HSTRING string,   // optional
    DWORD startIndex,
    HSTRING* newString
);

<DllImport("api-ms-win-core-winrt-string-l1-1-0.dll", ExactSpelling:=True)>
Public Shared Function WindowsSubstring(
    [string] As IntPtr,   ' HSTRING optional
    startIndex As UInteger,   ' DWORD
    newString As IntPtr   ' HSTRING* out
) As Integer
End Function

' string : HSTRING optional
' startIndex : DWORD
' newString : HSTRING* out
Declare PtrSafe Function WindowsSubstring Lib "api-ms-win-core-winrt-string-l1-1-0" ( _
    ByVal string As LongPtr, _
    ByVal startIndex As Long, _
    ByVal newString 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

WindowsSubstring = ctypes.windll.LoadLibrary("api-ms-win-core-winrt-string-l1-1-0.dll").WindowsSubstring
WindowsSubstring.restype = ctypes.c_int
WindowsSubstring.argtypes = [
    wintypes.HANDLE,  # string : HSTRING optional
    wintypes.DWORD,  # startIndex : DWORD
    ctypes.c_void_p,  # newString : HSTRING* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('api-ms-win-core-winrt-string-l1-1-0.dll')
WindowsSubstring = Fiddle::Function.new(
  lib['WindowsSubstring'],
  [
    Fiddle::TYPE_VOIDP,  # string : HSTRING optional
    -Fiddle::TYPE_INT,  # startIndex : DWORD
    Fiddle::TYPE_VOIDP,  # newString : HSTRING* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "api-ms-win-core-winrt-string-l1-1-0")]
extern "system" {
    fn WindowsSubstring(
        string: *mut core::ffi::c_void,  // HSTRING optional
        startIndex: u32,  // DWORD
        newString: *mut *mut core::ffi::c_void  // HSTRING* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("api-ms-win-core-winrt-string-l1-1-0.dll")]
public static extern int WindowsSubstring(IntPtr string, uint startIndex, IntPtr newString);
"@
$api = Add-Type -MemberDefinition $sig -Name 'api-ms-win-core-winrt-string-l1-1-0_WindowsSubstring' -Namespace Win32 -PassThru
# $api::WindowsSubstring(string, startIndex, newString)

#uselib "api-ms-win-core-winrt-string-l1-1-0.dll"
#func global WindowsSubstring "WindowsSubstring" sptr, sptr, sptr
; WindowsSubstring string, startIndex, newString   ; 戻り値は stat
; string : HSTRING optional -> "sptr"
; startIndex : DWORD -> "sptr"
; newString : HSTRING* 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 "api-ms-win-core-winrt-string-l1-1-0.dll"
#cfunc global WindowsSubstring "WindowsSubstring" sptr, int, sptr
; res = WindowsSubstring(string, startIndex, newString)
; string : HSTRING optional -> "sptr"
; startIndex : DWORD -> "int"
; newString : HSTRING* out -> "sptr"

; HRESULT WindowsSubstring(HSTRING string, DWORD startIndex, HSTRING* newString)
#uselib "api-ms-win-core-winrt-string-l1-1-0.dll"
#cfunc global WindowsSubstring "WindowsSubstring" intptr, int, intptr
; res = WindowsSubstring(string, startIndex, newString)
; string : HSTRING optional -> "intptr"
; startIndex : DWORD -> "int"
; newString : HSTRING* out -> "intptr"

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

var (
	api_ms_win_core_winrt_string_l1_1_0 = windows.NewLazySystemDLL("api-ms-win-core-winrt-string-l1-1-0.dll")
	procWindowsSubstring = api_ms_win_core_winrt_string_l1_1_0.NewProc("WindowsSubstring")
)

// string (HSTRING optional), startIndex (DWORD), newString (HSTRING* out)
r1, _, err := procWindowsSubstring.Call(
	uintptr(string),
	uintptr(startIndex),
	uintptr(newString),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WindowsSubstring(
  string: THandle;   // HSTRING optional
  startIndex: DWORD;   // DWORD
  newString: Pointer   // HSTRING* out
): Integer; stdcall;
  external 'api-ms-win-core-winrt-string-l1-1-0.dll' name 'WindowsSubstring';

result := DllCall("api-ms-win-core-winrt-string-l1-1-0\WindowsSubstring"
    , "Ptr", string   ; HSTRING optional
    , "UInt", startIndex   ; DWORD
    , "Ptr", newString   ; HSTRING* out
    , "Int")   ; return: HRESULT

●WindowsSubstring(string, startIndex, newString) = DLL("api-ms-win-core-winrt-string-l1-1-0.dll", "int WindowsSubstring(void*, dword, void*)")
# 呼び出し: WindowsSubstring(string, startIndex, newString)
# string : HSTRING optional -> "void*"
# startIndex : DWORD -> "dword"
# newString : HSTRING* 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)。