StrToIntA

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

INT StrToIntA(
    LPCSTR pszSrc
);

<DllImport("SHLWAPI.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function StrToIntA(
    <MarshalAs(UnmanagedType.LPStr)> pszSrc As String   ' LPCSTR
) As Integer
End Function

' pszSrc : LPCSTR
Declare PtrSafe Function StrToIntA Lib "shlwapi" ( _
    ByVal pszSrc 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

StrToIntA = ctypes.windll.shlwapi.StrToIntA
StrToIntA.restype = ctypes.c_int
StrToIntA.argtypes = [
    wintypes.LPCSTR,  # pszSrc : LPCSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
StrToIntA = Fiddle::Function.new(
  lib['StrToIntA'],
  [
    Fiddle::TYPE_VOIDP,  # pszSrc : LPCSTR
  ],
  Fiddle::TYPE_INT)

#[link(name = "shlwapi")]
extern "system" {
    fn StrToIntA(
        pszSrc: *const u8  // LPCSTR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll", CharSet = CharSet.Ansi)]
public static extern int StrToIntA([MarshalAs(UnmanagedType.LPStr)] string pszSrc);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_StrToIntA' -Namespace Win32 -PassThru
# $api::StrToIntA(pszSrc)

#uselib "SHLWAPI.dll"
#func global StrToIntA "StrToIntA" sptr
; StrToIntA pszSrc   ; 戻り値は stat
; pszSrc : 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 "SHLWAPI.dll"
#cfunc global StrToIntA "StrToIntA" str
; res = StrToIntA(pszSrc)
; pszSrc : LPCSTR -> "str"

; INT StrToIntA(LPCSTR pszSrc)
#uselib "SHLWAPI.dll"
#cfunc global StrToIntA "StrToIntA" str
; res = StrToIntA(pszSrc)
; pszSrc : LPCSTR -> "str"

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

var (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procStrToIntA = shlwapi.NewProc("StrToIntA")
)

// pszSrc (LPCSTR)
r1, _, err := procStrToIntA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pszSrc))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function StrToIntA(
  pszSrc: PAnsiChar   // LPCSTR
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'StrToIntA';

result := DllCall("SHLWAPI\StrToIntA"
    , "AStr", pszSrc   ; LPCSTR
    , "Int")   ; return: INT

●StrToIntA(pszSrc) = DLL("SHLWAPI.dll", "int StrToIntA(char*)")
# 呼び出し: StrToIntA(pszSrc)
# pszSrc : 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)。