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SetupGetLineTextA

関数

INFの指定行またはキーのテキストを取得する(ANSI)。

DLLSETUPAPI.dll文字セットANSI (-A)呼出規約winapiSetLastErrorあり対応OSWindows XP 以降

シグネチャ

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

BOOL SetupGetLineTextA(
    INFCONTEXT* Context,   // optional
    void* InfHandle,   // optional
    LPCSTR Section,   // optional
    LPCSTR Key,   // optional
    LPSTR ReturnBuffer,   // optional
    DWORD ReturnBufferSize,
    DWORD* RequiredSize   // optional
);

パラメーター

名前	型	方向	説明
Context	INFCONTEXT*	inoptional	対象行を示すINFCONTEXT構造体へのポインタ。NULLの場合はInfHandle/Section/Keyで指定する。
InfHandle	void*	inoptional	ContextがNULLのとき使う開いているINFハンドル。
Section	LPCSTR	inoptional	ContextがNULLのとき使うセクション名(ANSI)。
Key	LPCSTR	inoptional	ContextがNULLのとき使うキー名(ANSI)。
ReturnBuffer	LPSTR	outoptional	行のテキスト全体を受け取る文字列バッファ(ANSI)。NULLでサイズ取得のみ可。
ReturnBufferSize	DWORD	in	ReturnBufferのサイズ(文字数)。
RequiredSize	DWORD*	outoptional	必要なバッファサイズを受け取る出力ポインタ。NULL可。

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL SetupGetLineTextA(
    INFCONTEXT* Context,   // optional
    void* InfHandle,   // optional
    LPCSTR Section,   // optional
    LPCSTR Key,   // optional
    LPSTR ReturnBuffer,   // optional
    DWORD ReturnBufferSize,
    DWORD* RequiredSize   // optional
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SETUPAPI.dll", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
static extern bool SetupGetLineTextA(
    IntPtr Context,   // INFCONTEXT* optional
    IntPtr InfHandle,   // void* optional
    [MarshalAs(UnmanagedType.LPStr)] string Section,   // LPCSTR optional
    [MarshalAs(UnmanagedType.LPStr)] string Key,   // LPCSTR optional
    [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder ReturnBuffer,   // LPSTR optional, out
    uint ReturnBufferSize,   // DWORD
    IntPtr RequiredSize   // DWORD* optional, out
);

<DllImport("SETUPAPI.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetupGetLineTextA(
    Context As IntPtr,   ' INFCONTEXT* optional
    InfHandle As IntPtr,   ' void* optional
    <MarshalAs(UnmanagedType.LPStr)> Section As String,   ' LPCSTR optional
    <MarshalAs(UnmanagedType.LPStr)> Key As String,   ' LPCSTR optional
    <MarshalAs(UnmanagedType.LPStr)> ReturnBuffer As System.Text.StringBuilder,   ' LPSTR optional, out
    ReturnBufferSize As UInteger,   ' DWORD
    RequiredSize As IntPtr   ' DWORD* optional, out
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' Context : INFCONTEXT* optional
' InfHandle : void* optional
' Section : LPCSTR optional
' Key : LPCSTR optional
' ReturnBuffer : LPSTR optional, out
' ReturnBufferSize : DWORD
' RequiredSize : DWORD* optional, out
Declare PtrSafe Function SetupGetLineTextA Lib "setupapi" ( _
    ByVal Context As LongPtr, _
    ByVal InfHandle As LongPtr, _
    ByVal Section As String, _
    ByVal Key As String, _
    ByVal ReturnBuffer As String, _
    ByVal ReturnBufferSize As Long, _
    ByVal RequiredSize 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

SetupGetLineTextA = ctypes.windll.setupapi.SetupGetLineTextA
SetupGetLineTextA.restype = wintypes.BOOL
SetupGetLineTextA.argtypes = [
    ctypes.c_void_p,  # Context : INFCONTEXT* optional
    ctypes.POINTER(None),  # InfHandle : void* optional
    wintypes.LPCSTR,  # Section : LPCSTR optional
    wintypes.LPCSTR,  # Key : LPCSTR optional
    wintypes.LPSTR,  # ReturnBuffer : LPSTR optional, out
    wintypes.DWORD,  # ReturnBufferSize : DWORD
    ctypes.POINTER(wintypes.DWORD),  # RequiredSize : DWORD* optional, out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SETUPAPI.dll')
SetupGetLineTextA = Fiddle::Function.new(
  lib['SetupGetLineTextA'],
  [
    Fiddle::TYPE_VOIDP,  # Context : INFCONTEXT* optional
    Fiddle::TYPE_VOIDP,  # InfHandle : void* optional
    Fiddle::TYPE_VOIDP,  # Section : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # Key : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # ReturnBuffer : LPSTR optional, out
    -Fiddle::TYPE_INT,  # ReturnBufferSize : DWORD
    Fiddle::TYPE_VOIDP,  # RequiredSize : DWORD* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "setupapi")]
extern "system" {
    fn SetupGetLineTextA(
        Context: *mut INFCONTEXT,  // INFCONTEXT* optional
        InfHandle: *mut (),  // void* optional
        Section: *const u8,  // LPCSTR optional
        Key: *const u8,  // LPCSTR optional
        ReturnBuffer: *mut u8,  // LPSTR optional, out
        ReturnBufferSize: u32,  // DWORD
        RequiredSize: *mut u32  // DWORD* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SETUPAPI.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool SetupGetLineTextA(IntPtr Context, IntPtr InfHandle, [MarshalAs(UnmanagedType.LPStr)] string Section, [MarshalAs(UnmanagedType.LPStr)] string Key, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder ReturnBuffer, uint ReturnBufferSize, IntPtr RequiredSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SETUPAPI_SetupGetLineTextA' -Namespace Win32 -PassThru
# $api::SetupGetLineTextA(Context, InfHandle, Section, Key, ReturnBuffer, ReturnBufferSize, RequiredSize)

#uselib "SETUPAPI.dll"
#func global SetupGetLineTextA "SetupGetLineTextA" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; SetupGetLineTextA varptr(Context), InfHandle, Section, Key, varptr(ReturnBuffer), ReturnBufferSize, varptr(RequiredSize)   ; 戻り値は stat
; Context : INFCONTEXT* optional -> "sptr"
; InfHandle : void* optional -> "sptr"
; Section : LPCSTR optional -> "sptr"
; Key : LPCSTR optional -> "sptr"
; ReturnBuffer : LPSTR optional, out -> "sptr"
; ReturnBufferSize : DWORD -> "sptr"
; RequiredSize : DWORD* optional, 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。

出力引数:

#uselib "SETUPAPI.dll"
#cfunc global SetupGetLineTextA "SetupGetLineTextA" var, sptr, str, str, var, int, var
; res = SetupGetLineTextA(Context, InfHandle, Section, Key, ReturnBuffer, ReturnBufferSize, RequiredSize)
; Context : INFCONTEXT* optional -> "var"
; InfHandle : void* optional -> "sptr"
; Section : LPCSTR optional -> "str"
; Key : LPCSTR optional -> "str"
; ReturnBuffer : LPSTR optional, out -> "var"
; ReturnBufferSize : DWORD -> "int"
; RequiredSize : DWORD* optional, 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。#uselib "SETUPAPI.dll"
#cfunc global SetupGetLineTextA "SetupGetLineTextA" sptr, sptr, str, str, sptr, int, sptr
; res = SetupGetLineTextA(varptr(Context), InfHandle, Section, Key, varptr(ReturnBuffer), ReturnBufferSize, varptr(RequiredSize))
; Context : INFCONTEXT* optional -> "sptr"
; InfHandle : void* optional -> "sptr"
; Section : LPCSTR optional -> "str"
; Key : LPCSTR optional -> "str"
; ReturnBuffer : LPSTR optional, out -> "sptr"
; ReturnBufferSize : DWORD -> "int"
; RequiredSize : DWORD* optional, out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; BOOL SetupGetLineTextA(INFCONTEXT* Context, void* InfHandle, LPCSTR Section, LPCSTR Key, LPSTR ReturnBuffer, DWORD ReturnBufferSize, DWORD* RequiredSize)
#uselib "SETUPAPI.dll"
#cfunc global SetupGetLineTextA "SetupGetLineTextA" var, intptr, str, str, var, int, var
; res = SetupGetLineTextA(Context, InfHandle, Section, Key, ReturnBuffer, ReturnBufferSize, RequiredSize)
; Context : INFCONTEXT* optional -> "var"
; InfHandle : void* optional -> "intptr"
; Section : LPCSTR optional -> "str"
; Key : LPCSTR optional -> "str"
; ReturnBuffer : LPSTR optional, out -> "var"
; ReturnBufferSize : DWORD -> "int"
; RequiredSize : DWORD* optional, 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。; BOOL SetupGetLineTextA(INFCONTEXT* Context, void* InfHandle, LPCSTR Section, LPCSTR Key, LPSTR ReturnBuffer, DWORD ReturnBufferSize, DWORD* RequiredSize)
#uselib "SETUPAPI.dll"
#cfunc global SetupGetLineTextA "SetupGetLineTextA" intptr, intptr, str, str, intptr, int, intptr
; res = SetupGetLineTextA(varptr(Context), InfHandle, Section, Key, varptr(ReturnBuffer), ReturnBufferSize, varptr(RequiredSize))
; Context : INFCONTEXT* optional -> "intptr"
; InfHandle : void* optional -> "intptr"
; Section : LPCSTR optional -> "str"
; Key : LPCSTR optional -> "str"
; ReturnBuffer : LPSTR optional, out -> "intptr"
; ReturnBufferSize : DWORD -> "int"
; RequiredSize : DWORD* optional, out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	setupapi = windows.NewLazySystemDLL("SETUPAPI.dll")
	procSetupGetLineTextA = setupapi.NewProc("SetupGetLineTextA")
)

// Context (INFCONTEXT* optional), InfHandle (void* optional), Section (LPCSTR optional), Key (LPCSTR optional), ReturnBuffer (LPSTR optional, out), ReturnBufferSize (DWORD), RequiredSize (DWORD* optional, out)
r1, _, err := procSetupGetLineTextA.Call(
	uintptr(Context),
	uintptr(InfHandle),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(Section))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(Key))),
	uintptr(ReturnBuffer),
	uintptr(ReturnBufferSize),
	uintptr(RequiredSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetupGetLineTextA(
  Context: Pointer;   // INFCONTEXT* optional
  InfHandle: Pointer;   // void* optional
  Section: PAnsiChar;   // LPCSTR optional
  Key: PAnsiChar;   // LPCSTR optional
  ReturnBuffer: PAnsiChar;   // LPSTR optional, out
  ReturnBufferSize: DWORD;   // DWORD
  RequiredSize: Pointer   // DWORD* optional, out
): BOOL; stdcall;
  external 'SETUPAPI.dll' name 'SetupGetLineTextA';

result := DllCall("SETUPAPI\SetupGetLineTextA"
    , "Ptr", Context   ; INFCONTEXT* optional
    , "Ptr", InfHandle   ; void* optional
    , "AStr", Section   ; LPCSTR optional
    , "AStr", Key   ; LPCSTR optional
    , "Ptr", ReturnBuffer   ; LPSTR optional, out
    , "UInt", ReturnBufferSize   ; DWORD
    , "Ptr", RequiredSize   ; DWORD* optional, out
    , "Int")   ; return: BOOL

●SetupGetLineTextA(Context, InfHandle, Section, Key, ReturnBuffer, ReturnBufferSize, RequiredSize) = DLL("SETUPAPI.dll", "bool SetupGetLineTextA(void*, void*, char*, char*, char*, dword, void*)")
# 呼び出し: SetupGetLineTextA(Context, InfHandle, Section, Key, ReturnBuffer, ReturnBufferSize, RequiredSize)
# Context : INFCONTEXT* optional -> "void*"
# InfHandle : void* optional -> "void*"
# Section : LPCSTR optional -> "char*"
# Key : LPCSTR optional -> "char*"
# ReturnBuffer : LPSTR optional, out -> "char*"
# ReturnBufferSize : DWORD -> "dword"
# RequiredSize : DWORD* optional, 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)。

const std = @import("std");

extern "setupapi" fn SetupGetLineTextA(
    Context: [*c]INFCONTEXT, // INFCONTEXT* optional
    InfHandle: ?*anyopaque, // void* optional
    Section: [*c]const u8, // LPCSTR optional
    Key: [*c]const u8, // LPCSTR optional
    ReturnBuffer: [*c]u8, // LPSTR optional, out
    ReturnBufferSize: u32, // DWORD
    RequiredSize: [*c]u32 // DWORD* optional, out
) callconv(std.os.windows.WINAPI) i32;

proc SetupGetLineTextA(
    Context: ptr INFCONTEXT,  # INFCONTEXT* optional
    InfHandle: pointer,  # void* optional
    Section: cstring,  # LPCSTR optional
    Key: cstring,  # LPCSTR optional
    ReturnBuffer: ptr char,  # LPSTR optional, out
    ReturnBufferSize: uint32,  # DWORD
    RequiredSize: ptr uint32  # DWORD* optional, out
): int32 {.importc: "SetupGetLineTextA", stdcall, dynlib: "SETUPAPI.dll".}

pragma(lib, "setupapi");
extern(Windows)
int SetupGetLineTextA(
    INFCONTEXT* Context,   // INFCONTEXT* optional
    void* InfHandle,   // void* optional
    const(char)* Section,   // LPCSTR optional
    const(char)* Key,   // LPCSTR optional
    char* ReturnBuffer,   // LPSTR optional, out
    uint ReturnBufferSize,   // DWORD
    uint* RequiredSize   // DWORD* optional, out
);

ccall((:SetupGetLineTextA, "SETUPAPI.dll"), stdcall, Int32,
      (Ptr{INFCONTEXT}, Ptr{Cvoid}, Cstring, Cstring, Ptr{UInt8}, UInt32, Ptr{UInt32}),
      Context, InfHandle, Section, Key, ReturnBuffer, ReturnBufferSize, RequiredSize)
# Context : INFCONTEXT* optional -> Ptr{INFCONTEXT}
# InfHandle : void* optional -> Ptr{Cvoid}
# Section : LPCSTR optional -> Cstring
# Key : LPCSTR optional -> Cstring
# ReturnBuffer : LPSTR optional, out -> Ptr{UInt8}
# ReturnBufferSize : DWORD -> UInt32
# RequiredSize : DWORD* optional, out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t SetupGetLineTextA(
    void* Context,
    void* InfHandle,
    const char* Section,
    const char* Key,
    char* ReturnBuffer,
    uint32_t ReturnBufferSize,
    uint32_t* RequiredSize);
]]
local setupapi = ffi.load("setupapi")
-- setupapi.SetupGetLineTextA(Context, InfHandle, Section, Key, ReturnBuffer, ReturnBufferSize, RequiredSize)
-- Context : INFCONTEXT* optional
-- InfHandle : void* optional
-- Section : LPCSTR optional
-- Key : LPCSTR optional
-- ReturnBuffer : LPSTR optional, out
-- ReturnBufferSize : DWORD
-- RequiredSize : DWORD* optional, out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('SETUPAPI.dll');
const SetupGetLineTextA = lib.func('__stdcall', 'SetupGetLineTextA', 'int32_t', ['void *', 'void *', 'str', 'str', 'char *', 'uint32_t', 'uint32_t *']);
// SetupGetLineTextA(Context, InfHandle, Section, Key, ReturnBuffer, ReturnBufferSize, RequiredSize)
// Context : INFCONTEXT* optional -> 'void *'
// InfHandle : void* optional -> 'void *'
// Section : LPCSTR optional -> 'str'
// Key : LPCSTR optional -> 'str'
// ReturnBuffer : LPSTR optional, out -> 'char *'
// ReturnBufferSize : DWORD -> 'uint32_t'
// RequiredSize : DWORD* optional, out -> 'uint32_t *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("SETUPAPI.dll", {
  SetupGetLineTextA: { parameters: ["pointer", "pointer", "buffer", "buffer", "buffer", "u32", "pointer"], result: "i32" },
});
// lib.symbols.SetupGetLineTextA(Context, InfHandle, Section, Key, ReturnBuffer, ReturnBufferSize, RequiredSize)
// Context : INFCONTEXT* optional -> "pointer"
// InfHandle : void* optional -> "pointer"
// Section : LPCSTR optional -> "buffer"
// Key : LPCSTR optional -> "buffer"
// ReturnBuffer : LPSTR optional, out -> "buffer"
// ReturnBufferSize : DWORD -> "u32"
// RequiredSize : DWORD* optional, out -> "pointer"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t SetupGetLineTextA(
    void* Context,
    void* InfHandle,
    const char* Section,
    const char* Key,
    char* ReturnBuffer,
    uint32_t ReturnBufferSize,
    uint32_t* RequiredSize);
C, "SETUPAPI.dll");
// $ffi->SetupGetLineTextA(Context, InfHandle, Section, Key, ReturnBuffer, ReturnBufferSize, RequiredSize);
// Context : INFCONTEXT* optional
// InfHandle : void* optional
// Section : LPCSTR optional
// Key : LPCSTR optional
// ReturnBuffer : LPSTR optional, out
// ReturnBufferSize : DWORD
// RequiredSize : DWORD* optional, out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Setupapi extends StdCallLibrary {
    Setupapi INSTANCE = Native.load("setupapi", Setupapi.class, W32APIOptions.ASCII_OPTIONS);
    boolean SetupGetLineTextA(
        Pointer Context,   // INFCONTEXT* optional
        Pointer InfHandle,   // void* optional
        String Section,   // LPCSTR optional
        String Key,   // LPCSTR optional
        byte[] ReturnBuffer,   // LPSTR optional, out
        int ReturnBufferSize,   // DWORD
        IntByReference RequiredSize   // DWORD* optional, out
    );
}

@[Link("setupapi")]
lib LibSETUPAPI
  fun SetupGetLineTextA = SetupGetLineTextA(
    Context : INFCONTEXT*,   # INFCONTEXT* optional
    InfHandle : Void*,   # void* optional
    Section : UInt8*,   # LPCSTR optional
    Key : UInt8*,   # LPCSTR optional
    ReturnBuffer : UInt8*,   # LPSTR optional, out
    ReturnBufferSize : UInt32,   # DWORD
    RequiredSize : UInt32*   # DWORD* optional, out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef SetupGetLineTextANative = Int32 Function(Pointer<Void>, Pointer<Void>, Pointer<Utf8>, Pointer<Utf8>, Pointer<Utf8>, Uint32, Pointer<Uint32>);
typedef SetupGetLineTextADart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Utf8>, Pointer<Utf8>, Pointer<Utf8>, int, Pointer<Uint32>);
final SetupGetLineTextA = DynamicLibrary.open('SETUPAPI.dll')
    .lookupFunction<SetupGetLineTextANative, SetupGetLineTextADart>('SetupGetLineTextA');
// Context : INFCONTEXT* optional -> Pointer<Void>
// InfHandle : void* optional -> Pointer<Void>
// Section : LPCSTR optional -> Pointer<Utf8>
// Key : LPCSTR optional -> Pointer<Utf8>
// ReturnBuffer : LPSTR optional, out -> Pointer<Utf8>
// ReturnBufferSize : DWORD -> Uint32
// RequiredSize : DWORD* optional, out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SetupGetLineTextA(
  Context: Pointer;   // INFCONTEXT* optional
  InfHandle: Pointer;   // void* optional
  Section: PAnsiChar;   // LPCSTR optional
  Key: PAnsiChar;   // LPCSTR optional
  ReturnBuffer: PAnsiChar;   // LPSTR optional, out
  ReturnBufferSize: DWORD;   // DWORD
  RequiredSize: Pointer   // DWORD* optional, out
): BOOL; stdcall;
  external 'SETUPAPI.dll' name 'SetupGetLineTextA';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "SetupGetLineTextA"
  c_SetupGetLineTextA :: Ptr () -> Ptr () -> CString -> CString -> CString -> Word32 -> Ptr Word32 -> IO CInt
-- Context : INFCONTEXT* optional -> Ptr ()
-- InfHandle : void* optional -> Ptr ()
-- Section : LPCSTR optional -> CString
-- Key : LPCSTR optional -> CString
-- ReturnBuffer : LPSTR optional, out -> CString
-- ReturnBufferSize : DWORD -> Word32
-- RequiredSize : DWORD* optional, out -> Ptr Word32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let setupgetlinetexta =
  foreign "SetupGetLineTextA"
    ((ptr void) @-> (ptr void) @-> string @-> string @-> string @-> uint32_t @-> (ptr uint32_t) @-> returning int32_t)
(* Context : INFCONTEXT* optional -> (ptr void) *)
(* InfHandle : void* optional -> (ptr void) *)
(* Section : LPCSTR optional -> string *)
(* Key : LPCSTR optional -> string *)
(* ReturnBuffer : LPSTR optional, out -> string *)
(* ReturnBufferSize : DWORD -> uint32_t *)
(* RequiredSize : DWORD* optional, out -> (ptr uint32_t) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library setupapi (t "SETUPAPI.dll"))
(cffi:use-foreign-library setupapi)

(cffi:defcfun ("SetupGetLineTextA" setup-get-line-text-a :convention :stdcall) :int32
  (context :pointer)   ; INFCONTEXT* optional
  (inf-handle :pointer)   ; void* optional
  (section :string)   ; LPCSTR optional
  (key :string)   ; LPCSTR optional
  (return-buffer :pointer)   ; LPSTR optional, out
  (return-buffer-size :uint32)   ; DWORD
  (required-size :pointer))   ; DWORD* optional, out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SetupGetLineTextA = Win32::API::More->new('SETUPAPI',
    'BOOL SetupGetLineTextA(LPVOID Context, LPVOID InfHandle, LPCSTR Section, LPCSTR Key, LPSTR ReturnBuffer, DWORD ReturnBufferSize, LPVOID RequiredSize)');
# my $ret = $SetupGetLineTextA->Call($Context, $InfHandle, $Section, $Key, $ReturnBuffer, $ReturnBufferSize, $RequiredSize);
# Context : INFCONTEXT* optional -> LPVOID
# InfHandle : void* optional -> LPVOID
# Section : LPCSTR optional -> LPCSTR
# Key : LPCSTR optional -> LPCSTR
# ReturnBuffer : LPSTR optional, out -> LPSTR
# ReturnBufferSize : DWORD -> DWORD
# RequiredSize : DWORD* optional, out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

SetupGetLineTextA

シグネチャ

パラメーター

各言語での呼び出し定義

関連項目