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HlinkGetValueFromParams

関数

パラメータ文字列から指定名の値を取り出す。

DLLhlink.dll呼出規約winapi

シグネチャ

// hlink.dll
#include <windows.h>

HRESULT HlinkGetValueFromParams(
    LPCWSTR pwzParams,
    LPCWSTR pwzName,
    LPWSTR* ppwzValue
);

パラメーター

名前	型	方向
pwzParams	LPCWSTR	in
pwzName	LPCWSTR	in
ppwzValue	LPWSTR*	out

戻り値の型: HRESULT

各言語での呼び出し定義

// hlink.dll
#include <windows.h>

HRESULT HlinkGetValueFromParams(
    LPCWSTR pwzParams,
    LPCWSTR pwzName,
    LPWSTR* ppwzValue
);

[DllImport("hlink.dll", ExactSpelling = true)]
static extern int HlinkGetValueFromParams(
    [MarshalAs(UnmanagedType.LPWStr)] string pwzParams,   // LPCWSTR
    [MarshalAs(UnmanagedType.LPWStr)] string pwzName,   // LPCWSTR
    IntPtr ppwzValue   // LPWSTR* out
);

<DllImport("hlink.dll", ExactSpelling:=True)>
Public Shared Function HlinkGetValueFromParams(
    <MarshalAs(UnmanagedType.LPWStr)> pwzParams As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> pwzName As String,   ' LPCWSTR
    ppwzValue As IntPtr   ' LPWSTR* out
) As Integer
End Function

' pwzParams : LPCWSTR
' pwzName : LPCWSTR
' ppwzValue : LPWSTR* out
Declare PtrSafe Function HlinkGetValueFromParams Lib "hlink" ( _
    ByVal pwzParams As LongPtr, _
    ByVal pwzName As LongPtr, _
    ByVal ppwzValue 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

HlinkGetValueFromParams = ctypes.windll.hlink.HlinkGetValueFromParams
HlinkGetValueFromParams.restype = ctypes.c_int
HlinkGetValueFromParams.argtypes = [
    wintypes.LPCWSTR,  # pwzParams : LPCWSTR
    wintypes.LPCWSTR,  # pwzName : LPCWSTR
    ctypes.c_void_p,  # ppwzValue : LPWSTR* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('hlink.dll')
HlinkGetValueFromParams = Fiddle::Function.new(
  lib['HlinkGetValueFromParams'],
  [
    Fiddle::TYPE_VOIDP,  # pwzParams : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pwzName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # ppwzValue : LPWSTR* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "hlink")]
extern "system" {
    fn HlinkGetValueFromParams(
        pwzParams: *const u16,  // LPCWSTR
        pwzName: *const u16,  // LPCWSTR
        ppwzValue: *mut *mut u16  // LPWSTR* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("hlink.dll")]
public static extern int HlinkGetValueFromParams([MarshalAs(UnmanagedType.LPWStr)] string pwzParams, [MarshalAs(UnmanagedType.LPWStr)] string pwzName, IntPtr ppwzValue);
"@
$api = Add-Type -MemberDefinition $sig -Name 'hlink_HlinkGetValueFromParams' -Namespace Win32 -PassThru
# $api::HlinkGetValueFromParams(pwzParams, pwzName, ppwzValue)

#uselib "hlink.dll"
#func global HlinkGetValueFromParams "HlinkGetValueFromParams" sptr, sptr, sptr
; HlinkGetValueFromParams pwzParams, pwzName, varptr(ppwzValue)   ; 戻り値は stat
; pwzParams : LPCWSTR -> "sptr"
; pwzName : LPCWSTR -> "sptr"
; ppwzValue : LPWSTR* 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 "hlink.dll"
#cfunc global HlinkGetValueFromParams "HlinkGetValueFromParams" wstr, wstr, var
; res = HlinkGetValueFromParams(pwzParams, pwzName, ppwzValue)
; pwzParams : LPCWSTR -> "wstr"
; pwzName : LPCWSTR -> "wstr"
; ppwzValue : LPWSTR* 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 "hlink.dll"
#cfunc global HlinkGetValueFromParams "HlinkGetValueFromParams" wstr, wstr, sptr
; res = HlinkGetValueFromParams(pwzParams, pwzName, varptr(ppwzValue))
; pwzParams : LPCWSTR -> "wstr"
; pwzName : LPCWSTR -> "wstr"
; ppwzValue : LPWSTR* 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:

; HRESULT HlinkGetValueFromParams(LPCWSTR pwzParams, LPCWSTR pwzName, LPWSTR* ppwzValue)
#uselib "hlink.dll"
#cfunc global HlinkGetValueFromParams "HlinkGetValueFromParams" wstr, wstr, var
; res = HlinkGetValueFromParams(pwzParams, pwzName, ppwzValue)
; pwzParams : LPCWSTR -> "wstr"
; pwzName : LPCWSTR -> "wstr"
; ppwzValue : LPWSTR* 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。; HRESULT HlinkGetValueFromParams(LPCWSTR pwzParams, LPCWSTR pwzName, LPWSTR* ppwzValue)
#uselib "hlink.dll"
#cfunc global HlinkGetValueFromParams "HlinkGetValueFromParams" wstr, wstr, intptr
; res = HlinkGetValueFromParams(pwzParams, pwzName, varptr(ppwzValue))
; pwzParams : LPCWSTR -> "wstr"
; pwzName : LPCWSTR -> "wstr"
; ppwzValue : LPWSTR* 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 (
	hlink = windows.NewLazySystemDLL("hlink.dll")
	procHlinkGetValueFromParams = hlink.NewProc("HlinkGetValueFromParams")
)

// pwzParams (LPCWSTR), pwzName (LPCWSTR), ppwzValue (LPWSTR* out)
r1, _, err := procHlinkGetValueFromParams.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwzParams))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwzName))),
	uintptr(ppwzValue),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function HlinkGetValueFromParams(
  pwzParams: PWideChar;   // LPCWSTR
  pwzName: PWideChar;   // LPCWSTR
  ppwzValue: PPWideChar   // LPWSTR* out
): Integer; stdcall;
  external 'hlink.dll' name 'HlinkGetValueFromParams';

result := DllCall("hlink\HlinkGetValueFromParams"
    , "WStr", pwzParams   ; LPCWSTR
    , "WStr", pwzName   ; LPCWSTR
    , "Ptr", ppwzValue   ; LPWSTR* out
    , "Int")   ; return: HRESULT

●HlinkGetValueFromParams(pwzParams, pwzName, ppwzValue) = DLL("hlink.dll", "int HlinkGetValueFromParams(char*, char*, void*)")
# 呼び出し: HlinkGetValueFromParams(pwzParams, pwzName, ppwzValue)
# pwzParams : LPCWSTR -> "char*"
# pwzName : LPCWSTR -> "char*"
# ppwzValue : LPWSTR* 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)。