MsiQueryFeatureStateExA

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

DWORD MsiQueryFeatureStateExA(
    LPCSTR szProductCode,
    LPCSTR szUserSid,   // optional
    MSIINSTALLCONTEXT dwContext,
    LPCSTR szFeature,
    INSTALLSTATE* pdwState   // optional
);

<DllImport("msi.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function MsiQueryFeatureStateExA(
    <MarshalAs(UnmanagedType.LPStr)> szProductCode As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> szUserSid As String,   ' LPCSTR optional
    dwContext As Integer,   ' MSIINSTALLCONTEXT
    <MarshalAs(UnmanagedType.LPStr)> szFeature As String,   ' LPCSTR
    pdwState As IntPtr   ' INSTALLSTATE* optional, out
) As UInteger
End Function

' szProductCode : LPCSTR
' szUserSid : LPCSTR optional
' dwContext : MSIINSTALLCONTEXT
' szFeature : LPCSTR
' pdwState : INSTALLSTATE* optional, out
Declare PtrSafe Function MsiQueryFeatureStateExA Lib "msi" ( _
    ByVal szProductCode As String, _
    ByVal szUserSid As String, _
    ByVal dwContext As Long, _
    ByVal szFeature As String, _
    ByVal pdwState 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

MsiQueryFeatureStateExA = ctypes.windll.msi.MsiQueryFeatureStateExA
MsiQueryFeatureStateExA.restype = wintypes.DWORD
MsiQueryFeatureStateExA.argtypes = [
    wintypes.LPCSTR,  # szProductCode : LPCSTR
    wintypes.LPCSTR,  # szUserSid : LPCSTR optional
    ctypes.c_int,  # dwContext : MSIINSTALLCONTEXT
    wintypes.LPCSTR,  # szFeature : LPCSTR
    ctypes.c_void_p,  # pdwState : INSTALLSTATE* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiQueryFeatureStateExA = Fiddle::Function.new(
  lib['MsiQueryFeatureStateExA'],
  [
    Fiddle::TYPE_VOIDP,  # szProductCode : LPCSTR
    Fiddle::TYPE_VOIDP,  # szUserSid : LPCSTR optional
    Fiddle::TYPE_INT,  # dwContext : MSIINSTALLCONTEXT
    Fiddle::TYPE_VOIDP,  # szFeature : LPCSTR
    Fiddle::TYPE_VOIDP,  # pdwState : INSTALLSTATE* optional, out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "msi")]
extern "system" {
    fn MsiQueryFeatureStateExA(
        szProductCode: *const u8,  // LPCSTR
        szUserSid: *const u8,  // LPCSTR optional
        dwContext: i32,  // MSIINSTALLCONTEXT
        szFeature: *const u8,  // LPCSTR
        pdwState: *mut i32  // INSTALLSTATE* optional, out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll", CharSet = CharSet.Ansi)]
public static extern uint MsiQueryFeatureStateExA([MarshalAs(UnmanagedType.LPStr)] string szProductCode, [MarshalAs(UnmanagedType.LPStr)] string szUserSid, int dwContext, [MarshalAs(UnmanagedType.LPStr)] string szFeature, IntPtr pdwState);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiQueryFeatureStateExA' -Namespace Win32 -PassThru
# $api::MsiQueryFeatureStateExA(szProductCode, szUserSid, dwContext, szFeature, pdwState)

#uselib "msi.dll"
#func global MsiQueryFeatureStateExA "MsiQueryFeatureStateExA" sptr, sptr, sptr, sptr, sptr
; MsiQueryFeatureStateExA szProductCode, szUserSid, dwContext, szFeature, pdwState   ; 戻り値は stat
; szProductCode : LPCSTR -> "sptr"
; szUserSid : LPCSTR optional -> "sptr"
; dwContext : MSIINSTALLCONTEXT -> "sptr"
; szFeature : LPCSTR -> "sptr"
; pdwState : INSTALLSTATE* 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。

#uselib "msi.dll"
#cfunc global MsiQueryFeatureStateExA "MsiQueryFeatureStateExA" str, str, int, str, int
; res = MsiQueryFeatureStateExA(szProductCode, szUserSid, dwContext, szFeature, pdwState)
; szProductCode : LPCSTR -> "str"
; szUserSid : LPCSTR optional -> "str"
; dwContext : MSIINSTALLCONTEXT -> "int"
; szFeature : LPCSTR -> "str"
; pdwState : INSTALLSTATE* optional, out -> "int"

; DWORD MsiQueryFeatureStateExA(LPCSTR szProductCode, LPCSTR szUserSid, MSIINSTALLCONTEXT dwContext, LPCSTR szFeature, INSTALLSTATE* pdwState)
#uselib "msi.dll"
#cfunc global MsiQueryFeatureStateExA "MsiQueryFeatureStateExA" str, str, int, str, int
; res = MsiQueryFeatureStateExA(szProductCode, szUserSid, dwContext, szFeature, pdwState)
; szProductCode : LPCSTR -> "str"
; szUserSid : LPCSTR optional -> "str"
; dwContext : MSIINSTALLCONTEXT -> "int"
; szFeature : LPCSTR -> "str"
; pdwState : INSTALLSTATE* optional, out -> "int"

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

var (
	msi = windows.NewLazySystemDLL("msi.dll")
	procMsiQueryFeatureStateExA = msi.NewProc("MsiQueryFeatureStateExA")
)

// szProductCode (LPCSTR), szUserSid (LPCSTR optional), dwContext (MSIINSTALLCONTEXT), szFeature (LPCSTR), pdwState (INSTALLSTATE* optional, out)
r1, _, err := procMsiQueryFeatureStateExA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szProductCode))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szUserSid))),
	uintptr(dwContext),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szFeature))),
	uintptr(pdwState),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function MsiQueryFeatureStateExA(
  szProductCode: PAnsiChar;   // LPCSTR
  szUserSid: PAnsiChar;   // LPCSTR optional
  dwContext: Integer;   // MSIINSTALLCONTEXT
  szFeature: PAnsiChar;   // LPCSTR
  pdwState: Pointer   // INSTALLSTATE* optional, out
): DWORD; stdcall;
  external 'msi.dll' name 'MsiQueryFeatureStateExA';

result := DllCall("msi\MsiQueryFeatureStateExA"
    , "AStr", szProductCode   ; LPCSTR
    , "AStr", szUserSid   ; LPCSTR optional
    , "Int", dwContext   ; MSIINSTALLCONTEXT
    , "AStr", szFeature   ; LPCSTR
    , "Ptr", pdwState   ; INSTALLSTATE* optional, out
    , "UInt")   ; return: DWORD

●MsiQueryFeatureStateExA(szProductCode, szUserSid, dwContext, szFeature, pdwState) = DLL("msi.dll", "dword MsiQueryFeatureStateExA(char*, char*, int, char*, void*)")
# 呼び出し: MsiQueryFeatureStateExA(szProductCode, szUserSid, dwContext, szFeature, pdwState)
# szProductCode : LPCSTR -> "char*"
# szUserSid : LPCSTR optional -> "char*"
# dwContext : MSIINSTALLCONTEXT -> "int"
# szFeature : LPCSTR -> "char*"
# pdwState : INSTALLSTATE* 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)。