MsiSourceListEnumSourcesA

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

DWORD MsiSourceListEnumSourcesA(
    LPCSTR szProductCodeOrPatchCode,
    LPCSTR szUserSid,   // optional
    MSIINSTALLCONTEXT dwContext,
    DWORD dwOptions,
    DWORD dwIndex,
    LPSTR szSource,   // optional
    DWORD* pcchSource   // optional
);

<DllImport("msi.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function MsiSourceListEnumSourcesA(
    <MarshalAs(UnmanagedType.LPStr)> szProductCodeOrPatchCode As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> szUserSid As String,   ' LPCSTR optional
    dwContext As Integer,   ' MSIINSTALLCONTEXT
    dwOptions As UInteger,   ' DWORD
    dwIndex As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> szSource As System.Text.StringBuilder,   ' LPSTR optional, out
    pcchSource As IntPtr   ' DWORD* optional, in/out
) As UInteger
End Function

' szProductCodeOrPatchCode : LPCSTR
' szUserSid : LPCSTR optional
' dwContext : MSIINSTALLCONTEXT
' dwOptions : DWORD
' dwIndex : DWORD
' szSource : LPSTR optional, out
' pcchSource : DWORD* optional, in/out
Declare PtrSafe Function MsiSourceListEnumSourcesA Lib "msi" ( _
    ByVal szProductCodeOrPatchCode As String, _
    ByVal szUserSid As String, _
    ByVal dwContext As Long, _
    ByVal dwOptions As Long, _
    ByVal dwIndex As Long, _
    ByVal szSource As String, _
    ByVal pcchSource 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

MsiSourceListEnumSourcesA = ctypes.windll.msi.MsiSourceListEnumSourcesA
MsiSourceListEnumSourcesA.restype = wintypes.DWORD
MsiSourceListEnumSourcesA.argtypes = [
    wintypes.LPCSTR,  # szProductCodeOrPatchCode : LPCSTR
    wintypes.LPCSTR,  # szUserSid : LPCSTR optional
    ctypes.c_int,  # dwContext : MSIINSTALLCONTEXT
    wintypes.DWORD,  # dwOptions : DWORD
    wintypes.DWORD,  # dwIndex : DWORD
    wintypes.LPSTR,  # szSource : LPSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcchSource : DWORD* optional, in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiSourceListEnumSourcesA = Fiddle::Function.new(
  lib['MsiSourceListEnumSourcesA'],
  [
    Fiddle::TYPE_VOIDP,  # szProductCodeOrPatchCode : LPCSTR
    Fiddle::TYPE_VOIDP,  # szUserSid : LPCSTR optional
    Fiddle::TYPE_INT,  # dwContext : MSIINSTALLCONTEXT
    -Fiddle::TYPE_INT,  # dwOptions : DWORD
    -Fiddle::TYPE_INT,  # dwIndex : DWORD
    Fiddle::TYPE_VOIDP,  # szSource : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # pcchSource : DWORD* optional, in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "msi")]
extern "system" {
    fn MsiSourceListEnumSourcesA(
        szProductCodeOrPatchCode: *const u8,  // LPCSTR
        szUserSid: *const u8,  // LPCSTR optional
        dwContext: i32,  // MSIINSTALLCONTEXT
        dwOptions: u32,  // DWORD
        dwIndex: u32,  // DWORD
        szSource: *mut u8,  // LPSTR optional, out
        pcchSource: *mut u32  // DWORD* optional, in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll", CharSet = CharSet.Ansi)]
public static extern uint MsiSourceListEnumSourcesA([MarshalAs(UnmanagedType.LPStr)] string szProductCodeOrPatchCode, [MarshalAs(UnmanagedType.LPStr)] string szUserSid, int dwContext, uint dwOptions, uint dwIndex, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder szSource, IntPtr pcchSource);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiSourceListEnumSourcesA' -Namespace Win32 -PassThru
# $api::MsiSourceListEnumSourcesA(szProductCodeOrPatchCode, szUserSid, dwContext, dwOptions, dwIndex, szSource, pcchSource)

#uselib "msi.dll"
#func global MsiSourceListEnumSourcesA "MsiSourceListEnumSourcesA" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; MsiSourceListEnumSourcesA szProductCodeOrPatchCode, szUserSid, dwContext, dwOptions, dwIndex, varptr(szSource), varptr(pcchSource)   ; 戻り値は stat
; szProductCodeOrPatchCode : LPCSTR -> "sptr"
; szUserSid : LPCSTR optional -> "sptr"
; dwContext : MSIINSTALLCONTEXT -> "sptr"
; dwOptions : DWORD -> "sptr"
; dwIndex : DWORD -> "sptr"
; szSource : LPSTR optional, out -> "sptr"
; pcchSource : DWORD* optional, in/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 MsiSourceListEnumSourcesA "MsiSourceListEnumSourcesA" str, str, int, int, int, var, var
; res = MsiSourceListEnumSourcesA(szProductCodeOrPatchCode, szUserSid, dwContext, dwOptions, dwIndex, szSource, pcchSource)
; szProductCodeOrPatchCode : LPCSTR -> "str"
; szUserSid : LPCSTR optional -> "str"
; dwContext : MSIINSTALLCONTEXT -> "int"
; dwOptions : DWORD -> "int"
; dwIndex : DWORD -> "int"
; szSource : LPSTR optional, out -> "var"
; pcchSource : DWORD* optional, in/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。

; DWORD MsiSourceListEnumSourcesA(LPCSTR szProductCodeOrPatchCode, LPCSTR szUserSid, MSIINSTALLCONTEXT dwContext, DWORD dwOptions, DWORD dwIndex, LPSTR szSource, DWORD* pcchSource)
#uselib "msi.dll"
#cfunc global MsiSourceListEnumSourcesA "MsiSourceListEnumSourcesA" str, str, int, int, int, var, var
; res = MsiSourceListEnumSourcesA(szProductCodeOrPatchCode, szUserSid, dwContext, dwOptions, dwIndex, szSource, pcchSource)
; szProductCodeOrPatchCode : LPCSTR -> "str"
; szUserSid : LPCSTR optional -> "str"
; dwContext : MSIINSTALLCONTEXT -> "int"
; dwOptions : DWORD -> "int"
; dwIndex : DWORD -> "int"
; szSource : LPSTR optional, out -> "var"
; pcchSource : DWORD* optional, in/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。

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

var (
	msi = windows.NewLazySystemDLL("msi.dll")
	procMsiSourceListEnumSourcesA = msi.NewProc("MsiSourceListEnumSourcesA")
)

// szProductCodeOrPatchCode (LPCSTR), szUserSid (LPCSTR optional), dwContext (MSIINSTALLCONTEXT), dwOptions (DWORD), dwIndex (DWORD), szSource (LPSTR optional, out), pcchSource (DWORD* optional, in/out)
r1, _, err := procMsiSourceListEnumSourcesA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szProductCodeOrPatchCode))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szUserSid))),
	uintptr(dwContext),
	uintptr(dwOptions),
	uintptr(dwIndex),
	uintptr(szSource),
	uintptr(pcchSource),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function MsiSourceListEnumSourcesA(
  szProductCodeOrPatchCode: PAnsiChar;   // LPCSTR
  szUserSid: PAnsiChar;   // LPCSTR optional
  dwContext: Integer;   // MSIINSTALLCONTEXT
  dwOptions: DWORD;   // DWORD
  dwIndex: DWORD;   // DWORD
  szSource: PAnsiChar;   // LPSTR optional, out
  pcchSource: Pointer   // DWORD* optional, in/out
): DWORD; stdcall;
  external 'msi.dll' name 'MsiSourceListEnumSourcesA';

result := DllCall("msi\MsiSourceListEnumSourcesA"
    , "AStr", szProductCodeOrPatchCode   ; LPCSTR
    , "AStr", szUserSid   ; LPCSTR optional
    , "Int", dwContext   ; MSIINSTALLCONTEXT
    , "UInt", dwOptions   ; DWORD
    , "UInt", dwIndex   ; DWORD
    , "Ptr", szSource   ; LPSTR optional, out
    , "Ptr", pcchSource   ; DWORD* optional, in/out
    , "UInt")   ; return: DWORD

●MsiSourceListEnumSourcesA(szProductCodeOrPatchCode, szUserSid, dwContext, dwOptions, dwIndex, szSource, pcchSource) = DLL("msi.dll", "dword MsiSourceListEnumSourcesA(char*, char*, int, dword, dword, char*, void*)")
# 呼び出し: MsiSourceListEnumSourcesA(szProductCodeOrPatchCode, szUserSid, dwContext, dwOptions, dwIndex, szSource, pcchSource)
# szProductCodeOrPatchCode : LPCSTR -> "char*"
# szUserSid : LPCSTR optional -> "char*"
# dwContext : MSIINSTALLCONTEXT -> "int"
# dwOptions : DWORD -> "dword"
# dwIndex : DWORD -> "dword"
# szSource : LPSTR optional, out -> "char*"
# pcchSource : DWORD* optional, in/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)。