MsiEnumComponentCostsA

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

DWORD MsiEnumComponentCostsA(
    MSIHANDLE hInstall,
    LPCSTR szComponent,
    DWORD dwIndex,
    INSTALLSTATE iState,
    LPSTR szDriveBuf,
    DWORD* pcchDriveBuf,
    INT* piCost,
    INT* piTempCost
);

<DllImport("msi.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function MsiEnumComponentCostsA(
    hInstall As UInteger,   ' MSIHANDLE
    <MarshalAs(UnmanagedType.LPStr)> szComponent As String,   ' LPCSTR
    dwIndex As UInteger,   ' DWORD
    iState As Integer,   ' INSTALLSTATE
    <MarshalAs(UnmanagedType.LPStr)> szDriveBuf As System.Text.StringBuilder,   ' LPSTR out
    ByRef pcchDriveBuf As UInteger,   ' DWORD* in/out
    <Out> ByRef piCost As Integer,   ' INT* out
    <Out> ByRef piTempCost As Integer   ' INT* out
) As UInteger
End Function

' hInstall : MSIHANDLE
' szComponent : LPCSTR
' dwIndex : DWORD
' iState : INSTALLSTATE
' szDriveBuf : LPSTR out
' pcchDriveBuf : DWORD* in/out
' piCost : INT* out
' piTempCost : INT* out
Declare PtrSafe Function MsiEnumComponentCostsA Lib "msi" ( _
    ByVal hInstall As Long, _
    ByVal szComponent As String, _
    ByVal dwIndex As Long, _
    ByVal iState As Long, _
    ByVal szDriveBuf As String, _
    ByRef pcchDriveBuf As Long, _
    ByRef piCost As Long, _
    ByRef piTempCost As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

MsiEnumComponentCostsA = ctypes.windll.msi.MsiEnumComponentCostsA
MsiEnumComponentCostsA.restype = wintypes.DWORD
MsiEnumComponentCostsA.argtypes = [
    wintypes.DWORD,  # hInstall : MSIHANDLE
    wintypes.LPCSTR,  # szComponent : LPCSTR
    wintypes.DWORD,  # dwIndex : DWORD
    ctypes.c_int,  # iState : INSTALLSTATE
    wintypes.LPSTR,  # szDriveBuf : LPSTR out
    ctypes.POINTER(wintypes.DWORD),  # pcchDriveBuf : DWORD* in/out
    ctypes.POINTER(ctypes.c_int),  # piCost : INT* out
    ctypes.POINTER(ctypes.c_int),  # piTempCost : INT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiEnumComponentCostsA = Fiddle::Function.new(
  lib['MsiEnumComponentCostsA'],
  [
    -Fiddle::TYPE_INT,  # hInstall : MSIHANDLE
    Fiddle::TYPE_VOIDP,  # szComponent : LPCSTR
    -Fiddle::TYPE_INT,  # dwIndex : DWORD
    Fiddle::TYPE_INT,  # iState : INSTALLSTATE
    Fiddle::TYPE_VOIDP,  # szDriveBuf : LPSTR out
    Fiddle::TYPE_VOIDP,  # pcchDriveBuf : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # piCost : INT* out
    Fiddle::TYPE_VOIDP,  # piTempCost : INT* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "msi")]
extern "system" {
    fn MsiEnumComponentCostsA(
        hInstall: u32,  // MSIHANDLE
        szComponent: *const u8,  // LPCSTR
        dwIndex: u32,  // DWORD
        iState: i32,  // INSTALLSTATE
        szDriveBuf: *mut u8,  // LPSTR out
        pcchDriveBuf: *mut u32,  // DWORD* in/out
        piCost: *mut i32,  // INT* out
        piTempCost: *mut i32  // INT* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll", CharSet = CharSet.Ansi)]
public static extern uint MsiEnumComponentCostsA(uint hInstall, [MarshalAs(UnmanagedType.LPStr)] string szComponent, uint dwIndex, int iState, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder szDriveBuf, ref uint pcchDriveBuf, out int piCost, out int piTempCost);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiEnumComponentCostsA' -Namespace Win32 -PassThru
# $api::MsiEnumComponentCostsA(hInstall, szComponent, dwIndex, iState, szDriveBuf, pcchDriveBuf, piCost, piTempCost)

#uselib "msi.dll"
#func global MsiEnumComponentCostsA "MsiEnumComponentCostsA" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; MsiEnumComponentCostsA hInstall, szComponent, dwIndex, iState, varptr(szDriveBuf), varptr(pcchDriveBuf), varptr(piCost), varptr(piTempCost)   ; 戻り値は stat
; hInstall : MSIHANDLE -> "sptr"
; szComponent : LPCSTR -> "sptr"
; dwIndex : DWORD -> "sptr"
; iState : INSTALLSTATE -> "sptr"
; szDriveBuf : LPSTR out -> "sptr"
; pcchDriveBuf : DWORD* in/out -> "sptr"
; piCost : INT* out -> "sptr"
; piTempCost : INT* 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 MsiEnumComponentCostsA "MsiEnumComponentCostsA" int, str, int, int, var, var, var, var
; res = MsiEnumComponentCostsA(hInstall, szComponent, dwIndex, iState, szDriveBuf, pcchDriveBuf, piCost, piTempCost)
; hInstall : MSIHANDLE -> "int"
; szComponent : LPCSTR -> "str"
; dwIndex : DWORD -> "int"
; iState : INSTALLSTATE -> "int"
; szDriveBuf : LPSTR out -> "var"
; pcchDriveBuf : DWORD* in/out -> "var"
; piCost : INT* out -> "var"
; piTempCost : INT* 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 MsiEnumComponentCostsA(MSIHANDLE hInstall, LPCSTR szComponent, DWORD dwIndex, INSTALLSTATE iState, LPSTR szDriveBuf, DWORD* pcchDriveBuf, INT* piCost, INT* piTempCost)
#uselib "msi.dll"
#cfunc global MsiEnumComponentCostsA "MsiEnumComponentCostsA" int, str, int, int, var, var, var, var
; res = MsiEnumComponentCostsA(hInstall, szComponent, dwIndex, iState, szDriveBuf, pcchDriveBuf, piCost, piTempCost)
; hInstall : MSIHANDLE -> "int"
; szComponent : LPCSTR -> "str"
; dwIndex : DWORD -> "int"
; iState : INSTALLSTATE -> "int"
; szDriveBuf : LPSTR out -> "var"
; pcchDriveBuf : DWORD* in/out -> "var"
; piCost : INT* out -> "var"
; piTempCost : INT* 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")
	procMsiEnumComponentCostsA = msi.NewProc("MsiEnumComponentCostsA")
)

// hInstall (MSIHANDLE), szComponent (LPCSTR), dwIndex (DWORD), iState (INSTALLSTATE), szDriveBuf (LPSTR out), pcchDriveBuf (DWORD* in/out), piCost (INT* out), piTempCost (INT* out)
r1, _, err := procMsiEnumComponentCostsA.Call(
	uintptr(hInstall),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szComponent))),
	uintptr(dwIndex),
	uintptr(iState),
	uintptr(szDriveBuf),
	uintptr(pcchDriveBuf),
	uintptr(piCost),
	uintptr(piTempCost),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function MsiEnumComponentCostsA(
  hInstall: DWORD;   // MSIHANDLE
  szComponent: PAnsiChar;   // LPCSTR
  dwIndex: DWORD;   // DWORD
  iState: Integer;   // INSTALLSTATE
  szDriveBuf: PAnsiChar;   // LPSTR out
  pcchDriveBuf: Pointer;   // DWORD* in/out
  piCost: Pointer;   // INT* out
  piTempCost: Pointer   // INT* out
): DWORD; stdcall;
  external 'msi.dll' name 'MsiEnumComponentCostsA';

result := DllCall("msi\MsiEnumComponentCostsA"
    , "UInt", hInstall   ; MSIHANDLE
    , "AStr", szComponent   ; LPCSTR
    , "UInt", dwIndex   ; DWORD
    , "Int", iState   ; INSTALLSTATE
    , "Ptr", szDriveBuf   ; LPSTR out
    , "Ptr", pcchDriveBuf   ; DWORD* in/out
    , "Ptr", piCost   ; INT* out
    , "Ptr", piTempCost   ; INT* out
    , "UInt")   ; return: DWORD

●MsiEnumComponentCostsA(hInstall, szComponent, dwIndex, iState, szDriveBuf, pcchDriveBuf, piCost, piTempCost) = DLL("msi.dll", "dword MsiEnumComponentCostsA(dword, char*, dword, int, char*, void*, void*, void*)")
# 呼び出し: MsiEnumComponentCostsA(hInstall, szComponent, dwIndex, iState, szDriveBuf, pcchDriveBuf, piCost, piTempCost)
# hInstall : MSIHANDLE -> "dword"
# szComponent : LPCSTR -> "char*"
# dwIndex : DWORD -> "dword"
# iState : INSTALLSTATE -> "int"
# szDriveBuf : LPSTR out -> "char*"
# pcchDriveBuf : DWORD* in/out -> "void*"
# piCost : INT* out -> "void*"
# piTempCost : INT* 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)。