ICDecompress

// MSVFW32.dll
#include <windows.h>

DWORD ICDecompress(
    HIC hic,
    DWORD dwFlags,
    BITMAPINFOHEADER* lpbiFormat,
    void* lpData,
    BITMAPINFOHEADER* lpbi,
    void* lpBits
);

<DllImport("MSVFW32.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function ICDecompress(
    hic As IntPtr,   ' HIC
    dwFlags As UInteger,   ' DWORD
    lpbiFormat As IntPtr,   ' BITMAPINFOHEADER*
    lpData As IntPtr,   ' void*
    lpbi As IntPtr,   ' BITMAPINFOHEADER*
    lpBits As IntPtr   ' void* out
) As UInteger
End Function

' hic : HIC
' dwFlags : DWORD
' lpbiFormat : BITMAPINFOHEADER*
' lpData : void*
' lpbi : BITMAPINFOHEADER*
' lpBits : void* out
Declare PtrSafe Function ICDecompress Lib "msvfw32" ( _
    ByVal hic As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal lpbiFormat As LongPtr, _
    ByVal lpData As LongPtr, _
    ByVal lpbi As LongPtr, _
    ByVal lpBits 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

ICDecompress = ctypes.cdll.msvfw32.ICDecompress
ICDecompress.restype = wintypes.DWORD
ICDecompress.argtypes = [
    wintypes.HANDLE,  # hic : HIC
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.c_void_p,  # lpbiFormat : BITMAPINFOHEADER*
    ctypes.POINTER(None),  # lpData : void*
    ctypes.c_void_p,  # lpbi : BITMAPINFOHEADER*
    ctypes.POINTER(None),  # lpBits : void* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MSVFW32.dll')
ICDecompress = Fiddle::Function.new(
  lib['ICDecompress'],
  [
    Fiddle::TYPE_VOIDP,  # hic : HIC
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # lpbiFormat : BITMAPINFOHEADER*
    Fiddle::TYPE_VOIDP,  # lpData : void*
    Fiddle::TYPE_VOIDP,  # lpbi : BITMAPINFOHEADER*
    Fiddle::TYPE_VOIDP,  # lpBits : void* out
  ],
  -Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "msvfw32")]
extern "C" {
    fn ICDecompress(
        hic: *mut core::ffi::c_void,  // HIC
        dwFlags: u32,  // DWORD
        lpbiFormat: *mut BITMAPINFOHEADER,  // BITMAPINFOHEADER*
        lpData: *mut (),  // void*
        lpbi: *mut BITMAPINFOHEADER,  // BITMAPINFOHEADER*
        lpBits: *mut ()  // void* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MSVFW32.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern uint ICDecompress(IntPtr hic, uint dwFlags, IntPtr lpbiFormat, IntPtr lpData, IntPtr lpbi, IntPtr lpBits);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MSVFW32_ICDecompress' -Namespace Win32 -PassThru
# $api::ICDecompress(hic, dwFlags, lpbiFormat, lpData, lpbi, lpBits)

#uselib "MSVFW32.dll"
#func global ICDecompress "ICDecompress" sptr, sptr, sptr, sptr, sptr, sptr
; ICDecompress hic, dwFlags, varptr(lpbiFormat), lpData, varptr(lpbi), lpBits   ; 戻り値は stat
; hic : HIC -> "sptr"
; dwFlags : DWORD -> "sptr"
; lpbiFormat : BITMAPINFOHEADER* -> "sptr"
; lpData : void* -> "sptr"
; lpbi : BITMAPINFOHEADER* -> "sptr"
; lpBits : void* 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 "MSVFW32.dll"
#cfunc global ICDecompress "ICDecompress" sptr, int, var, sptr, var, sptr
; res = ICDecompress(hic, dwFlags, lpbiFormat, lpData, lpbi, lpBits)
; hic : HIC -> "sptr"
; dwFlags : DWORD -> "int"
; lpbiFormat : BITMAPINFOHEADER* -> "var"
; lpData : void* -> "sptr"
; lpbi : BITMAPINFOHEADER* -> "var"
; lpBits : void* out -> "sptr"
; ※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 ICDecompress(HIC hic, DWORD dwFlags, BITMAPINFOHEADER* lpbiFormat, void* lpData, BITMAPINFOHEADER* lpbi, void* lpBits)
#uselib "MSVFW32.dll"
#cfunc global ICDecompress "ICDecompress" intptr, int, var, intptr, var, intptr
; res = ICDecompress(hic, dwFlags, lpbiFormat, lpData, lpbi, lpBits)
; hic : HIC -> "intptr"
; dwFlags : DWORD -> "int"
; lpbiFormat : BITMAPINFOHEADER* -> "var"
; lpData : void* -> "intptr"
; lpbi : BITMAPINFOHEADER* -> "var"
; lpBits : void* out -> "intptr"
; ※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 (
	msvfw32 = windows.NewLazySystemDLL("MSVFW32.dll")
	procICDecompress = msvfw32.NewProc("ICDecompress")
)

// hic (HIC), dwFlags (DWORD), lpbiFormat (BITMAPINFOHEADER*), lpData (void*), lpbi (BITMAPINFOHEADER*), lpBits (void* out)
r1, _, err := procICDecompress.Call(
	uintptr(hic),
	uintptr(dwFlags),
	uintptr(lpbiFormat),
	uintptr(lpData),
	uintptr(lpbi),
	uintptr(lpBits),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function ICDecompress(
  hic: THandle;   // HIC
  dwFlags: DWORD;   // DWORD
  lpbiFormat: Pointer;   // BITMAPINFOHEADER*
  lpData: Pointer;   // void*
  lpbi: Pointer;   // BITMAPINFOHEADER*
  lpBits: Pointer   // void* out
): DWORD; cdecl;
  external 'MSVFW32.dll' name 'ICDecompress';

result := DllCall("MSVFW32\ICDecompress"
    , "Ptr", hic   ; HIC
    , "UInt", dwFlags   ; DWORD
    , "Ptr", lpbiFormat   ; BITMAPINFOHEADER*
    , "Ptr", lpData   ; void*
    , "Ptr", lpbi   ; BITMAPINFOHEADER*
    , "Ptr", lpBits   ; void* out
    , "Cdecl UInt")   ; return: DWORD

●ICDecompress(hic, dwFlags, lpbiFormat, lpData, lpbi, lpBits) = DLL("MSVFW32.dll", "dword ICDecompress(void*, dword, void*, void*, void*, void*)")
# 呼び出し: ICDecompress(hic, dwFlags, lpbiFormat, lpData, lpbi, lpBits)
# hic : HIC -> "void*"
# dwFlags : DWORD -> "dword"
# lpbiFormat : BITMAPINFOHEADER* -> "void*"
# lpData : void* -> "void*"
# lpbi : BITMAPINFOHEADER* -> "void*"
# lpBits : void* 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)。
# ※cdecl関数。DLL()宣言はstdcall前提。cdeclは EXEC_PTR(`cdecl`,…) を使用。