ICImageCompress

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

HANDLE ICImageCompress(
    HIC hic,
    DWORD uiFlags,
    BITMAPINFO* lpbiIn,
    void* lpBits,
    BITMAPINFO* lpbiOut,   // optional
    INT lQuality,
    INT* plSize   // optional
);

<DllImport("MSVFW32.dll", ExactSpelling:=True)>
Public Shared Function ICImageCompress(
    hic As IntPtr,   ' HIC
    uiFlags As UInteger,   ' DWORD
    lpbiIn As IntPtr,   ' BITMAPINFO*
    lpBits As IntPtr,   ' void*
    lpbiOut As IntPtr,   ' BITMAPINFO* optional
    lQuality As Integer,   ' INT
    plSize As IntPtr   ' INT* optional, in/out
) As IntPtr
End Function

' hic : HIC
' uiFlags : DWORD
' lpbiIn : BITMAPINFO*
' lpBits : void*
' lpbiOut : BITMAPINFO* optional
' lQuality : INT
' plSize : INT* optional, in/out
Declare PtrSafe Function ICImageCompress Lib "msvfw32" ( _
    ByVal hic As LongPtr, _
    ByVal uiFlags As Long, _
    ByVal lpbiIn As LongPtr, _
    ByVal lpBits As LongPtr, _
    ByVal lpbiOut As LongPtr, _
    ByVal lQuality As Long, _
    ByVal plSize As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ICImageCompress = ctypes.windll.msvfw32.ICImageCompress
ICImageCompress.restype = ctypes.c_void_p
ICImageCompress.argtypes = [
    wintypes.HANDLE,  # hic : HIC
    wintypes.DWORD,  # uiFlags : DWORD
    ctypes.c_void_p,  # lpbiIn : BITMAPINFO*
    ctypes.POINTER(None),  # lpBits : void*
    ctypes.c_void_p,  # lpbiOut : BITMAPINFO* optional
    ctypes.c_int,  # lQuality : INT
    ctypes.POINTER(ctypes.c_int),  # plSize : INT* optional, in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MSVFW32.dll')
ICImageCompress = Fiddle::Function.new(
  lib['ICImageCompress'],
  [
    Fiddle::TYPE_VOIDP,  # hic : HIC
    -Fiddle::TYPE_INT,  # uiFlags : DWORD
    Fiddle::TYPE_VOIDP,  # lpbiIn : BITMAPINFO*
    Fiddle::TYPE_VOIDP,  # lpBits : void*
    Fiddle::TYPE_VOIDP,  # lpbiOut : BITMAPINFO* optional
    Fiddle::TYPE_INT,  # lQuality : INT
    Fiddle::TYPE_VOIDP,  # plSize : INT* optional, in/out
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "msvfw32")]
extern "system" {
    fn ICImageCompress(
        hic: *mut core::ffi::c_void,  // HIC
        uiFlags: u32,  // DWORD
        lpbiIn: *mut BITMAPINFO,  // BITMAPINFO*
        lpBits: *mut (),  // void*
        lpbiOut: *mut BITMAPINFO,  // BITMAPINFO* optional
        lQuality: i32,  // INT
        plSize: *mut i32  // INT* optional, in/out
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MSVFW32.dll")]
public static extern IntPtr ICImageCompress(IntPtr hic, uint uiFlags, IntPtr lpbiIn, IntPtr lpBits, IntPtr lpbiOut, int lQuality, IntPtr plSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MSVFW32_ICImageCompress' -Namespace Win32 -PassThru
# $api::ICImageCompress(hic, uiFlags, lpbiIn, lpBits, lpbiOut, lQuality, plSize)

#uselib "MSVFW32.dll"
#func global ICImageCompress "ICImageCompress" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; ICImageCompress hic, uiFlags, varptr(lpbiIn), lpBits, varptr(lpbiOut), lQuality, varptr(plSize)   ; 戻り値は stat
; hic : HIC -> "sptr"
; uiFlags : DWORD -> "sptr"
; lpbiIn : BITMAPINFO* -> "sptr"
; lpBits : void* -> "sptr"
; lpbiOut : BITMAPINFO* optional -> "sptr"
; lQuality : INT -> "sptr"
; plSize : INT* 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 "MSVFW32.dll"
#cfunc global ICImageCompress "ICImageCompress" sptr, int, var, sptr, var, int, var
; res = ICImageCompress(hic, uiFlags, lpbiIn, lpBits, lpbiOut, lQuality, plSize)
; hic : HIC -> "sptr"
; uiFlags : DWORD -> "int"
; lpbiIn : BITMAPINFO* -> "var"
; lpBits : void* -> "sptr"
; lpbiOut : BITMAPINFO* optional -> "var"
; lQuality : INT -> "int"
; plSize : INT* 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。

; HANDLE ICImageCompress(HIC hic, DWORD uiFlags, BITMAPINFO* lpbiIn, void* lpBits, BITMAPINFO* lpbiOut, INT lQuality, INT* plSize)
#uselib "MSVFW32.dll"
#cfunc global ICImageCompress "ICImageCompress" intptr, int, var, intptr, var, int, var
; res = ICImageCompress(hic, uiFlags, lpbiIn, lpBits, lpbiOut, lQuality, plSize)
; hic : HIC -> "intptr"
; uiFlags : DWORD -> "int"
; lpbiIn : BITMAPINFO* -> "var"
; lpBits : void* -> "intptr"
; lpbiOut : BITMAPINFO* optional -> "var"
; lQuality : INT -> "int"
; plSize : INT* 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 (
	msvfw32 = windows.NewLazySystemDLL("MSVFW32.dll")
	procICImageCompress = msvfw32.NewProc("ICImageCompress")
)

// hic (HIC), uiFlags (DWORD), lpbiIn (BITMAPINFO*), lpBits (void*), lpbiOut (BITMAPINFO* optional), lQuality (INT), plSize (INT* optional, in/out)
r1, _, err := procICImageCompress.Call(
	uintptr(hic),
	uintptr(uiFlags),
	uintptr(lpbiIn),
	uintptr(lpBits),
	uintptr(lpbiOut),
	uintptr(lQuality),
	uintptr(plSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function ICImageCompress(
  hic: THandle;   // HIC
  uiFlags: DWORD;   // DWORD
  lpbiIn: Pointer;   // BITMAPINFO*
  lpBits: Pointer;   // void*
  lpbiOut: Pointer;   // BITMAPINFO* optional
  lQuality: Integer;   // INT
  plSize: Pointer   // INT* optional, in/out
): THandle; stdcall;
  external 'MSVFW32.dll' name 'ICImageCompress';

result := DllCall("MSVFW32\ICImageCompress"
    , "Ptr", hic   ; HIC
    , "UInt", uiFlags   ; DWORD
    , "Ptr", lpbiIn   ; BITMAPINFO*
    , "Ptr", lpBits   ; void*
    , "Ptr", lpbiOut   ; BITMAPINFO* optional
    , "Int", lQuality   ; INT
    , "Ptr", plSize   ; INT* optional, in/out
    , "Ptr")   ; return: HANDLE

●ICImageCompress(hic, uiFlags, lpbiIn, lpBits, lpbiOut, lQuality, plSize) = DLL("MSVFW32.dll", "void* ICImageCompress(void*, dword, void*, void*, void*, int, void*)")
# 呼び出し: ICImageCompress(hic, uiFlags, lpbiIn, lpBits, lpbiOut, lQuality, plSize)
# hic : HIC -> "void*"
# uiFlags : DWORD -> "dword"
# lpbiIn : BITMAPINFO* -> "void*"
# lpBits : void* -> "void*"
# lpbiOut : BITMAPINFO* optional -> "void*"
# lQuality : INT -> "int"
# plSize : INT* 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)。