GdipGetEncoderParameterList

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

Status GdipGetEncoderParameterList(
    GpImage* image,
    const GUID* clsidEncoder,
    DWORD size,
    EncoderParameters* buffer
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipGetEncoderParameterList(
    image As IntPtr,   ' GpImage* in/out
    ByRef clsidEncoder As Guid,   ' GUID*
    size As UInteger,   ' DWORD
    buffer As IntPtr   ' EncoderParameters* in/out
) As Integer
End Function

' image : GpImage* in/out
' clsidEncoder : GUID*
' size : DWORD
' buffer : EncoderParameters* in/out
Declare PtrSafe Function GdipGetEncoderParameterList Lib "gdiplus" ( _
    ByVal image As LongPtr, _
    ByVal clsidEncoder As LongPtr, _
    ByVal size As Long, _
    ByVal buffer 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

GdipGetEncoderParameterList = ctypes.windll.gdiplus.GdipGetEncoderParameterList
GdipGetEncoderParameterList.restype = ctypes.c_int
GdipGetEncoderParameterList.argtypes = [
    ctypes.c_void_p,  # image : GpImage* in/out
    ctypes.c_void_p,  # clsidEncoder : GUID*
    wintypes.DWORD,  # size : DWORD
    ctypes.c_void_p,  # buffer : EncoderParameters* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipGetEncoderParameterList = Fiddle::Function.new(
  lib['GdipGetEncoderParameterList'],
  [
    Fiddle::TYPE_VOIDP,  # image : GpImage* in/out
    Fiddle::TYPE_VOIDP,  # clsidEncoder : GUID*
    -Fiddle::TYPE_INT,  # size : DWORD
    Fiddle::TYPE_VOIDP,  # buffer : EncoderParameters* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipGetEncoderParameterList(
        image: *mut GpImage,  // GpImage* in/out
        clsidEncoder: *const GUID,  // GUID*
        size: u32,  // DWORD
        buffer: *mut EncoderParameters  // EncoderParameters* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipGetEncoderParameterList(IntPtr image, ref Guid clsidEncoder, uint size, IntPtr buffer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipGetEncoderParameterList' -Namespace Win32 -PassThru
# $api::GdipGetEncoderParameterList(image, clsidEncoder, size, buffer)

#uselib "gdiplus.dll"
#func global GdipGetEncoderParameterList "GdipGetEncoderParameterList" sptr, sptr, sptr, sptr
; GdipGetEncoderParameterList varptr(image), varptr(clsidEncoder), size, varptr(buffer)   ; 戻り値は stat
; image : GpImage* in/out -> "sptr"
; clsidEncoder : GUID* -> "sptr"
; size : DWORD -> "sptr"
; buffer : EncoderParameters* 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 "gdiplus.dll"
#cfunc global GdipGetEncoderParameterList "GdipGetEncoderParameterList" var, var, int, var
; res = GdipGetEncoderParameterList(image, clsidEncoder, size, buffer)
; image : GpImage* in/out -> "var"
; clsidEncoder : GUID* -> "var"
; size : DWORD -> "int"
; buffer : EncoderParameters* 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。

; Status GdipGetEncoderParameterList(GpImage* image, GUID* clsidEncoder, DWORD size, EncoderParameters* buffer)
#uselib "gdiplus.dll"
#cfunc global GdipGetEncoderParameterList "GdipGetEncoderParameterList" var, var, int, var
; res = GdipGetEncoderParameterList(image, clsidEncoder, size, buffer)
; image : GpImage* in/out -> "var"
; clsidEncoder : GUID* -> "var"
; size : DWORD -> "int"
; buffer : EncoderParameters* 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 (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipGetEncoderParameterList = gdiplus.NewProc("GdipGetEncoderParameterList")
)

// image (GpImage* in/out), clsidEncoder (GUID*), size (DWORD), buffer (EncoderParameters* in/out)
r1, _, err := procGdipGetEncoderParameterList.Call(
	uintptr(image),
	uintptr(clsidEncoder),
	uintptr(size),
	uintptr(buffer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipGetEncoderParameterList(
  image: Pointer;   // GpImage* in/out
  clsidEncoder: PGUID;   // GUID*
  size: DWORD;   // DWORD
  buffer: Pointer   // EncoderParameters* in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipGetEncoderParameterList';

result := DllCall("gdiplus\GdipGetEncoderParameterList"
    , "Ptr", image   ; GpImage* in/out
    , "Ptr", clsidEncoder   ; GUID*
    , "UInt", size   ; DWORD
    , "Ptr", buffer   ; EncoderParameters* in/out
    , "Int")   ; return: Status

●GdipGetEncoderParameterList(image, clsidEncoder, size, buffer) = DLL("gdiplus.dll", "int GdipGetEncoderParameterList(void*, void*, dword, void*)")
# 呼び出し: GdipGetEncoderParameterList(image, clsidEncoder, size, buffer)
# image : GpImage* in/out -> "void*"
# clsidEncoder : GUID* -> "void*"
# size : DWORD -> "dword"
# buffer : EncoderParameters* 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)。