GdipGetImageBounds

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

Status GdipGetImageBounds(
    GpImage* image,
    RectF* srcRect,
    Unit* srcUnit
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipGetImageBounds(
    image As IntPtr,   ' GpImage* in/out
    srcRect As IntPtr,   ' RectF* in/out
    ByRef srcUnit As Integer   ' Unit* in/out
) As Integer
End Function

' image : GpImage* in/out
' srcRect : RectF* in/out
' srcUnit : Unit* in/out
Declare PtrSafe Function GdipGetImageBounds Lib "gdiplus" ( _
    ByVal image As LongPtr, _
    ByVal srcRect As LongPtr, _
    ByRef srcUnit 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

GdipGetImageBounds = ctypes.windll.gdiplus.GdipGetImageBounds
GdipGetImageBounds.restype = ctypes.c_int
GdipGetImageBounds.argtypes = [
    ctypes.c_void_p,  # image : GpImage* in/out
    ctypes.c_void_p,  # srcRect : RectF* in/out
    ctypes.c_void_p,  # srcUnit : Unit* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipGetImageBounds = Fiddle::Function.new(
  lib['GdipGetImageBounds'],
  [
    Fiddle::TYPE_VOIDP,  # image : GpImage* in/out
    Fiddle::TYPE_VOIDP,  # srcRect : RectF* in/out
    Fiddle::TYPE_VOIDP,  # srcUnit : Unit* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipGetImageBounds(
        image: *mut GpImage,  // GpImage* in/out
        srcRect: *mut RectF,  // RectF* in/out
        srcUnit: *mut i32  // Unit* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipGetImageBounds(IntPtr image, IntPtr srcRect, ref int srcUnit);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipGetImageBounds' -Namespace Win32 -PassThru
# $api::GdipGetImageBounds(image, srcRect, srcUnit)

#uselib "gdiplus.dll"
#func global GdipGetImageBounds "GdipGetImageBounds" sptr, sptr, sptr
; GdipGetImageBounds varptr(image), varptr(srcRect), srcUnit   ; 戻り値は stat
; image : GpImage* in/out -> "sptr"
; srcRect : RectF* in/out -> "sptr"
; srcUnit : Unit* 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 GdipGetImageBounds "GdipGetImageBounds" var, var, int
; res = GdipGetImageBounds(image, srcRect, srcUnit)
; image : GpImage* in/out -> "var"
; srcRect : RectF* in/out -> "var"
; srcUnit : Unit* in/out -> "int"
; ※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 GdipGetImageBounds(GpImage* image, RectF* srcRect, Unit* srcUnit)
#uselib "gdiplus.dll"
#cfunc global GdipGetImageBounds "GdipGetImageBounds" var, var, int
; res = GdipGetImageBounds(image, srcRect, srcUnit)
; image : GpImage* in/out -> "var"
; srcRect : RectF* in/out -> "var"
; srcUnit : Unit* in/out -> "int"
; ※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")
	procGdipGetImageBounds = gdiplus.NewProc("GdipGetImageBounds")
)

// image (GpImage* in/out), srcRect (RectF* in/out), srcUnit (Unit* in/out)
r1, _, err := procGdipGetImageBounds.Call(
	uintptr(image),
	uintptr(srcRect),
	uintptr(srcUnit),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipGetImageBounds(
  image: Pointer;   // GpImage* in/out
  srcRect: Pointer;   // RectF* in/out
  srcUnit: Pointer   // Unit* in/out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipGetImageBounds';

result := DllCall("gdiplus\GdipGetImageBounds"
    , "Ptr", image   ; GpImage* in/out
    , "Ptr", srcRect   ; RectF* in/out
    , "Ptr", srcUnit   ; Unit* in/out
    , "Int")   ; return: Status

●GdipGetImageBounds(image, srcRect, srcUnit) = DLL("gdiplus.dll", "int GdipGetImageBounds(void*, void*, void*)")
# 呼び出し: GdipGetImageBounds(image, srcRect, srcUnit)
# image : GpImage* in/out -> "void*"
# srcRect : RectF* in/out -> "void*"
# srcUnit : Unit* 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)。