CopyImage

// USER32.dll
#include <windows.h>

HANDLE CopyImage(
    HANDLE h,
    GDI_IMAGE_TYPE type,
    INT cx,
    INT cy,
    IMAGE_FLAGS flags
);

<DllImport("USER32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CopyImage(
    h As IntPtr,   ' HANDLE
    type As UInteger,   ' GDI_IMAGE_TYPE
    cx As Integer,   ' INT
    cy As Integer,   ' INT
    flags As UInteger   ' IMAGE_FLAGS
) As IntPtr
End Function

' h : HANDLE
' type : GDI_IMAGE_TYPE
' cx : INT
' cy : INT
' flags : IMAGE_FLAGS
Declare PtrSafe Function CopyImage Lib "user32" ( _
    ByVal h As LongPtr, _
    ByVal type As Long, _
    ByVal cx As Long, _
    ByVal cy As Long, _
    ByVal flags As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CopyImage = ctypes.windll.user32.CopyImage
CopyImage.restype = ctypes.c_void_p
CopyImage.argtypes = [
    wintypes.HANDLE,  # h : HANDLE
    wintypes.DWORD,  # type : GDI_IMAGE_TYPE
    ctypes.c_int,  # cx : INT
    ctypes.c_int,  # cy : INT
    wintypes.DWORD,  # flags : IMAGE_FLAGS
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
CopyImage = Fiddle::Function.new(
  lib['CopyImage'],
  [
    Fiddle::TYPE_VOIDP,  # h : HANDLE
    -Fiddle::TYPE_INT,  # type : GDI_IMAGE_TYPE
    Fiddle::TYPE_INT,  # cx : INT
    Fiddle::TYPE_INT,  # cy : INT
    -Fiddle::TYPE_INT,  # flags : IMAGE_FLAGS
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "user32")]
extern "system" {
    fn CopyImage(
        h: *mut core::ffi::c_void,  // HANDLE
        type: u32,  // GDI_IMAGE_TYPE
        cx: i32,  // INT
        cy: i32,  // INT
        flags: u32  // IMAGE_FLAGS
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll", SetLastError = true)]
public static extern IntPtr CopyImage(IntPtr h, uint type, int cx, int cy, uint flags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_CopyImage' -Namespace Win32 -PassThru
# $api::CopyImage(h, type, cx, cy, flags)

#uselib "USER32.dll"
#func global CopyImage "CopyImage" sptr, sptr, sptr, sptr, sptr
; CopyImage h, type, cx, cy, flags   ; 戻り値は stat
; h : HANDLE -> "sptr"
; type : GDI_IMAGE_TYPE -> "sptr"
; cx : INT -> "sptr"
; cy : INT -> "sptr"
; flags : IMAGE_FLAGS -> "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 "USER32.dll"
#cfunc global CopyImage "CopyImage" sptr, int, int, int, int
; res = CopyImage(h, type, cx, cy, flags)
; h : HANDLE -> "sptr"
; type : GDI_IMAGE_TYPE -> "int"
; cx : INT -> "int"
; cy : INT -> "int"
; flags : IMAGE_FLAGS -> "int"

; HANDLE CopyImage(HANDLE h, GDI_IMAGE_TYPE type, INT cx, INT cy, IMAGE_FLAGS flags)
#uselib "USER32.dll"
#cfunc global CopyImage "CopyImage" intptr, int, int, int, int
; res = CopyImage(h, type, cx, cy, flags)
; h : HANDLE -> "intptr"
; type : GDI_IMAGE_TYPE -> "int"
; cx : INT -> "int"
; cy : INT -> "int"
; flags : IMAGE_FLAGS -> "int"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procCopyImage = user32.NewProc("CopyImage")
)

// h (HANDLE), type (GDI_IMAGE_TYPE), cx (INT), cy (INT), flags (IMAGE_FLAGS)
r1, _, err := procCopyImage.Call(
	uintptr(h),
	uintptr(type),
	uintptr(cx),
	uintptr(cy),
	uintptr(flags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function CopyImage(
  h: THandle;   // HANDLE
  type: DWORD;   // GDI_IMAGE_TYPE
  cx: Integer;   // INT
  cy: Integer;   // INT
  flags: DWORD   // IMAGE_FLAGS
): THandle; stdcall;
  external 'USER32.dll' name 'CopyImage';

result := DllCall("USER32\CopyImage"
    , "Ptr", h   ; HANDLE
    , "UInt", type   ; GDI_IMAGE_TYPE
    , "Int", cx   ; INT
    , "Int", cy   ; INT
    , "UInt", flags   ; IMAGE_FLAGS
    , "Ptr")   ; return: HANDLE

●CopyImage(h, type, cx, cy, flags) = DLL("USER32.dll", "void* CopyImage(void*, dword, int, int, dword)")
# 呼び出し: CopyImage(h, type, cx, cy, flags)
# h : HANDLE -> "void*"
# type : GDI_IMAGE_TYPE -> "dword"
# cx : INT -> "int"
# cy : INT -> "int"
# flags : IMAGE_FLAGS -> "dword"
# 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)。