CreateCompatibleDC

// GDI32.dll
#include <windows.h>

HDC CreateCompatibleDC(
    HDC hdc   // optional
);

<DllImport("GDI32.dll", ExactSpelling:=True)>
Public Shared Function CreateCompatibleDC(
    hdc As IntPtr   ' HDC optional
) As IntPtr
End Function

' hdc : HDC optional
Declare PtrSafe Function CreateCompatibleDC Lib "gdi32" ( _
    ByVal hdc 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

CreateCompatibleDC = ctypes.windll.gdi32.CreateCompatibleDC
CreateCompatibleDC.restype = ctypes.c_void_p
CreateCompatibleDC.argtypes = [
    wintypes.HANDLE,  # hdc : HDC optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('GDI32.dll')
CreateCompatibleDC = Fiddle::Function.new(
  lib['CreateCompatibleDC'],
  [
    Fiddle::TYPE_VOIDP,  # hdc : HDC optional
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "gdi32")]
extern "system" {
    fn CreateCompatibleDC(
        hdc: *mut core::ffi::c_void  // HDC optional
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("GDI32.dll")]
public static extern IntPtr CreateCompatibleDC(IntPtr hdc);
"@
$api = Add-Type -MemberDefinition $sig -Name 'GDI32_CreateCompatibleDC' -Namespace Win32 -PassThru
# $api::CreateCompatibleDC(hdc)

#uselib "GDI32.dll"
#func global CreateCompatibleDC "CreateCompatibleDC" sptr
; CreateCompatibleDC hdc   ; 戻り値は stat
; hdc : HDC optional -> "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 "GDI32.dll"
#cfunc global CreateCompatibleDC "CreateCompatibleDC" sptr
; res = CreateCompatibleDC(hdc)
; hdc : HDC optional -> "sptr"

; HDC CreateCompatibleDC(HDC hdc)
#uselib "GDI32.dll"
#cfunc global CreateCompatibleDC "CreateCompatibleDC" intptr
; res = CreateCompatibleDC(hdc)
; hdc : HDC optional -> "intptr"

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

var (
	gdi32 = windows.NewLazySystemDLL("GDI32.dll")
	procCreateCompatibleDC = gdi32.NewProc("CreateCompatibleDC")
)

// hdc (HDC optional)
r1, _, err := procCreateCompatibleDC.Call(
	uintptr(hdc),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HDC

function CreateCompatibleDC(
  hdc: THandle   // HDC optional
): THandle; stdcall;
  external 'GDI32.dll' name 'CreateCompatibleDC';

result := DllCall("GDI32\CreateCompatibleDC"
    , "Ptr", hdc   ; HDC optional
    , "Ptr")   ; return: HDC

●CreateCompatibleDC(hdc) = DLL("GDI32.dll", "void* CreateCompatibleDC(void*)")
# 呼び出し: CreateCompatibleDC(hdc)
# hdc : HDC optional -> "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)。