DCIOpenProvider

// DCIMAN32.dll
#include <windows.h>

HDC DCIOpenProvider(void);

<DllImport("DCIMAN32.dll", ExactSpelling:=True)>
Public Shared Function DCIOpenProvider() As IntPtr
End Function

Declare PtrSafe Function DCIOpenProvider Lib "dciman32" () As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DCIOpenProvider = ctypes.windll.dciman32.DCIOpenProvider
DCIOpenProvider.restype = ctypes.c_void_p
DCIOpenProvider.argtypes = []

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DCIMAN32.dll')
DCIOpenProvider = Fiddle::Function.new(
  lib['DCIOpenProvider'],
  [],
  Fiddle::TYPE_VOIDP)

#[link(name = "dciman32")]
extern "system" {
    fn DCIOpenProvider() -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("DCIMAN32.dll")]
public static extern IntPtr DCIOpenProvider();
"@
$api = Add-Type -MemberDefinition $sig -Name 'DCIMAN32_DCIOpenProvider' -Namespace Win32 -PassThru
# $api::DCIOpenProvider()

#uselib "DCIMAN32.dll"
#func global DCIOpenProvider "DCIOpenProvider"
; DCIOpenProvider   ; 戻り値は stat
; ※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 "DCIMAN32.dll"
#cfunc global DCIOpenProvider "DCIOpenProvider"
; res = DCIOpenProvider()

; HDC DCIOpenProvider()
#uselib "DCIMAN32.dll"
#cfunc global DCIOpenProvider "DCIOpenProvider"
; res = DCIOpenProvider()

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

var (
	dciman32 = windows.NewLazySystemDLL("DCIMAN32.dll")
	procDCIOpenProvider = dciman32.NewProc("DCIOpenProvider")
)

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

function DCIOpenProvider: THandle; stdcall;
  external 'DCIMAN32.dll' name 'DCIOpenProvider';

result := DllCall("DCIMAN32\DCIOpenProvider", "Ptr")

●DCIOpenProvider() = DLL("DCIMAN32.dll", "void* DCIOpenProvider()")
# 呼び出し: DCIOpenProvider()
# 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)。