PropVariantToDoubleVector

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

HRESULT PropVariantToDoubleVector(
    const PROPVARIANT* propvar,
    DOUBLE* prgn,
    DWORD crgn,
    DWORD* pcElem
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function PropVariantToDoubleVector(
    propvar As IntPtr,   ' PROPVARIANT*
    <Out> ByRef prgn As Double,   ' DOUBLE* out
    crgn As UInteger,   ' DWORD
    <Out> ByRef pcElem As UInteger   ' DWORD* out
) As Integer
End Function

' propvar : PROPVARIANT*
' prgn : DOUBLE* out
' crgn : DWORD
' pcElem : DWORD* out
Declare PtrSafe Function PropVariantToDoubleVector Lib "propsys" ( _
    ByVal propvar As LongPtr, _
    ByRef prgn As Double, _
    ByVal crgn As Long, _
    ByRef pcElem 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

PropVariantToDoubleVector = ctypes.windll.propsys.PropVariantToDoubleVector
PropVariantToDoubleVector.restype = ctypes.c_int
PropVariantToDoubleVector.argtypes = [
    ctypes.c_void_p,  # propvar : PROPVARIANT*
    ctypes.POINTER(ctypes.c_double),  # prgn : DOUBLE* out
    wintypes.DWORD,  # crgn : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pcElem : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROPSYS.dll')
PropVariantToDoubleVector = Fiddle::Function.new(
  lib['PropVariantToDoubleVector'],
  [
    Fiddle::TYPE_VOIDP,  # propvar : PROPVARIANT*
    Fiddle::TYPE_VOIDP,  # prgn : DOUBLE* out
    -Fiddle::TYPE_INT,  # crgn : DWORD
    Fiddle::TYPE_VOIDP,  # pcElem : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "propsys")]
extern "system" {
    fn PropVariantToDoubleVector(
        propvar: *const PROPVARIANT,  // PROPVARIANT*
        prgn: *mut f64,  // DOUBLE* out
        crgn: u32,  // DWORD
        pcElem: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("PROPSYS.dll")]
public static extern int PropVariantToDoubleVector(IntPtr propvar, out double prgn, uint crgn, out uint pcElem);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_PropVariantToDoubleVector' -Namespace Win32 -PassThru
# $api::PropVariantToDoubleVector(propvar, prgn, crgn, pcElem)

#uselib "PROPSYS.dll"
#func global PropVariantToDoubleVector "PropVariantToDoubleVector" sptr, sptr, sptr, sptr
; PropVariantToDoubleVector varptr(propvar), varptr(prgn), crgn, varptr(pcElem)   ; 戻り値は stat
; propvar : PROPVARIANT* -> "sptr"
; prgn : DOUBLE* out -> "sptr"
; crgn : DWORD -> "sptr"
; pcElem : DWORD* 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 "PROPSYS.dll"
#cfunc global PropVariantToDoubleVector "PropVariantToDoubleVector" var, var, int, var
; res = PropVariantToDoubleVector(propvar, prgn, crgn, pcElem)
; propvar : PROPVARIANT* -> "var"
; prgn : DOUBLE* out -> "var"
; crgn : DWORD -> "int"
; pcElem : DWORD* 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。

; HRESULT PropVariantToDoubleVector(PROPVARIANT* propvar, DOUBLE* prgn, DWORD crgn, DWORD* pcElem)
#uselib "PROPSYS.dll"
#cfunc global PropVariantToDoubleVector "PropVariantToDoubleVector" var, var, int, var
; res = PropVariantToDoubleVector(propvar, prgn, crgn, pcElem)
; propvar : PROPVARIANT* -> "var"
; prgn : DOUBLE* out -> "var"
; crgn : DWORD -> "int"
; pcElem : DWORD* 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 (
	propsys = windows.NewLazySystemDLL("PROPSYS.dll")
	procPropVariantToDoubleVector = propsys.NewProc("PropVariantToDoubleVector")
)

// propvar (PROPVARIANT*), prgn (DOUBLE* out), crgn (DWORD), pcElem (DWORD* out)
r1, _, err := procPropVariantToDoubleVector.Call(
	uintptr(propvar),
	uintptr(prgn),
	uintptr(crgn),
	uintptr(pcElem),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function PropVariantToDoubleVector(
  propvar: Pointer;   // PROPVARIANT*
  prgn: Pointer;   // DOUBLE* out
  crgn: DWORD;   // DWORD
  pcElem: Pointer   // DWORD* out
): Integer; stdcall;
  external 'PROPSYS.dll' name 'PropVariantToDoubleVector';

result := DllCall("PROPSYS\PropVariantToDoubleVector"
    , "Ptr", propvar   ; PROPVARIANT*
    , "Ptr", prgn   ; DOUBLE* out
    , "UInt", crgn   ; DWORD
    , "Ptr", pcElem   ; DWORD* out
    , "Int")   ; return: HRESULT

●PropVariantToDoubleVector(propvar, prgn, crgn, pcElem) = DLL("PROPSYS.dll", "int PropVariantToDoubleVector(void*, void*, dword, void*)")
# 呼び出し: PropVariantToDoubleVector(propvar, prgn, crgn, pcElem)
# propvar : PROPVARIANT* -> "void*"
# prgn : DOUBLE* out -> "void*"
# crgn : DWORD -> "dword"
# pcElem : DWORD* 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)。