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using System;
using System.Diagnostics;
using System.Windows.Input;

namespace SimpleMVVM
{
	public class RelayCommand : ICommand
	{
		private readonly Action<object> execute;
		private readonly Predicate<object> canExecute;

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# StdinPipe.ps1 [-InputObject] <string[]> [-ReqireParam] <string> [[-OptionalParam] <string>] [<CommonParameters>]
[CmdletBinding()]
param (
    [parameter(Mandatory=$true,ValueFromPipeline=$true,HelpMessage="標準入力か引数で受け取るデータ")]
    [string[]]$InputObject,
    [parameter(Mandatory=$true,ValueFromPipeline=$false,HelpMessage="必須パラメータ")]
    [string]$ReqireParam,
    [parameter(Mandatory=$false,ValueFromPipeline=$false,HelpMessage="オプションパラメータ")]
    [string]$OptionalParam
)

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// 排他制御せずにレンダリングしてもらう(メモリイータータイプ)
private ImageSource CreateThumbnail( stirng filePath, Cube.Pdf.Page page )
{
  using( var renderer = new DocumentRenderer( filePath ) )
  using( var image = renderer.Render( page, page.Size ) )
  using( var stream = new MemoryStream() )
  {
    image.Save( stream, ImageFormat.png );
    stream.Seek( 0, SeekOrigin.Begin );
    return BitmapFrame( stream, BitmapCreateOptions.None, BitmapCacheOption.OnLoad );

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class ClassA
{
public:
  static bool IsValidHandle( HANDLE handle )
  {
    //return handle != INVALID_HANDLE_VALUE;
    return handle != INVALID_HANDLE_VALUE && handle != nullptr;
    //return handle != nullptr;
  }
  // ハンドルの複製をどうするかは何のハンドルかに依存するのでここでは言及しない

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// リソースファイル上はこんな感じで格納
// #define IDB_PNG 12345
// IDB_PNG PNG                     "res\\png.png"
Gdiplus::Bitmap* LoadPngFromResource( HINSTANCE hInst, UINT resID )
{
  HRSRC hResInfo = FindResource( hInst, MAKEINTRESOURCE(resID), _T("PNG") );
  HGLOBAL hResImage = LoadResource( hModule, hResInfo );
  DWORD	size = SizeofResource( hModule, hResInfo );
  const BYTE*	srcImage = static_cast<const BYTE*>( LockResource( hResImage ) );
  IStreamPtr	ptrStream( SHCreateMemStream( srcImage, size ) );

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int RunMessageLoop()
{
  MSG msg;
  while( GetMessage( &msg, nullptr, 0, 0 ) )
  {
    TranslateMessage( &msg );
    DispatchMessage( &msg );
  }
  return msg.wParam;
}

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int RunMessageLoop()
{
  MSG msg;
  do{
    if( PeekMessage( &msg, nullptr, 0, 0, PM_REMOVE ) )
    {
      if( msg.message != WM_QUIT && !PreTranslateMessage( &msg ) )
      {
        TranslateMessage( &msg );
        DispatchMesage( &msg );

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int RunMessageLoop()
{
  MSG msg = { 0 };
  BOOL ret;
  while( (ret=GetMessage( &msg, nullptr, 0, 0 )) != 0 )
  {
    if( ret == -1 )
    {
      // 必要に応じてエラー処理を施す。場合によっては終了する
    }

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#include <map>
#include <functional>
// waitActions に登録する例は載せていない(通常は、排他制御して追加処理するのが良い)
std::map<HANDLE, std::function<bool(bool,bool&)>> waitActions;

DWORD APIENTRY SetupWaitHandles( HANDLE* waitHandles, DWORD capacityCount )
{
	DWORD waitCount = 0;
	if( capacityCount > 0 )
	{

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[
	local,
	object,
	uuid(00000000-0000-0000-C000-000000000046),

	pointer_default(unique)
]
interface IUnknown
{
	typedef [unique] IUnknown *LPUNKNOWN;