using System;

// ElementaryExtensions API:
using ElementaryExtensions;

namespace MiscellaneousDemo {

//**************************************************************************************************
static partial class Program {
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

/// <summary>
/// Accessing <see cref="ЄWin32Error"/> class.
/// </summary>
static void Win32ErrorDemo()
{
   int nWin32Error;

   ЄConsole.PrintDialogCaption(
      "Input Win32 error codes to extract system messages:" );

   for (;;)
   {
      ЄConsole.Print();

      if (!InputErrorCode(out nWin32Error))
         break;

      string strErrorMessage=
         ЄWin32Error.ErrorCodeToMessage(nWin32Error,true);
      if (strErrorMessage!=null)
         ЄConsole.PrintExpressive(strErrorMessage);
      else
         ЄConsole.PrintFaint("System message not found by code.");
   }
}

/// <summary>
/// Helper function, to input Win32 error code.
/// </summary>
static bool InputErrorCode(out int nWin32Error)
{
   nWin32Error=0;

   string strCheckedInput=
      ЄConsole.InputString
      (
         "Win32 error code (dec.)",
         delegate (string strInput)
         {
            int nNumber;
            return ЄValueParser.TryParseInt32Invariant(strInput,out nNumber) &&
                   nNumber>=0;
         }
      );
   if (strCheckedInput==null)
      return false;

   nWin32Error=ЄValueParser.ParseInt32Invariant(strCheckedInput);

   return true;
}

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
} // Program
//**************************************************************************************************

} // MiscellaneousDemo