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/*
KeePass Password Safe - The Open-Source Password Manager
Copyright (C) 2003-2019 Dominik Reichl <dominik.reichl@t-online.de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using KeePass.Native;
using KeePass.Util;
namespace KeePass.UI
{
internal sealed class CustomMessageFilterEx : IMessageFilter
{
public bool PreFilterMessage(ref Message m)
{
if((m.Msg == NativeMethods.WM_KEYDOWN) || (m.Msg == NativeMethods.WM_LBUTTONDOWN) ||
(m.Msg == NativeMethods.WM_RBUTTONDOWN) || (m.Msg == NativeMethods.WM_MBUTTONDOWN))
{
Program.NotifyUserActivity();
}
// Workaround for .NET 4.6 overflow bug in InputLanguage.Culture
// (handle casted to Int32 without the 'unchecked' keyword);
// https://sourceforge.net/p/keepass/bugs/1598/
// https://stackoverflow.com/questions/25619831/arithmetic-operation-resulted-in-an-overflow-in-inputlanguagechangingeventargs
// https://referencesource.microsoft.com/#System.Windows.Forms/winforms/Managed/System/WinForms/InputLanguage.cs
if(m.Msg == NativeMethods.WM_INPUTLANGCHANGEREQUEST)
{
long l = m.LParam.ToInt64();
if((l < (long)int.MinValue) || (l > (long)int.MaxValue))
return true; // Ignore it (better than an exception)
}
return false;
}
}
}
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