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/*
KeePass Password Safe - The Open-Source Password Manager
Copyright (C) 2003-2017 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.Drawing;
using System.Windows.Forms;
using System.ComponentModel;
using System.Diagnostics;
using KeePass.Native;
using KeePass.Util;
namespace KeePass.UI
{
public sealed class SplitButtonEx : Button
{
private const int BS_SPLITBUTTON = 0x0000000C;
private const uint BCN_FIRST = unchecked((uint)(-1250));
private const uint BCN_DROPDOWN = (BCN_FIRST + 0x0002);
private readonly bool m_bSupported;
private ContextMenuStrip m_ctx = null;
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public ContextMenuStrip SplitDropDownMenu
{
get { return m_ctx; }
set { m_ctx = value; }
}
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
protected override CreateParams CreateParams
{
get
{
CreateParams cp = base.CreateParams;
if(m_bSupported) cp.Style |= BS_SPLITBUTTON;
return cp;
}
}
public SplitButtonEx() : base()
{
m_bSupported = (WinUtil.IsAtLeastWindowsVista &&
!KeePassLib.Native.NativeLib.IsUnix() && !Program.DesignMode);
if(m_bSupported)
{
this.FlatStyle = FlatStyle.System;
}
}
protected override void WndProc(ref Message m)
{
if((m.Msg == NativeMethods.WM_NOTIFY_REFLECT) && m_bSupported)
{
try
{
NativeMethods.NMHDR nm = (NativeMethods.NMHDR)m.GetLParam(
typeof(NativeMethods.NMHDR));
if(nm.code == BCN_DROPDOWN)
{
if(m_ctx != null)
{
m_ctx.Show(this, new Point(0, this.Height));
return; // We handled it
}
else { Debug.Assert(false); }
}
}
catch(Exception) { Debug.Assert(false); }
}
base.WndProc(ref m);
}
}
}
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