MinLock, a KeePass 2.x Plugin to keep minimized KeePass Locked

using System;
using System.Windows.Forms;

using KeePass.Plugins;

namespace MinLock
{
  public sealed class MinLockExt : Plugin
  {
    IPluginHost m_Host;
    Timer m_Timer;

    public override bool Initialize(IPluginHost host)
    {
      m_Host = host;

      // Upon unlocking, the database is opened and this event fires;
      // it likely fires other times too (e.g. opening db from menu).
      m_Host.MainWindow.FileOpened += MainWindow_FileOpened;

      return base.Initialize(host);
    }

    public override void Terminate()
    {
      KillTimer();
      base.Terminate();
    }

    void KillTimer()
    {
      if (m_Timer != null)
      {
        m_Timer.Dispose();
        m_Timer = null;
      }
    }

    void MainWindow_FileOpened(object sender, KeePass.Forms.FileOpenedEventArgs e)
    {
      if (m_Timer == null && m_Host.MainWindow.WindowState == FormWindowState.Minimized)
      {
        // Start a Windows.Forms.Timer, because it's based on the event loop it
        // can't interrupt current calls, though calls to Application.DoEvents
        // could wreak havoc, but that doesn't appear to be a problem here.
        m_Timer = new Timer();
        m_Timer.Interval = 1;
        m_Timer.Tick += Timer_Tick;
        m_Timer.Start();
      }
    }

    void Timer_Tick(object sender, EventArgs e)
    {
      KillTimer();

      if (m_Host.MainWindow.WindowState == FormWindowState.Minimized &&
          m_Host.MainWindow.IsAtLeastOneFileOpen())
      {
        m_Host.MainWindow.LockAllDocuments();
      }
    }
  }
}