托盘程序导致无法注销或关机

解决办法：在MainForm中重写Windows消息处理方法

示例：

using System;
using System.Windows.Forms;
using Microsoft.Win32;

namespace WindowsFormsApplication1
{
public partial class MainForm : Form
{
private const UInt32 WM_ENDSESSION = 0x0016;

public MainForm()
{
InitializeComponent();
}

protected override void WndProc(ref Message message)
{
if (WM_ENDSESSION == message.Msg)
{
Application.Exit();
}
base.WndProc(ref message);
}
}
}