c#写的软件很多，如何添加诸如像搜狗输入法软件与灵格斯翻译软件的屏幕右下角弹出式广告呢。
c#代码如下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using System.Runtime.InteropServices;

namespace dataSource
{

/// <summary>
/// 枚举，描述消息窗口加载的形式
/// </summary>
public enum LoadMode
{
    /// <summary>
    /// 警告
    /// </summary>
    Warning,

    /// <summary>
    /// 错误
    /// </summary>
    Error,

    /// <summary>
    /// 提示
    /// </summary>
    Prompt
}

/// <summary>
/// 消息提示窗口

///

public partial class FormMessageBox : Form
{
    /// <summary>
    /// 构造方法
    /// </summary>
    public FormMessageBox()
    {
        InitializeComponent();
    }


    #region ***********************字 段***********************

    /// <summary>
    /// 窗体加载模式
    /// </summary>
    private static LoadMode FormMode = LoadMode.Prompt;

    /// <summary>
    /// 显示的消息正文
    /// </summary>
    private static string ShowMessage = null;

    /// <summary>
    /// 关闭窗口的定时器
    /// </summary>
    private Timer Timer_Close = new Timer();

///

/// 构造方法
    /// </summary>
    public FormMessageBox()
    {

[DllImportAttribute(“user32.dll”)]

private static extern bool AnimateWindow(IntPtr hwnd, int dwTime, int dwFlags);   // 该函数可以实现窗体的动画效果

    public const Int32 AW_HOR_POSITIVE = 0x00000001;   // 自左向右显示窗口。该标志可以在滚动动画和滑动动画中使用。当使用AW_CENTER标志时，该标志将被忽略 
    public const Int32 AW_HOR_NEGATIVE = 0x00000002;   // 自右向左显示窗口。当使用了 AW_CENTER 标志时该标志被忽略

    public const Int32 AW_VER_POSITIVE = 0x00000004;   // 自顶向下显示窗口。该标志可以在滚动动画和滑动动画中使用。当使用AW_CENTER标志时，该标志将被忽略
    public const Int32 AW_VER_NEGATIVE = 0x00000008;   // 自下向上显示窗口。该标志可以在滚动动画和滑动动画中使用。当使用AW_CENTER标志时，该标志将被忽略

    public const Int32 AW_CENTER = 0x00000010;         // 若使用了AW_HIDE标志，则使窗口向内重叠；若未使用AW_HIDE标志，则使窗口向外扩展
    public const Int32 AW_HIDE = 0x00010000;           // 隐藏窗口，缺省则显示窗口
    public const Int32 AW_ACTIVATE = 0x00020000;       // 激活窗口。在使用了AW_HIDE标志后不要使用这个标志
    public const Int32 AW_SLIDE = 0x00040000;          // 使用滑动类型。缺省则为滚动动画类型。当使用AW_CENTER标志时，这个标志就被忽略
    public const Int32 AW_BLEND = 0x00080000;          // 使用淡入效果。只有当hWnd为顶层窗口的时候才可以使用此标志

    #endregion*************************************************


    #region ***********************方 法***********************

    /// <summary>
    /// 构造方法
    /// </summary>
    /// <param name="loadMode">加载模式</param>
    /// <param name="message">消息正文</param>

    public static void Show(LoadMode loadMode, string message)
        InitializeComponent();
    }


    #region ***********************字 段***********************

    /// <summary>
    /// 窗体加载模式
    /// </summary>
    private static LoadMode FormMode = LoadMode.Prompt;

    /// <summary>
    /// 显示的消息正文
    /// </summary>
    private static string ShowMessage = null;

    /// <summary>
    /// 关闭窗口的定时器
    /// </summary>
    private Timer Timer_Close = new Timer();

FormMode = loadMode;

ShowMessage = message;

        FormMessageBox box = new FormMessageBox();
        box.Show();
    }



    #endregion*************************************************


    #region ***********************事 件***********************

    /// <summary>
    /// 窗体加载事件
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void FormMessageBox_Load(object sender, EventArgs e)
    {
        this.lblTitle.Text = "提示";
        if (FormMode == LoadMode.Error)
        {
            this.lblTitle.Text = "错误";
            this.plShow.BackgroundImage = global::dataSource.Properties.Resources.error;    // 更换背景
        }
        else if (FormMode == LoadMode.Warning)
        {
            this.lblTitle.Text = "警告";
            this.plShow.BackgroundImage = global::dataSource.Properties.Resources.warning;  // 更换背景
        }
        else

{

this.plShow.BackgroundImage = global::dataSource.Properties.Resources.Prompt;   // 更换背景
        }

        this.lblMessage.Text = ShowMessage;

        int width = System.Windows.Forms.Screen.PrimaryScreen.Bounds.Width;
        int height = System.Windows.Forms.Screen.PrimaryScreen.Bounds.Height;
        int top = height - 35 - this.Height;
        int left = width - this.Width - 5;
        this.Top = top;
        this.Left = left;
        this.TopMost = true;

        AnimateWindow(this.Handle, 500, AW_SLIDE + AW_VER_NEGATIVE);//开始窗体动画

        this.ShowInTaskbar = false;

        Timer_Close.Interval = 4000;
        Timer_Close.Tick += new EventHandler(Timer_Close_Tick);
        Timer_Close.Start();
    }

    /// <summary>
    /// 关闭窗口的定时器响应事件
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void Timer_Close_Tick(object sender, EventArgs e)
    {
        Timer_Close.Stop();

        this.Close();

///

/// 窗口已经关闭
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void FormMessageBox_FormClosed(object sender, FormClosedEventArgs e)
    {
        AnimateWindow(this.Handle, 500, AW_SLIDE + AW_VER_POSITIVE + AW_HIDE);

        Timer_Close.Stop();
        Timer_Close.Dispose();
    }

    /// <summary>
    /// 鼠标移动在消息框上
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void plShow_MouseMove(object sender, MouseEventArgs e)
    {
        this.Timer_Close.Stop();
    }

    /// <summary>
    /// 鼠标移动离开消息框上
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void plShow_MouseLeave(object sender, EventArgs e)
    {
        this.Timer_Close.Start();
    }

endregion*

代码已经完全提供

c#桌面应用程序如何添加弹出式广告