前言
消息通知在应用程序中，是一种非常有用的功能，实现对一些重要信息、提醒或警告及时向用户展示。我们在使用软件时，通常会收到一种从桌面右下角弹出的（提示信息或广告）信息框。本文将介绍使用 C# 实现此种方式的信息通知窗口。
实现
1、使用 API 的 AnimateWindow 函数
定义 AnimateWindows
using System;
using System.Runtime.InteropServices;
namespace Fountain.WinForm.MessageBoxDemo
{
public class Win32
{
/// <summary>
/// 自左向右显示窗口,该标记可以在迁移转变动画和滑动动画中应用。应用AW_CENTER标记时忽视该标记
/// </summary>
public const int AW_HOR_POSITIVE = 0x0001;
/// <summary>
/// 自右向左显示窗口,该标记可以在迁移转变动画和滑动动画中应用。应用AW_CENTER标记时忽视该标记
/// </summary>
public const int AW_HOR_NEGATIVE = 0x0002;
/// <summary>
/// 自顶向下显示窗口,该标记可以在迁移转变动画和滑动动画中应用。应用AW_CENTER标记时忽视该标记
/// </summary>
public const int AW_VER_POSITIVE = 0x0004;
/// <summary>
/// 自下向上显示窗口,该标记可以在迁移转变动画和滑动动画中应用。应用AW_CENTER标记时忽视该标记该标记
/// </summary>
public const int AW_VER_NEGATIVE = 0x0008;
/// <summary>
/// 若应用了AW_HIDE标记,则使窗口向内重叠;不然向外扩大
/// </summary>
public const int AW_CENTER = 0x0010;
/// <summary>
/// 隐蔽窗口
/// </summary>
public const int AW_HIDE = 0x10000;
/// <summary>
/// 激活窗口,在应用了AW_HIDE标记后不要应用这个标记
/// </summary>
public const int AW_ACTIVE = 0x20000;
/// <summary>
/// 滑动类型动画结果,默认为迁移转变动画类型,当应用AW_CENTER标记时,这个标记就被忽视
/// </summary>
public const int AW_SLIDE = 0x40000;
/// <summary>
/// 淡入淡出结果
/// </summary>
public const int AW_BLEND = 0x80000;
/// <summary>
/// 窗体动画函数
/// </summary>
/// <param name="hwnd"></param>
/// <param name="dwTime"></param>
/// <param name="dwFlags"></param>
/// <returns></returns>
[DllImport("user32")]
public static extern bool AnimateWindow(IntPtr hwnd, int dwTime, int dwFlags);
}
}定义显示消息窗体
using System;
using System.Drawing;
using System.Windows.Forms;
namespace Fountain.WinForm.MessageBoxDemo
{
public partial class FormMessageBox : Form
{
/// <summary>
/// 关闭窗口的定时器
/// </summary>
private Timer formCloseTime = new Timer();
/// <summary>
/// 构造方法
/// </summary>
public FormMessageBox()
{
InitializeComponent();
}
/// <summary>
/// 窗体加载
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void FormMessageBox_Load(object sender, EventArgs e)
{
// 手动设置起始位置
this.StartPosition = FormStartPosition.Manual;
// 计算屏幕尺寸并将窗体放置在右下角
Rectangle screenRectangle = Screen.PrimaryScreen.WorkingArea;
int x = screenRectangle.Width - this.Width;
int y = screenRectangle.Height - this.Height;
this.Location = new Point(x, y);
this.TopMost = true;
Win32.AnimateWindow(this.Handle, 1000, Win32.AW_SLIDE + Win32.AW_VER_NEGATIVE);
this.ShowInTaskbar = false;
formCloseTime.Interval = 5000;
formCloseTime.Tick += new EventHandler(formCloseTime_Tick);
formCloseTime.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 formCloseTime_Tick(object sender, EventArgs e)
{
formCloseTime.Stop();
this.Close();
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void FormMessageBox_FormClosed(object sender, FormClosedEventArgs e)
{
formCloseTime.Stop();
formCloseTime.Dispose();
Win32.AnimateWindow(this.Handle, 1000, Win32.AW_SLIDE + Win32.AW_VER_POSITIVE + Win32.AW_HIDE);
}
}
}主界面调用
FormMessageBox formMessageBox = new FormMessageBox();
formMessageBox.Show();2、控制窗体显示
定义显示消息窗体
using System;
using System.Drawing;
using System.Threading;
using System.Windows.Forms;
namespace Fountain.WinForm.MessageBoxDemo
{
public partial class FormNotifyBox : Form
{
/// <summary>
/// 关闭窗口的定时器
/// </summary>
private System.Windows.Forms.Timer formCloseTime = new System.Windows.Forms.Timer();
/// <summary>
///
/// </summary>
private Point formPoint;
/// <summary>
///
/// </summary>
public FormNotifyBox()
{
InitializeComponent();
this.formPoint = new Point(Screen.PrimaryScreen.WorkingArea.Width - this.Width, Screen.PrimaryScreen.WorkingArea.Height);
// 设置窗体在屏幕右下角显示
this.Location = formPoint;
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void FormNotifyBox_Load(object sender, EventArgs e)
{
try
{
formCloseTime.Interval = 5000;
formCloseTime.Tick += new EventHandler(formCloseTime_Tick);
formCloseTime.Start();
this.TopMost = false;
this.BringToFront();
this.TopMost = true;
this.PointToClient(this.formPoint);
this.Location = this.formPoint;
this.Show();
for (int i = 0; i < this.Height; i++)
{
this.Location = new Point(formPoint.X, formPoint.Y - i);
// 消息框弹出速度，数值越大越慢
Thread.Sleep(1);
}
}
catch (Exception exception)
{
}
}
/// <summary>
/// 关闭窗口的定时器响应事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void formCloseTime_Tick(object sender, EventArgs e)
{
formCloseTime.Enabled = false;
for (int i = 0; i <= this.Height; i++)
{
//弹出框向下移动消失
Point point = new Point(this.Location.X, this.Location.Y + i);
this.PointToScreen(point);
//即时转换成屏幕坐标
this.Location = point;
//下降速度调节，数字越小消失的速度越快，建议不大于10
Thread.Sleep(8);
}
this.Close();
this.Dispose();
}
}
}主界面调用
FormNotifyBox notifyForm = new FormNotifyBox();
notifyForm.Show();
