QQ 有某些新闻，就会在右下角弹出一个提示框，请问这个用 WINFORM（C#） 怎么做啊？
当然， 我说的不是 它的那个效果。
是怎样判断服务器有新消息了，
服务器又怎样把消息发送到客户端，
客户端又怎样接收，
接收后怎样触发事件弹出这个框来。希望各位前辈 给个详细的方案我，或者 有源码 研究一下的。感激不尽！
当然， 我说的不是 它的那个效果。
是怎样判断服务器有新消息了，
服务器又怎样把消息发送到客户端，
客户端又怎样接收，
接收后怎样触发事件弹出这个框来。希望各位前辈 给个详细的方案我，或者 有源码 研究一下的。感激不尽！
用个timer做个定时请求新消息有就弹出。。
VS2005 设计器代码，需要修正一下，我里面用了图片partial class PromptFrm
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null; /// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
} #region Windows 窗体设计器生成的代码 /// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.m_timerShow = new System.Windows.Forms.Timer(this.components);
this.m_LnkMain = new System.Windows.Forms.LinkLabel();
this.m_Main = new System.Windows.Forms.Label();
this.m_picLock = new System.Windows.Forms.PictureBox();
this.m_picExit = new System.Windows.Forms.PictureBox();
this.m_toolTip = new System.Windows.Forms.ToolTip(this.components);
((System.ComponentModel.ISupportInitialize)(this.m_picLock)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.m_picExit)).BeginInit();
this.SuspendLayout();
//
// m_timerShow
//
this.m_timerShow.Interval = 10;
//
// m_LnkMain
//
this.m_LnkMain.AutoSize = true;
this.m_LnkMain.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline;
this.m_LnkMain.Location = new System.Drawing.Point(39, 47);
this.m_LnkMain.Name = "m_LnkMain";
this.m_LnkMain.Size = new System.Drawing.Size(140, 19);
this.m_LnkMain.TabIndex = 3;
this.m_LnkMain.TabStop = true;
this.m_LnkMain.Text = "在这里显示内容提示内容";
this.m_LnkMain.UseCompatibleTextRendering = true;
//
// m_Main
//
this.m_Main.AutoSize = true;
this.m_Main.Location = new System.Drawing.Point(37, 6);
this.m_Main.Name = "m_Main";
this.m_Main.Size = new System.Drawing.Size(29, 12);
this.m_Main.TabIndex = 5;
this.m_Main.Text = "标题";
//
// m_picLock
//
this.m_picLock.Image = global::Billionlink.UI.WinForm.BaseFrm.Properties.Resources.UnLock;
this.m_picLock.Location = new System.Drawing.Point(3, 2);
this.m_picLock.Name = "m_picLock";
this.m_picLock.Size = new System.Drawing.Size(32, 32);
this.m_picLock.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
this.m_picLock.TabIndex = 6;
this.m_picLock.TabStop = false;
this.m_toolTip.SetToolTip(this.m_picLock, "Lock Tips");
//
// m_picExit
//
this.m_picExit.Image = global::Billionlink.UI.WinForm.BaseFrm.Properties.Resources.TipsExit;
this.m_picExit.Location = new System.Drawing.Point(259, 2);
this.m_picExit.Name = "m_picExit";
this.m_picExit.Size = new System.Drawing.Size(16, 16);
this.m_picExit.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
this.m_picExit.TabIndex = 4;
this.m_picExit.TabStop = false;
this.m_toolTip.SetToolTip(this.m_picExit, "Close Tips");
//
// PromptFrm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.BackColor = System.Drawing.Color.Cornsilk;
this.ClientSize = new System.Drawing.Size(278, 209);
this.Controls.Add(this.m_picLock);
this.Controls.Add(this.m_Main);
this.Controls.Add(this.m_picExit);
this.Controls.Add(this.m_LnkMain);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
this.Name = "PromptFrm";
this.ShowInTaskbar = false;
this.Text = "PromptFrm";
this.TopMost = true;
this.Load += new System.EventHandler(this.PromptFrm_Load);
((System.ComponentModel.ISupportInitialize)(this.m_picLock)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.m_picExit)).EndInit();
this.ResumeLayout(false);
this.PerformLayout(); } #endregion private System.Windows.Forms.Timer m_timerShow;
private System.Windows.Forms.LinkLabel m_LnkMain;
private System.Windows.Forms.PictureBox m_picExit;
private System.Windows.Forms.Label m_Main;
private System.Windows.Forms.PictureBox m_picLock;
private System.Windows.Forms.ToolTip m_toolTip;
}
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;namespace Billionlink.UI.WinForm.BaseFrm
{
/// <summary>
/// 提醒功能窗口
/// </summary>
public partial class PromptFrm : ImeFrm
{
#region -变量定义 /// <summary>
/// 保存鼠标按下时鼠标在窗口的坐标
/// </summary>
private int m_CurX = 0; /// <summary>
/// 保存鼠标按下时鼠标在窗口的坐标
/// </summary>
private int m_CurY = 0; /// <summary>
/// 鼠标按下为true
/// </summary>
private bool m_MouseDown = false; /// <summary>
/// 取得或者设置用户是否可以移动提示框
/// </summary>
private bool m_bCanMove = true; /// <summary>
/// 单击提示信息事件(非设计器事件)
/// </summary>
public event DelegateClickPrompt ClickPromptEventHandler; /// <summary>
/// 点击“退出”按钮事件
/// </summary>
public event EventHandler<CusEventArgs> ExitEventHandler; /// <summary>
/// 提示窗口停留的延迟时间
/// </summary>
private int m_lStayTime = 1000 * 6; /// <summary>
/// 计数窗口停留的延迟时间
/// </summary>
private int m_lStayTimeTick = 0; /// <summary>
/// 窗口弹出时的步进值(默认每个间隔1个象素)
/// </summary>
private int m_nSetp = 2; /// <summary>
/// 窗口的真实高度
/// </summary>
private int m_nRealHeight = 160; /// <summary>
/// 表示是否由用户关闭了窗口
/// </summary>
private bool m_bUserClose = false; /// <summary>
/// 是否锁定Tips显示状态
/// </summary>
private bool m_bIsLock = false; /// <summary>
/// 取得提示窗口是否显示
/// </summary>
private bool m_bIsVisible = false; /// <summary>
/// 开始渐现窗口
/// </summary>
private bool m_bStart = true; #endregion #region -构造函数 /// <summary>
/// 构造函数
/// </summary>
public PromptFrm()
{
InitializeComponent();
this.m_nRealHeight = this.Height;
this.Visible = false;
} #endregion #region -属性 /// <summary>
/// 提示窗口停留的延迟时间(以毫秒为单位,赋值-1则永远停留)
/// </summary>
public int PromptDelayTime
{
get
{
return this.m_lStayTime;
}
set
{
if (value <= -1)
{
this.m_lStayTime = Int32.MaxValue;
}
else
{
this.m_lStayTime = value;
}
}
} /// <summary>
/// 取得或设置提示窗口的标题
/// </summary>
public string PromptTitle
{
get
{
return this.m_Main.Text;
}
set
{
this.m_Main.Text = value;
}
} /// <summary>
/// 取得或设置提示窗口的内容
/// </summary>
public string PromptText
{
get
{
return this.m_LnkMain.Text;
}
set
{
this.m_LnkMain.Text = value;
}
} /// <summary>
/// 窗口弹出时的步进值(默认每个间隔1个象素)
/// </summary>
public int Setp
{
get
{
return this.m_nSetp;
}
set
{
this.m_nSetp = value;
}
} /// <summary>
/// 取得或者设置用户是否可以移动提示框
/// </summary>
public bool CanMove
{
get
{
return this.m_bCanMove;
}
set
{
this.m_bCanMove = value;
}
} /// <summary>
/// 取得提示窗口是否显示
/// </summary>
public bool IsVisible
{
get
{
return this.m_bIsVisible;
}
} #endregion #region -窗口事件 /// <summary>
/// Load...
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void PromptFrm_Load(object sender, EventArgs e)
{
this.m_picLock.Click += new EventHandler(m_picLock_Click);
this.m_picExit.Click += new EventHandler(m_picExit_Click);
this.m_picExit.MouseEnter += new EventHandler(m_picExit_MouseEnter);
this.m_picExit.MouseLeave += new EventHandler(m_picExit_MouseLeave);
this.Paint += new PaintEventHandler(PromptFrm_Paint);
this.m_timerShow.Tick += new EventHandler(m_timerShow_Tick);
this.m_LnkMain.Click += new EventHandler(m_LnkMain_Click); //上升窗口代码
//this.Height = 0;
//this.Location = new Point(Screen.AllScreens[0].WorkingArea.Width - this.Width - 3, Screen.AllScreens[0].WorkingArea.Height - 3);
// 改为渐变显示
this.Location = new Point(Screen.AllScreens[0].WorkingArea.Width - this.Width - 5, Screen.AllScreens[0].WorkingArea.Height - this.Height - 30);
} /// <summary>
/// 锁定窗口
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void m_picLock_Click(object sender, EventArgs e)
{
if (this.m_timerShow.Enabled)
{
this.m_bIsLock = !this.m_bIsLock;
this.m_picLock.Image = this.m_bIsLock ? global::Billionlink.UI.WinForm.BaseFrm.Properties.Resources.Lock : global::Billionlink.UI.WinForm.BaseFrm.Properties.Resources.UnLock;
}
} /// <summary>
/// 绘制边框
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void PromptFrm_Paint(object sender, PaintEventArgs e)
{
ControlPaint.DrawBorder(e.Graphics, new Rectangle(0, 0, this.Width, this.Height), Color.Black, ButtonBorderStyle.Solid);
}
接着上面的，这三个回复是提醒窗口的代码，支持上升、和渐隐、渐现模式/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void m_picExit_MouseLeave(object sender, EventArgs e)
{
//this.m_picExit.Location = new Point(this.m_picExit.Location.X + 1, this.m_picExit.Location.Y);
this.m_picExit.Height -= 1;
this.m_picExit.Width -= 1;
} /// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void m_picExit_MouseEnter(object sender, EventArgs e)
{
//this.m_picExit.Location = new Point(this.m_picExit.Location.X - 1, this.m_picExit.Location.Y);
this.m_picExit.Height += 1;
this.m_picExit.Width += 1;
} #endregion #region -窗体移动 /// <summary>
/// 鼠标按下
/// </summary>
/// <param name="e"></param>
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (this.m_bCanMove)
{
this.m_CurX = e.X; //保存鼠标按下是鼠标在窗口的坐标
this.m_CurY = e.Y;
this.m_MouseDown = true;
}
}
/// <summary>
/// 鼠标抬起
/// </summary>
/// <param name="e"></param>
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (this.m_bCanMove)
{
this.m_MouseDown = false;
}
}
/// <summary>
/// 鼠标移动
/// </summary>
/// <param name="e"></param>
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (this.m_bCanMove && this.m_MouseDown)
{
//Cursor.Position .X Cursor.Position .Y 是屏幕坐标
//用屏幕坐标减窗口坐标以保持鼠标总是在窗口的原位置.
this.SetDesktopLocation(Cursor.Position.X - this.m_CurX, Cursor.Position.Y - this.m_CurY);
}
} #endregion #region -计时器事件 /// <summary>
/// 显示提示窗口(采用缓慢提升窗口方式显示)
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void m_timerShow_Tick(object sender, EventArgs e)
{
//上升窗口代码
// 显示窗口，直到正常高度
//if (this.Height <= this.m_nRealHeight)
//{
// // 增加高度，降低Y坐标
// this.Height += this.m_nSetp;
// this.Location = new Point(this.Location.X, this.Location.Y - this.m_nSetp);
// this.Refresh();
//}
if (this.Opacity < 1.0F && this.m_bStart)
{
this.Opacity += 0.01F;
if (this.Bounds.Contains(Cursor.Position))
{
this.Opacity = 1.0F;
}
if (this.Opacity >= 1.0F)
{
this.m_bStart = false;
}
}
else
{
// 计数完成后，开始隐藏窗口
if (this.m_lStayTimeTick >= this.m_lStayTime)
{
// 隐藏过程中，如果用户操作提示框，则提示框变为不透明，且重新计数隐藏延迟时间
if ((!this.m_bUserClose && this.Bounds.Contains(Cursor.Position)) || this.m_bIsLock)
{
this.m_lStayTimeTick = 0;
this.Opacity = 1.0F;
return;
}
if (this.Opacity > 0F)
{
this.Opacity -= 0.01F;
}
else
{
// 所有变量初始化
//上升窗口代码
//this.Location = new Point(Screen.AllScreens[0].WorkingArea.Width - this.Width - 3, Screen.AllScreens[0].WorkingArea.Height - 3);
//this.Height = 0;
// 改为渐变显示
this.Location = new Point(Screen.AllScreens[0].WorkingArea.Width - this.Width - 5, Screen.AllScreens[0].WorkingArea.Height - this.Height - 30); this.m_bUserClose = false;
this.m_lStayTimeTick = 0;
this.m_timerShow.Enabled = false;
this.m_picLock.Image = global::Billionlink.UI.WinForm.BaseFrm.Properties.Resources.UnLock;
this.m_bIsLock = false;
this.m_bIsVisible = false;
this.m_bStart = true;
}
}
else
{
// 如果此时用户选择退出，则终止计数
if (this.m_bUserClose)
{
this.m_lStayTimeTick = this.m_lStayTime;
this.m_bIsLock = false;
return;
}
// 提示框弹出后，开始计数
this.m_lStayTimeTick += this.m_timerShow.Interval;
}
}
} #endregion #region -控件事件 /// <summary>
/// 关闭提示窗口
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void m_picExit_Click(object sender, EventArgs e)
{
if (this.ExitEventHandler != null)
{
CusEventArgs Args = new CusEventArgs("Exit");
this.ExitEventHandler(this, Args);
if (Args.Cancel)
{
return;
}
}
if (this.m_timerShow.Enabled)
{
// 关闭延迟计时,并开始隐藏窗口
this.m_bUserClose = true;
}
else
{
this.Visible = false;
this.m_bIsVisible = false;
}
} /// <summary>
/// 单击提示内容
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void m_LnkMain_Click(object sender, EventArgs e)
{
if (this.ClickPromptEventHandler != null)
{
this.ClickPromptEventHandler(new PromptEventArgs(""));
}
else
{
}
} #endregion #region -接口
/// <summary>
/// 显示提示窗口
/// </summary>
/// <param name="strText">显示的文本</param>
/// <param name="strTitle">标题</param>
/// <param name="bIsAnimation">是否采用动画</param>
public void ShowPromptFrm(string strText, string strTitle, bool bIsAnimation)
{
if (this.m_bIsVisible)
{
return;
}
if (bIsAnimation)
{
this.m_Main.Text = strTitle;
this.m_LnkMain.Text = strText;
//上升窗口代码
//this.Opacity = 1.0F;
this.Opacity = 0.0F;
this.m_bStart = true; this.Show();
//WAToolsWin32.Win32API.ShowWindow(this.Handle, (short)WAToolsWin32.ShowWindowStyles.SW_SHOWNOACTIVATE);
this.m_timerShow.Enabled = true;
this.m_bIsVisible = true;
}
else
{
this.m_timerShow.Enabled = false;
this.m_Main.Text = strTitle;
this.m_LnkMain.Text = strText;
this.Opacity = 1.0F;
this.Height = this.m_nRealHeight;
//switch (tsp)
//{
// case TipsShowPoint.RightBottom:
// this.Location = new Point(CommonBase.MainMdiForm.ClientRectangle.Width - this.Width - 3, CommonBase.MainMdiForm.ClientRectangle.Height - this.Height - 3);
// break; // case TipsShowPoint.LeftTop:
// this.Location = new Point(CommonBase.MainMdiForm.ClientRectangle.Right - this.Width - 3, CommonBase.MainMdiForm.ClientRectangle.Top + 3);
// break;
//} this.Show();
this.m_bIsVisible = true;
}
} #endregion
}
}
当然你可以采用以上的方式，这样客户端和服务器端就可以实时连接，读取新闻。
这样做会增大服务器压力，编码难度稍大通常的做法是在服务器上开一个webservice或者写一个aspx页面，
然后客户端定时读取webservice或aspx页面我采用的是webservice方式，客户端用异步委托（你可以用Timer，这个简单）每60秒访问一次服务器，读取最新的新闻，新闻是否是最新的可以通过时间字段进行判断。
当有新的新闻的时候，弹出提示框。这里有个问题，你要注意。提示框是通过Show（）弹出，当提示框正在弹出或已经弹出的时候，如果一个ShowDialog（）的模态窗口也弹出，则提示框将被模态窗口阻止，直到你关闭模态窗口为止
所谓阻止就是不能操作，看还是可以的
自己看吧 就这个
可以用windows service实现