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using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

namespace ClientControl

{

//1.定義委托

public delegate void NewsClickEventHandle(object sender,NewsEventArg args);

public partial class NewsStage : Control

{

//2.定義事件

public event NewsClickEventHandle NewsClicked;

private Graphics g;

private bool isMouseOn = false;

public NewsStage()

{

InitializeComponent();

//3.事件觸發(fā)，這樣少了事件注冊，我們在其他窗體中引用控件時(shí)只需要注冊事件和編輯事件處理程序即可，可以對比上一篇博客

this.Click += new EventHandler(NewsStage_Click);

this.MouseMove += new MouseEventHandler(NewsStage_MouseMove);

this.MouseLeave += new EventHandler(NewsStage_MouseLeave);

}

void NewsStage_MouseLeave(object sender, EventArgs e)

{

isMouseOn = false;

this.Invalidate();

}

void NewsStage_MouseMove(object sender, MouseEventArgs e)

{

isMouseOn = true;

this.Invalidate();

}

//新聞被點(diǎn)擊 事件觸發(fā)方法

void NewsStage_Click(object sender, EventArgs e)

{

if (_NewsID>=0&&_NewsTitle!="")

{

NewsEventArg myArgs = new NewsEventArg(_NewsID,_NewsTitle);

NewsClicked(this, myArgs);

}

}

private int _NewsID = 0;

[Description("新聞ID"), Category("Appearance")]

public int NewsID

{

get { return _NewsID; }

set

{

_NewsID = value;

this.Invalidate();

}

}

/// <summary>

/// 新聞標(biāo)題

/// </summary>

private string _NewsTitle = "";

[Description("新聞標(biāo)題"), Category("Appearance")]

public string NewsTitle

{

get { return _NewsTitle; }

set

{

_NewsTitle = value;

this.Invalidate();

}

}

private Color _MouseOnColor = new Color();

[Description("鼠標(biāo)劃上的樣色"), Category("Appearance")]

public Color MouseOnColor

{

get { return _MouseOnColor; }

set

{

_MouseOnColor = value;

}

}

protected override void OnPaint(PaintEventArgs pe)

{

base.OnPaint(pe);

g = this.CreateGraphics();

if (isMouseOn)

{

g.DrawString(_NewsTitle, this.Font, new SolidBrush(this._MouseOnColor), new PointF(0, 0));

}

else

{

g.DrawString(_NewsTitle, this.Font, new SolidBrush(this.ForeColor), new PointF(0, 0));

}

}

protected void Dispose()

{

g.Dispose();

}

}

public partial class NewsEventArg : EventArgs

{

public int NewsID = 0;

public string NewsTitle = "";

public NewsEventArg(int newsID,string newsTitle){

NewsID = newsID;

NewsTitle = newsTitle;

}

}

}

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