C#对鼠标滚轮的实现

首先在窗体构造方法，里加入这样一句话

C#代码
1.this.MouseWheel += new System.Windows.Forms.MouseEventHandler(this.panel1_MouseWheel);

C#代码
1.#region 进入窗体时加载 
2.
3.public FormAlarmInfoQuery() 
4.{ 
5.   InitializeComponent(); 
6.   pictureBox1.ImageLocation = "f:\\1.jpg"; 
7.
8.        this.MouseWheel += new System.Windows.Forms.MouseEventHandler(this.panel1_MouseWheel); 
9.        //判断是否已安装带滚轮的鼠标 
10.   //SystemInformation.MouseWheelPresent.ToString(); 
11.   //获取鼠标滚轮在滚动时所获得的行数 
12.   //SystemInformation.MouseWheelScrollLines.ToString(); 
13.   //判断该操作系统是否支持滚轮鼠标 
14.   //SystemInformation.NativeMouseWheelSupport.ToString();  
15.}
16.
17.#endregion
#region 进入窗体时加载

public FormAlarmInfoQuery()
{
InitializeComponent();
pictureBox1.ImageLocation = "f:\\1.jpg";

        this.MouseWheel += new System.Windows.Forms.MouseEventHandler(this.panel1_MouseWheel);
        //判断是否已安装带滚轮的鼠标
//SystemInformation.MouseWheelPresent.ToString();
//获取鼠标滚轮在滚动时所获得的行数
//SystemInformation.MouseWheelScrollLines.ToString();
//判断该操作系统是否支持滚轮鼠标
//SystemInformation.NativeMouseWheelSupport.ToString();
}

#endregion

然后写一个鼠标事件方法

C#代码
1.private void panel1_MouseWheel(object sender, System.Windows.Forms.MouseEventArgs e) 
2.{ 
3.   MessageBox.Show("滚动事件已被捕捉"); 
4.   System.Drawing.Size t = pictureBox1.Size; 
5.   t.Width += e.Delta; 
6.   t.Height += e.Delta; 
7.   pictureBox1.Width = t.Width; 
8.   pictureBox1.Height = t.Height; 
9.}
private void panel1_MouseWheel(object sender, System.Windows.Forms.MouseEventArgs e)
{
MessageBox.Show("滚动事件已被捕捉");
System.Drawing.Size t = pictureBox1.Size;
t.Width += e.Delta;
t.Height += e.Delta;
pictureBox1.Width = t.Width;
pictureBox1.Height = t.Height;
}

如果输出了“滚动事件已被捕捉”，那么鼠标滚轮事件就成功被捕捉了，就可以在在里边写让鼠标滚轮处理的事件了