C#對鼠標滾輪的實現

首先在窗體構造方法，里加入這樣一句話

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

C#代碼
1.#region 進入窗體時加載 
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.        //判斷是否已安裝帶滾輪的鼠標 
10.   //SystemInformation.MouseWheelPresent.ToString(); 
11.   //獲取鼠標滾輪在滾動時所獲得的行數 
12.   //SystemInformation.MouseWheelScrollLines.ToString(); 
13.   //判斷該操作系統是否支持滾輪鼠標 
14.   //SystemInformation.NativeMouseWheelSupport.ToString();  
15.}
16.
17.#endregion
#region 進入窗體時加載

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

        this.MouseWheel += new System.Windows.Forms.MouseEventHandler(this.panel1_MouseWheel);
        //判斷是否已安裝帶滾輪的鼠標
//SystemInformation.MouseWheelPresent.ToString();
//獲取鼠標滾輪在滾動時所獲得的行數
//SystemInformation.MouseWheelScrollLines.ToString();
//判斷該操作系統是否支持滾輪鼠標
//SystemInformation.NativeMouseWheelSupport.ToString();
}

#endregion

然後寫一個鼠標事件方法

C#代碼
1.private void panel1_MouseWheel(object sender, System.Windows.Forms.MouseEventArgs e) 
2.{ 
3.   MessageBox.Show("滾動事件已被捕捉"); 
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("滾動事件已被捕捉");
System.Drawing.Size t = pictureBox1.Size;
t.Width += e.Delta;
t.Height += e.Delta;
pictureBox1.Width = t.Width;
pictureBox1.Height = t.Height;
}

如果輸出了“滾動事件已被捕捉”，那麼鼠標滾輪事件就成功被捕捉了，就可以在在裏邊寫讓鼠標滾輪處理的事件了