c# - How to capture mouse wheel on panel?

Question

How to capture mouse wheel on panel in C#? I'm using WinForms

EDIT:

I try to do it on PictureBox now.

My code:

this.pictureBox1.MouseClick += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseClick);    
this.pictureBox1.MouseWheel += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseClick);
private void pictureBox1_MouseClick(object sender, MouseEventArgs e)  
  {  
    MessageBox.Show("Click");  
  }

Clicking works. Wheelling doesn't. Why?

Answer 1

If you can't see the "MouseWheel" event on a component, then you need to create it manually. Also, we need to focus that component, otherwise the "MouseWheel" event will not work for that component. I will show you how to create a "MouseWheel" event for "pictureBox1" and how it works.

1. INSIDE THE CONSTRUCTOR, create a mousewheel event on that component.

   InitializeComponent();
   this.pictureBox1.MouseWheel += pictureBox1_MouseWheel;
   

2. CREATE THE FUNCTION manually. According to my example, call it "pictureBox1_MouseWheel"

   private void pictureBox1_MouseWheel(object sender, MouseEventArgs e)
   {
       //you can do anything here
   }
   

3. CREATE a MouseHover event on that component (Go to properties in PicureBox1, select event, locate "MouseHover" and double-click the "MouseHover" event).

4. CALL "Focus()"; method inside that MouseHover event.

   pictureBox1.Focus();
   

5. Now run the program.