How to trigger scroll event of a FlowLayoutPanel?-CodePudding

Here's my code:

public partial class Form1 : Form {

  public Form1() {
    InitializeComponent();

    for (int i = 0; i < 10; i  ) {
      Button btn = new Button();
      btn.Text = "TEST";
      btn.Height = 35;

      this.flowLayoutPanel1.Controls.Add(btn);
    }

    this.flowLayoutPanel1.AutoScroll = true;
    this.flowLayoutPanel1.Scroll  = FlowLayoutPanel1_Scroll;
  }

  private void FlowLayoutPanel1_Scroll(object sender, ScrollEventArgs e) {
    MessageBox.Show("Event Triggered");
  }
}

And here's what the UI look like:

The scroll event just seems not be triggered while I scroll with mouse wheel inside the flowlayoutpanel

The solution shouldn't be hard to find, however I stuck on it for hours.. Can anyone point me some directions? Thanks!!

CodePudding user response：

there is a special MouseWheel event that captures this

flowLayoutPanel1.MouseWheel  = FlowLayoutPanel1_MouseWheel;

private void FlowLayoutPanel1_MouseWheel(object sender, MouseEventArgs e)
{
    Console.WriteLine("Scrolling Wheel");
}