How to make scroll event for ListView

Question

I want to make an event for the scroll in ListView.

I have found something that works, but it only fires the event when using the scrollbar. It does not respond to scro

Answer 1

I have found the other constants for making the scroll on the down arrow key and the end key on the keyboard.this is the code for the CustomListView

using System;
using System.Windows.Forms;

class MyListView : ListView
{
    public event ScrollEventHandler Scroll;
    private const int WM_HSCROLL = 0x114;
    private const int WM_VSCROLL = 0x115;
    private const int MOUSEWHEEL = 0x020A;
    private const int KEYDOWN = 0x0100;

    protected virtual void OnScroll(ScrollEventArgs e)
    {
        ScrollEventHandler handler = this.Scroll;
        if (handler != null) handler(this, e);
    }
    protected override void WndProc(ref Message m)
    {
        base.WndProc(ref m);
        if (m.Msg == MOUSEWHEEL || m.Msg == WM_VSCROLL || (m.Msg == KEYDOWN && (m.WParam == (IntPtr)40 || m.WParam == (IntPtr)35)))
        {
            // Trap WM_VSCROLL 
            OnScroll(new ScrollEventArgs((ScrollEventType)(m.WParam.ToInt32() & 0xffff), 0));
        }
    }
}

Answer 2

The mouse wheel m.Msg value should be:

private const int WM_MOUSEWHEEL = 0x020A;