[Débutant] Synchronized ListBox objects

Bonjour bonjour,

je soumet un petit probléme que je peux contourner ... mais comme definitivement il y'a quelque chose qui m'echape ...

je veux synchronisé deux listbox qui non pas les même éléments mais qui ont la même taille avec l'event selectedindexchanged je peux deplacer les deux listbox ... sur code project je suis tomber la dessus

Citation:

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Before couple of days I had a task where I must synchronize two ListBox objects. I have fount out, that ListBox object doesn't have any property which allow to accomplish this. After a few hours of googling I found code of class that inherited from ListBox class. Here is the code of that class:
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Code:

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.ComponentModel;
using System.Runtime.InteropServices;
namespace SyncLists
{
    class SyncListBox : System.Windows.Forms.ListBox
    {
        [Category("Action")]
        private const int WM_HSCROLL = 0x114;
        private const int WM_VSCROLL = 0x115;
        public event ScrollEventHandler OnHorizontalScroll;
        public event ScrollEventHandler OnVerticalScroll;
 
        private const int SB_LINEUP = 0;
        private const int SB_LINELEFT = 0;
        private const int SB_LINEDOWN = 1;
        private const int SB_LINERIGHT = 1;
        private const int SB_PAGEUP = 2;
        private const int SB_PAGELEFT = 2;
        private const int SB_PAGEDOWN = 3;
        private const int SB_PAGERIGHT = 3;
        private const int SB_THUMBPOSITION = 4;
        private const int SB_THUMBTRACK = 5;
        private const int SB_PAGETOP = 6;
        private const int SB_LEFT = 6;
        private const int SB_PAGEBOTTOM = 7;
        private const int SB_RIGHT = 7;
        private const int SB_ENDSCROLL = 8;
        private const int SIF_TRACKPOS = 0x10;
        private const int SIF_RANGE = 0x1;
        private const int SIF_POS = 0x4;
        private const int SIF_PAGE = 0x2;
        private const int SIF_ALL = SIF_RANGE | SIF_PAGE | SIF_POS | SIF_TRACKPOS;
        [DllImport("user32.dll", SetLastError = true)]
        private static extern int GetScrollInfo(
        IntPtr hWnd, int n, ref ScrollInfoStruct lpScrollInfo);
 
        private struct ScrollInfoStruct
        {
            public int cbSize;
            public int fMask;
            public int nMin;
            public int nMax;
            public int nPage;
            public int nPos;
            public int nTrackPos;
        }
        protected override void WndProc(ref System.Windows.Forms.Message msg)
        {
            if (msg.Msg == WM_HSCROLL)
            {
                if (OnHorizontalScroll != null)
                {
                    ScrollInfoStruct si = new ScrollInfoStruct();
                    si.fMask = SIF_ALL;
                    si.cbSize = Marshal.SizeOf(si);
                    GetScrollInfo(msg.HWnd, 0, ref si);
                    if (msg.WParam.ToInt32() == SB_ENDSCROLL)
                    {
                        ScrollEventArgs sargs = new ScrollEventArgs(
                        ScrollEventType.EndScroll,
                        si.nPos);
                        OnHorizontalScroll(this, sargs);
                    }
                }
            }
            if (msg.Msg == WM_VSCROLL)
            {
                if (OnVerticalScroll != null)
                {
                    ScrollInfoStruct si = new ScrollInfoStruct();
                    si.fMask = SIF_ALL;
                    si.cbSize = Marshal.SizeOf(si);
                    GetScrollInfo(msg.HWnd, 0, ref si);
                    if (msg.WParam.ToInt32() == SB_ENDSCROLL)
                    {
                        ScrollEventArgs sargs = new ScrollEventArgs(
                        ScrollEventType.EndScroll,
                        si.nPos);
                        OnVerticalScroll(this, sargs);
                    }
                }
            }
            base.WndProc(ref msg);
        }
 
        private void InitializeComponent()
        {
            this.SuspendLayout();
            // 
            // scrolled
            // 
            this.Size = new System.Drawing.Size(120, 95);
            this.ResumeLayout(false);
        }
    }
}

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add two SyncListBox objects (syncListView1 and syncListView2) on the form and add following code:

Code:

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private void syncListView2_OnVerticalScroll(object sender, ScrollEventArgs e)
{
    syncListView1.TopIndex = syncListView2.TopIndex;
}
 
private void syncListView1_OnVerticalScroll(object sender, ScrollEventArgs e)
{
    syncListView2.TopIndex = syncListView1.TopIndex;
}

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et la c'est le drame je vois bien qu'il a crée une classe dérivé de listbox avec les deux scroll ..

alors je tourne sa dans tout les sens mais en recompilant la solution toujours pas d'objet syncListBox qui apparais ...

j'ai bien recopié la classe ... je la remet dans le winform mais impossible d'utilisé un synclistBox

enfer et damnation .. quelqu'un pourrais t'il m'aiguiller ???