using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using DrawingEx;
using System.Drawing;
using System.Drawing.Drawing2D;

namespace substx
{
    class DesignListBox : ListBox
    {
        public DesignListBox()
        {
            base.SetStyle(ControlStyles.OptimizedDoubleBuffer |
                          ControlStyles.ResizeRedraw |
                          ControlStyles.AllPaintingInWmPaint,
                          true);

            // DoubleBuffered = true; <-- nutzt auch nix WAH!!!
            base.DrawMode = DrawMode.OwnerDrawFixed;
        }

        protected override void OnDrawItem(DrawItemEventArgs e)
        {

            Rectangle bnd = e.Bounds;
            Graphics dc = e.Graphics;
            ColorTable ct = (ColorTable)Items[e.Index];
            int pad = 6;
            int pwh = bnd.Height - 2 * pad;
            Rectangle pi0 = new Rectangle(bnd.X + pad, bnd.Y + pad, pwh, pwh);
            Rectangle pi1 = new Rectangle(bnd.X + pi0.Right + pad, bnd.Y + pad, pwh, pwh);
            Rectangle pi2 = new Rectangle(bnd.X + pi1.Right + pad, bnd.Y + pad, pwh, pwh);
            Rectangle pi3 = new Rectangle(bnd.X + pi2.Right + pad, bnd.Y + pad, pwh, pwh);

            if (ct == null)
            {
                #region Error
                dc.FillRectangle(new SolidBrush(BackColor), bnd);
                StringFormat sf = new StringFormat();
                sf.LineAlignment = StringAlignment.Center;
                sf.Alignment = StringAlignment.Center;
                dc.DrawString("Error Item.", Font, new SolidBrush(Color.Red), bnd, sf);
                #endregion
            }
            else
            {
                #region Preview
                dc.SetColorTableWindowsVista(ct);
                dc.FillRectangle(new SolidBrush(ct.Background), bnd);
                dc.DrawVistaButtonBackground(pi0, 2, true, false, false);
                dc.DrawVistaButtonBackground(pi1, 2, true, true, false);
                dc.DrawVistaButtonBackground(pi2, 2, true, false, true);
                dc.DrawVistaButtonBackground(pi3, 2, true, true, true);

                Rectangle capt = bnd; capt.X += 8; capt.Width -= 8;
                StringFormat sf = new StringFormat();
                sf.LineAlignment = StringAlignment.Center;
                dc.DrawString(ct.Name + ((ct == Design.ColorTable) ? " (Aktiv)" : ""), Font, new SolidBrush(ct.Text), capt, sf);
                #endregion
            }

            if ((e.State & DrawItemState.Selected) == DrawItemState.Selected)
            {
                #region Selection
                Rectangle sel = bnd;
                Rectangle selhalf;
                Color selcl = Color.CornflowerBlue;

                sel.Inflate(-2, -2);
                using (GraphicsPath psel = RoundedRectangle.Create(sel, 2))
                {
                    using (Pen selouter = new Pen(Color.FromArgb(75, selcl)))
                    {
                        dc.DrawPath(selouter, psel);
                    }
                }
                sel.Inflate(-1, -1);
                selhalf = sel;
                selhalf.Height /= 2;
                using (GraphicsPath psel = RoundedRectangle.Create(selhalf, 2,
                    RoundedRectangle.RectangleCorners.TopLeft &
                    RoundedRectangle.RectangleCorners.TopRight))
                {
                    selhalf.Height++;
                    using (LinearGradientBrush lgb = new LinearGradientBrush(
                        selhalf, Color.FromArgb(150, selcl), Color.Transparent, 90f))
                    {
                        dc.FillPath(lgb, psel);
                    }
                }
                using (GraphicsPath psel = RoundedRectangle.Create(sel, 2))
                using (Pen selinner = new Pen(Color.FromArgb(150, selcl)))
                {
                    dc.DrawPath(selinner, psel);
                }
                #endregion
            }
        }
    }
}

private Brush _myBrush;

private Brush MyBrush
{
  get
  {
    if (this._myBrush == null)
      this._myBrush = this.CreateMyBrush();

      return this._myBrush;
  }
}

//Bei Änderungen aufrufen
private void ResetMyBrush()
{
  if (this._myBrush != null)
    this._myBrush.Dispose();
  this._myBrush = null;
}
private Brush CreateMyBrush()
{
   return new SolidColorBrush(this.MyColor);
}

if (selected)
    dc.DrawImage(selectedImages[idx])
else
    dc.DrawImage(itemImages[idx])