private void objTilePanel_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
        {
            Graphics Gfx = e.Graphics;

            if (objSetList.Items.Count < 1)
            {
                return;
            }

            int lIndex = mlSelectedTileSet;

            if (lIndex < 0)
            {
                return;
            }

            cTileSet TSetData  = (cTileSet)mlstTileSets[lIndex];
            int      lTileSize = TSetData.mlTileSize;

            int lX = 0, lY = 0, lCount = 0;

            //Note lY at start should depend on the scroller!
            foreach (cTileData TData in TSetData.mlstTileData)
            {
                bool bHighLight = mlSelectedTile == lCount;
                TData.Draw(Gfx, lX, lY, true, bHighLight, 0);

                lX += lTileSize;
                if (lX >= objTilePanel.Width)
                {
                    lX  = 0;
                    lY += lTileSize;
                }
                lCount++;
            }
        }