private void colorToLibraryButton_Click(object sender, EventArgs e)
        {
            HSVColor [] colors = new HSVColor[4];
            colors[0] = AdjustedColor(0);
            colors[1] = AdjustedColor(1);
            colors[2] = AdjustedColor(2);
            colors[3] = AdjustedColor(3);

            string tilename;
            string colorname;

            TreeNode selectedNode = libraryTreeView.SelectedNode;

            if (selectedNode.Tag != null)
            {
                colorname = selectedNode.Text;
                tilename  = selectedNode.Parent.Text;
            }
            else
            {
                tilename  = Path.GetFileNameWithoutExtension(currentTileName);
                colorname = "";
            }

            using (TileColorPrompt dlg = new TileColorPrompt())
            {
                dlg.TileName  = tilename;
                dlg.ColorName = colorname;
                if (dlg.ShowDialog() == DialogResult.OK)
                {
                    tilename  = dlg.TileName;
                    colorname = dlg.ColorName;

                    library.AddEntry(tilename, colorname, colors);

                    LibraryToTreeview();
                }
            }
        }
        private void colorToLibraryButton_Click(object sender, EventArgs e)
        {
            HSVColor [] colors = new HSVColor[4];
            colors[0] = AdjustedColor(0);
            colors[1] = AdjustedColor(1);
            colors[2] = AdjustedColor(2);
            colors[3] = AdjustedColor(3);

            string tilename;
            string colorname;

            TreeNode selectedNode = libraryTreeView.SelectedNode;
            if (selectedNode.Tag != null)
            {
                colorname = selectedNode.Text;
                tilename = selectedNode.Parent.Text;
            }
            else
            {
                tilename = Path.GetFileNameWithoutExtension(currentTileName);
                colorname = "";
            }

            using (TileColorPrompt dlg = new TileColorPrompt())
            {
                dlg.TileName = tilename;
                dlg.ColorName = colorname;
                if (dlg.ShowDialog() == DialogResult.OK)
                {
                    tilename = dlg.TileName;
                    colorname = dlg.ColorName;

                    library.AddEntry(tilename, colorname, colors);

                    LibraryToTreeview();
                }
            }
        }