public MapLayoutNode(Act2DMapLayoutObject layout, FormActFile form)
        {
            this.layout = layout;
            this.form = form;

            this.Text = "Layout";
            this.ImageIndex = 4;
            this.SelectedImageIndex = 4;
        }
        public CodeNode(CodeObject code, FormActFile form)
        {
            this.code = code;

            this.Text = "Code";
            this.ImageIndex = 6;
            this.SelectedImageIndex = 6;
            this.ContextMenuStrip = form.ContextMenuCode;
        }
        public LayerNode(ActLayerObject layer, FormActFile form)
        {
            this.layer = layer;
            this.form = form;

            this.Text = layer.properties.stName;
            this.ImageIndex = 1;
            this.SelectedImageIndex = 1;
            this.ContextMenuStrip = form.ContextMenuLayer;

            ResetChildren();
        }
        public FileNode(ActObject file, FormActFile form)
        {
            this.file = file;
            this.form = form;

            this.Text = "File";
            this.ImageIndex = 0;
            this.SelectedImageIndex = 0;
            this.ContextMenuStrip = form.ContextMenuFile;

            this.ResetChildren();

            this.ExpandThis();
        }