public ToolStripOptionsToolbarSection(ListControl listControl)
: base(listControl)
{
_listControl = listControl;
_toolStrip = new ToolStrip();
_toolStrip.AutoSize = true;
_toolStrip.Visible = false;
_toolStrip.Anchor = AnchorStyles.None;
_toolStrip.Dock = DockStyle.None;
_toolStrip.GripStyle = ToolStripGripStyle.Hidden;
_toolStrip.TabIndex = 0;
_toolStrip.Text = "List options";
_toolStrip.CanOverflow = true;
_toolStrip.Renderer = new MyRenderer();
_toolStrip.BackColor = Color.Transparent;
_toolStrip.Layout += _toolStrip_Layout;
AddDefaultToolStripButtons();
_toolStrip.CreateControl();
listControl.Controls.Add(_toolStrip);
listControl.Columns.GroupedItems.DataChanged += GroupedItems_DataChanged;
HandleEnablingGroupButtons();
}