Simple Popup Control

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using PopupControl;

namespace MoreComplexPopup
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();

            /*PopupComboBox pcb = new PopupComboBox();
            pcb.DropDownControl = new ComplexPopup();
            Controls.Add(pcb);*/

            gridToolTip = new Popup(gridCustomToolTip = new CustomToolTip());
            gridToolTip.AutoClose = false;
            gridToolTip.FocusOnOpen = false;
            toolTip = new Popup(customToolTip = new CustomToolTip());
            toolTip.AutoClose = false;
            //toolTip.FocusOnOpen = false;
            complex = new Popup(complexPopup = new ComplexPopup());
            complex.Resizable = true;
            complexPopup.ButtonMore.Click += delegate(object _sender, EventArgs _e)
            {
                ComplexPopup cp = new ComplexPopup();
                cp.ButtonMore.Click += delegate(object __sender, EventArgs __e)
                {
                    new Popup(new ComplexPopup()).Show(__sender as Button);
                };
                new Popup(cp).Show(_sender as Button);
            };

            dataGridView.Columns.Add("col1", "col1");
            dataGridView.Columns.Add("col2", "col2");
            dataGridView.Columns.Add("col3", "col3");

            dataGridView.Rows.Add("1", "A", "!");
            dataGridView.Rows.Add("2", "B", "@");
            dataGridView.Rows.Add("3", "C", "#");
            dataGridView.CellMouseEnter += new DataGridViewCellEventHandler(dataGridView_CellMouseEnter);
            dataGridView.CellMouseLeave += new DataGridViewCellEventHandler(dataGridView_CellMouseLeave);
            dataGridView.CellMouseMove += new DataGridViewCellMouseEventHandler(dataGridView_CellMouseMove);
        }

        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new MainForm());
        }

        void dataGridView_CellMouseMove(object sender, DataGridViewCellMouseEventArgs e)
        {
            gridCustomToolTip.Controls[0].Text = "Mouse pointer location: " + e.Location.ToString();
        }

        void dataGridView_CellMouseLeave(object sender, DataGridViewCellEventArgs e)
        {
            gridToolTip.Close();
        }

        void dataGridView_CellMouseEnter(object sender, DataGridViewCellEventArgs e)
        {
            gridCustomToolTip.Controls[1].Text = string.Format("Column: {0}, Row: {1}", e.ColumnIndex, e.RowIndex);
            if (!gridToolTip.Visible)
            {
                Rectangle rect = dataGridView.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex, true);
                rect.X += 32;
                rect.Y += 32;
                gridToolTip.Show(dataGridView, rect);
            }
        }

        Popup toolTip;
        CustomToolTip customToolTip;
        Popup gridToolTip;
        CustomToolTip gridCustomToolTip;
        Popup complex;
        ComplexPopup complexPopup;

        private void buttonDropDown_Click(object sender, EventArgs e)
        {
            complex.Show(sender as Button);
        }

        private void label1_MouseHover(object sender, EventArgs e)
        {
            toolTip.Show(label1);
        }

        private void label1_MouseLeave(object sender, EventArgs e)
        {
            toolTip.Close();
        }
    }
}