SuperPutty.dlgEditSession.buttonImageSelect_Click C# (CSharp) Method

        private void buttonImageSelect_Click(object sender, EventArgs e)
        {
            if (this.imgPopup == null)
            {
                int n = buttonImageSelect.ImageList.Images.Count;
                int x = (int) Math.Floor(Math.Sqrt(n)) + 1;
                int cols = x;
                int rows = x;

                imgPopup = new ImageListPopup();
                imgPopup.BackgroundColor = Color.FromArgb(241, 241, 241);
                imgPopup.BackgroundOverColor = Color.FromArgb(102, 154, 204);
                imgPopup.Init(this.buttonImageSelect.ImageList, 8, 8, cols, rows);
                imgPopup.ItemClick += new ImageListPopupEventHandler(this.OnItemClicked);
            }

            Point pt = PointToScreen(new Point(buttonImageSelect.Left, buttonImageSelect.Bottom));
            imgPopup.Show(pt.X + 2, pt.Y);
        }