private void dateTimeInput11_MonthCalendar_PaintLabel(object sender, DevComponents.Editors.DateTimeAdv.DayPaintEventArgs e) { DevComponents.Editors.DateTimeAdv.DayLabel day = sender as DevComponents.Editors.DateTimeAdv.DayLabel; if (day == null || day.Date == DateTime.MinValue) { return; } // Cross all weekend days and disable selection for them... if ((day.Date.DayOfWeek == DayOfWeek.Saturday || day.Date.DayOfWeek == DayOfWeek.Sunday) && day.Date != DateTime.Today.AddDays(1)) { day.Selectable = false; // Mark label as not selectable... day.TrackMouse = false; // Do not track mouse movement... e.PaintBackground(); e.PaintText(); Rectangle r = day.Bounds; r.Inflate(-2, -2); SmoothingMode sm = e.Graphics.SmoothingMode; e.Graphics.SmoothingMode = SmoothingMode.AntiAlias; e.Graphics.DrawLine(Pens.Red, r.X, r.Y, r.Right, r.Bottom); e.Graphics.DrawLine(Pens.Red, r.Right, r.Y, r.X, r.Bottom); e.Graphics.SmoothingMode = sm; // Ensure that no part is rendered internally by control... e.RenderParts = DevComponents.Editors.DateTimeAdv.eDayPaintParts.None; } // Mark tomorrows day... else if (day != null && day.Date == DateTime.Today.AddDays(1)) { e.PaintBackground(); e.PaintText(); SmoothingMode sm = e.Graphics.SmoothingMode; e.Graphics.SmoothingMode = SmoothingMode.AntiAlias; Rectangle r = day.Bounds; r.Width--; r.Height--; using (Pen pen = new Pen(Color.FromArgb(128, Color.Blue))) e.Graphics.DrawEllipse(pen, r); e.Graphics.SmoothingMode = sm; // Ensure that no part is rendered internally by control... e.RenderParts = DevComponents.Editors.DateTimeAdv.eDayPaintParts.None; } }