internal RibbonPanelPopup(RibbonPanel panel) { DoubleBuffered = true; _sensor = new RibbonSensor(this, panel.Owner, panel.OwnerTab); _sensor.PanelLimit = panel; _panel = panel; _panel.PopUp = this; using (Graphics g = CreateGraphics()) { Size s = panel.MeasureSize(this, new RibbonElementMeasureSizeEventArgs(g, GetSizeMode(panel))); //s.Width+=3; s.Height+=3; Size = s; panel.SetBounds(new Rectangle(0, 0, Size.Width, Size.Height)); panel.UpdateItemsRegions(g, GetSizeMode(panel)); } foreach (RibbonItem item in panel.Items) { item.SetCanvas(this); } }