ComponentFactory.Krypton.Docking.KryptonDockingManager.DoDragDrop C# (CSharp) Method

        public virtual void DoDragDrop(Point screenPoint, Point elementOffset, Control c, KryptonDockingFloatingWindow window)
        {
            // Cannot drag a null reference
            if (window == null)
                throw new ArgumentNullException("window");

            // Create a list of all the visible pages inside the floating window
            KryptonPageCollection pages = new KryptonPageCollection();
            KryptonWorkspaceCell cell = window.FloatspaceElement.FloatspaceControl.FirstVisibleCell();
            while (cell != null)
            {
                foreach (KryptonPage page in cell.Pages)
                    if (!(page is KryptonStorePage) && page.LastVisibleSet)
                        pages.Add(page);

                cell = window.FloatspaceElement.FloatspaceControl.NextVisibleCell(cell);
            }

            // If it actually has any visible contents to be moved
            if (pages.Count > 0)
            {
                // Create docking specific drag manager for moving the pages around
                DockingDragManager dragManager = new DockingDragManager(this, null);
                dragManager.FloatingWindow = window.FloatingWindow;
                dragManager.FloatingWindowOffset = elementOffset;

                // Set the window location before it is shown otherwise we see a brief flash as it appears at the
                // existing location and then it moves to the correct location based on the screen mouse position
                dragManager.FloatingWindow.Location = new Point(screenPoint.X - elementOffset.X, screenPoint.Y - elementOffset.Y);

                // Add ourself as a source of drag targets and then begin the dragging process
                dragManager.DragTargetProviders.Add(new DockingDragTargetProvider(this, dragManager.FloatingWindow, pages));
                dragManager.DragStart(screenPoint, new PageDragEndData(this, pages));
            }
        }