Access Closed Panels

With DXDocking for WPF, you can activate a toolbar that displays buttons with closed panel captions. You can press a button to show the corresponding panel. The clicked button disappears and becomes visible only when you close the window.

Note that this toolbar was created using DXBars for WPF. It's available via the toolbar-menu customization window and menus. For instance, end-users can change this bar's visibility by checking/unchecking the corresponding item in the toolbar context menu.