Can I use the docking feature without tab feature?

Now I need a layout system to allow user to put multiple WPF conent on the screen, dock them and resize them.

I have found that ToolWindow and ToolWindowContainer's sample quite close to satisfying my need. But to me it seems that ToolWindowContainer works like a TabControl and ToolWindow like a Tab.  But I don't want my ContentControls reside within a tab(or put it this way: I want ToolWindowContainer accepts only one TooWindow, so user will not see an invisible ToolWindow's header appear after the current ToolWindow header), and when user dragging the header of a ToolWindow, trying to dock it, I don't want that multi-tab icon in the middle of that popped-up dock signs. 

How can I achieve that with any classes in Actipro's Docking namespace?