sorry for that,
For a toolwindow docking ,we get the bars such as left ,right, top,bottom and fill.I mean this are the
available options for docking a tool window.
But for an tabbed window.i dont ge the left ,right, top,bottom ,the center screen option only i am getting.
Only problem is i cannot attach the file.
I will try to explain.
please click the below link.
the first image in the link is my requirement for an tabbed document.not for tool window.