How to get the docked direction.

Hi,

Suppose i have the toolwindow1 in docksite1 of the main application and as i drag the toolwindow1 from teh doocksite1 and docked into the right direction of the same docksite,So How to get that docked right  direction.

Like There is an API toolwindow1.GetDirectionRelativeToWorkspace().But its works only for relative to workspace. not relative to the  docksite.

Problem 2: Is there any way to restrict that toolwindow1 should not be docked into the its own docksite1 when i drag the toolwindow1 from the docksite1 and it should docked to teh other linked docksite.