Docking Window

[Shree]

I need to create a window that docks to the right of the desktop, pushing all existing windows to the left. One solution is to use a desk band, but it has some undesirable features, such as, another desk band can come and merge into mine. Is there a way to make a custom window behave like the desk band, or to make restrictions to the deskband such that it can be docked only on the right, and no other deskbands can be merged into it? Thanks.