About stopping container to resize on some condition

[jigar]

Hi

I am new in this group. I am using Docking window in my application.
When I dock more than one window to each other. I read that it creates
container for all that panes. Now when I am docking 3-4 windows
horizontally , It create one vertical resizing bar. I want that bar
remove and also remove the facility of resizing on some condition.
but window should not be undocked. It must be in same position and
also I must able to resizing horizontally. Just I want to turn off the
vertical resizing as well as remove vertical bar or make it thinner.

If anyone has any solution. Please mail me on jigar...@gmail.com

Thanks & Regards
Jigar Bhatt