Resize 3 controls

Hello, I have a control with three windows in it, one text box, one treeview, and one listview, I have them in the following order:

+--------------+----------------------------------------+
| Treeview1  | Listview1                                     |
|                  |                                                   |
|                  |                                                   |
|                  |                                                   |
|                  |                                                   |
|                  |                                                   |
|                  +----------------------------------------|
|                  | Text1                                          |
|                  |                                                   |
|                  |                                                   |
|                  |                                                   |
+--------------+----------------------------------------+

I want to be able to resize them on the form by clicking on there border, like for instance if i want to make treeview bigger, i just have to click on its left border and thats the same border as the lisview1 & text1 left borders, it would resize them too and make them smaller.  Next I would like to do the same with listview1's bottom border by making it bigger or smaller, it would change the size of text1 also when doing this.

Sorry to confiuse you, but if you have any questions let me know.