how to add data in gui?

I want add data dynamically to GUI list box like below.

1.Matlab
   1.1 Arrays.
   1.2 Vectors.
2.Simulink
   2.1 Logical blocks
   2.2 Arithmetic blocks

The data structure should be like word document with main section and sub-sections

Please help me in this.

Answer 1

[Walter Roberson]

uicontrol('style','list') does not support that.

You might be able to use the undocumented function uitree() and uitreenode()