Contractable GroupBox

Contractable GroupBox. This is a custom control I created from scratch in C#. It is a GroupBox that collapses and expands when a treeview like "+-" interface is clicked. It is not complete, but it is fully functional and good enough to use in any app as long as I get credit for it of course. You should have an understanding of GDI+ and component creation in order to fully get this. I however am obsessed with commenting my code, so just reading it will help you understand everything I did while writing the control. Enjoy it! Ramon E. Tristani