Need help for finding Main Form of #D Interface

Hi,

I was going to theme SharpDevelop for my own personal use (just for fun! :D) to be more like VS2013 with some components (like custom forms, custom toolbars, custom sidebars, etc.) but I can't find the instance of System.Windows.Forms.Form for the main window!

Also, I don't know (can't find out!) whether #D is a WPF app or a WinForms app!

Can someone help me with these?

Thanks.