License Question

["Surya Kiran Gullapalli" <suryakiran gullapalli gmail com>]

Hi all.
We're planning to develop an application in gtkmm, for that i need to clarify license issue.
As our application is commercial, I'd like to know whether we can release closed-source application using gtk/gtkmm application. If so, what all things i need to consider.

This application will be on both linux and windows. So can i ship gtk/gtkmm libraries with the application ?

Thanks in advance,
Surya