Hello orrepova,
Go to the object depository (
http://archicad-talk.graphisoft.com/object_depository.php) and download the window object
Freeformwindow.gsm by Petri. It is a window and will make
a hole in the wall and will show glass, frame (if wanted), etc.
Peter Devlin
P.S. Be sure to follow the instructions on how to use the object.