Thanks for your interest Tone! Ok everything got magically working after the gtk_menu! It could be a coincidence,or not idk... But what matters is that now i can save files, make shortcuts and have fullscreen(and a very small working menu at the same time if i want )! Mypaint became even more awesome with your help people,thanks again!!!

By the way as i see many of you know very much about mypaint, do you know how to save to *.ora again after i saved to *.jpg ? I tried save as file.ora but it creates a file named file.ora.jpg .I can always save as *.ora before exporting to jpg and then restart mypaint and open the *.ora file and saving format reverts to *.ora again... So its not that important, just kinda useful..