taron: Does the window title update, removing the '*', indicating that a save took place? Or does it simply do nothing?
The implementation is a bit unintuitive, in that the button will act as Ctrl+S - i.e. it will overwrite the currently open file if there is one. You have to use Ctrl+Shift+S (or Shift+GUI button) to get the file selector. I actually changed the code just now, making the graphical button always trigger the save as dialog. I hope you haven't overwritten any files you didn't mean to
Oh, it's far more common, comfortable and secure to have the button open the dialog. I'm happy we've caught that, hehe. I'm not sure, if I overwrote something, but even then...I've just doodled about, nothing to lose!