[ Version ( since = "2.10" ) ]
public void set_deletable (bool setting)
By default, windows have a close button in the window frame.
Some window managers allow GTK+ to disable this button. If you set the deletable property to false using this function, GTK+ will do its best to convince the window manager not to show a close button. Depending on the system, this function may not have any effect when called on a window that is already visible, so you should call it before calling show.
On Windows, this function always works, since there’s no window manager policy involved.
| this |
a Window |
| setting |
true to decorate the window as deletable |