pub fn ungrab_buttons(&self, handle: xproto::Window) -> Result<()> {
        xproto::ungrab_button(
            &self.conn,
            xproto::ButtonIndex::ANY,
            handle,
            xproto::ModMask::ANY,
        )?;
        Ok(())
    }
Cleans all currently grabbed buttons of a window.
display-servers/x11rb-display-server/src/xwrap/mouse.rs