Gtk.Window.prototype.get_hide_titlebar_when_maximized

function get_hide_titlebar_when_maximized():Boolean {
    // Gjs wrapper for gtk_window_get_hide_titlebar_when_maximized()
}

Returns whether the window has requested to have its titlebar hidden when maximized. See gtk_window_set_hide_titlebar_when_maximized ().

Since 3.4