get_visible
Description:
Determines whether the widget is visible.
If you want to take into account whether the widget’s parent is also marked as visible, use [method@Gtk.Widget.is_visible] instead.
This function does not check if the widget is obscured in any way.
See [method@Gtk.Widget.set_visible].
Parameters:
| this | 
           a widget  | 
      
Returns:
| 
           true if the widget is visible  |