Overriding Virtual Methods In Pygobject

I'm trying to implement the Heigh-for-width Geometry Management in GTK with Python for my custom Widget. My widget is a subclass from Gtk.DrawingArea and draws some parts of an Ima

Solution 1:

You have to name the methods like do_virtual_method:

from gi.repository import Gtk
classPatch(Gtk.DrawingArea):
  def__init__(self):
    super(Patch,self).__init__()

  defdo_get_preferred_width(self):
    print("test")
    return100, 100defdo_get_preferred_height(self):
    print("test")
    return100, 100

win = Gtk.Window()
win.add(Patch())
win.connect('destroy', Gtk.main_quit)
win.show_all()
Gtk.main()

Note that you also have to return the values that the virtual method requires you to return, otherwise you'll get a cryptic error.