Returns the widget state as a flag set. It is worth mentioning
that the effective GTK_STATE_FLAG_INSENSITIVE state will be
returned, that is, also based on parent insensitivity, even if
widget itself is sensitive.
Also note that if you are looking for a way to obtain the
GtkStateFlags to pass to a gtk.StyleContext method, you
should look at Style.contextGetState.
The state flags for widget