Virtual function called when the widget needs to re-apply its theme.
This may be called when the object is first created, or whenever the widget is modified in any way that may require a reload of the theme. This may include but is not limited to scale, theme, or mirrored mode changes.
Since 1.22
Overridden from Efl.Ui.Widget.theme_apply.
theme_apply @protected { return: Eina.Error; }
Eina_Error efl_ui_widget_theme_apply(Eo *obj);