This function returns the last values passed to
gtk_widget_size_allocate_with_baseline(). The value differs from
the size returned in gtk_widget_get_allocation() in that functions
like gtk_widget_set_halign() can adjust the allocation, but not
the value returned by this function.
If a widget is not visible, its allocated size is 0.
Retrieves the widget’s allocated size.
This function returns the last values passed to gtk_widget_size_allocate_with_baseline(). The value differs from the size returned in gtk_widget_get_allocation() in that functions like gtk_widget_set_halign() can adjust the allocation, but not the value returned by this function.
If a widget is not visible, its allocated size is 0.