In desperation made by programming in GTK+ I realized, some of object languages could been implemented in C, but only these not require to made changes in programs in runtime (compiler output).
One of items is automatically cast. For example I declared variable called Button of GtkButton and pass it to function requires GtkWidget. Why do not automatically cast to GtkWidget (like in class hierarchy or conversion operator in C++ or some extra constructors)? But .. it's rather conversion operator. It could looks like: __gcc_parent_type GtkWidget __gcc_parent_type_for GtkButton, GtkLabel, GtkTextView __gcc_parent_type GtkBin __gcc_parent_type_for GtkWindow, GtkBox What do you think? It makes sense, because in this case there's no way to made mistake by avoiding extra conversion. Function expected any of GtkWidget (for example), so passing GtkButton is good. Code would be cleaner, hands will be in better shape and we save programmers time.
