[ Flags ]
public enum InputHints
Describes hints that might be taken into account by input methods or applications.
Note that input methods may already tailor their behaviour according to the `GtkInputPurpose` of the entry.
Some common sense is expected when using these flags - mixing gtk_input_hint_lowercase with any of the uppercase hints makes no sense.
This enumeration may be extended in the future; input methods should ignore unknown values.