Whether or not this Widget is currently enabled. Various different kinds
of derived types use this to determine whether or not user input will be
accepted. For example, when `mEnabled == false`, the state of a
CheckBox cannot be changed, or a TextBox will not allow new input.
Whether or not this Widget is currently enabled. Various different kinds of derived types use this to determine whether or not user input will be accepted. For example, when `mEnabled == false`, the state of a CheckBox cannot be changed, or a TextBox will not allow new input.