Sets the :sensitive property of the action to @sensitive. Note that this doesn’t necessarily mean effective sensitivity. See gtk_action_is_sensitive() for that.
%TRUE to make the action sensitive
Deprecated: Use g_simple_action_set_enabled() on a #GSimpleAction instead
2.6
See Implementation
Sets the :sensitive property of the action to @sensitive. Note that this doesn’t necessarily mean effective sensitivity. See gtk_action_is_sensitive() for that.