pub unsafe trait IsA<T: ObjectType>:
ObjectType
+ Into<T>
+ AsRef<T>
+ Borrow<T> { }Expand description
Declares the “is a” relationship.
Self is said to implement T.
For instance, since originally GtkWidget is a subclass of GObject and
implements the GtkBuildable interface, gtk::Widget implements
IsA<glib::Object> and IsA<gtk::Buildable>.
The trait can only be implemented if the appropriate ToGlibPtr
implementations exist.
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.