pub const FOREIGN_RESOURCE: &'static str;Expand description
A FontId / ImageId / SoundId registered in one Session and used
through a core of another. Handles are unique to the process, so it
cannot resolve to somebody else’s resource; it behaves as a removed
handle does (draws nothing, shapes as sans-serif, plays nothing), which
from outside looks like the resource never registered. Two
Core::new()s are two sessions; windows that share resources are built
with Core::new_in against one Session.