Teek API Documentation

Raised when a DSL build method (ui.button, ui.panel, ui.raw, ui.var, …) is called after the build has already realized - the tree is only ever walked into Tk once, at realize, so anything appended to it afterward would just silently never show up. Use Session#add instead, which builds and realizes a subtree into the already-running app immediately.

Inherits: StandardError

Instance Methods

initialize(msg "the build has already realized - use session.add(parent_name) { } to add widgets to an already-running app instead")

Returns ClosedBuilderError — a new instance of ClosedBuilderError