Legacy Syntax#
To maintain compatibility with earlier version of Slint, the pre-1.0 syntax that declared
components and named structs with :=
remains supported:
export MyApp := Window {
//...
}
This syntax change also effects property lookup rules and default element placement.
In components defined in the new syntax, only properties declared within the component are in scope. By default parent elements render their children centered and will apply all layout constraints.
In components defined using old syntax, all properties of bases of self
and
root
were in scope in addition to all properties defined inside the component
itself. Elements are placed at position x: 0
and y: 0
and their constraints
aren’t applied.