Structs and Enums

Structs

Define named structures using the struct keyword:

export struct Player  {
    name: string,
    score: int,
}

export component Example {
    in-out property<Player> player: { name: "Foo", score: 100 };
}

slint

The default value of a struct, is initialized with all its fields set to their default value.

Anonymous Structures

Declare anonymous structures using { identifier1: type1, identifier2: type2 } syntax, and initialize them using { identifier1: expression1, identifier2: expression2 }.

You may have a trailing , after the last expression or type.

export component Example {
    in-out property<{name: string, score: int}> player: { name: "Foo", score: 100 };
    in-out property<{a: int, }> foo: { a: 3 };
}

slint

Enums

Define an enumeration with the enum keyword:

export enum CardSuit { clubs, diamonds, hearts, spade }

export component Example {
    in-out property<CardSuit> card: spade;
    out property<bool> is-clubs: card == CardSuit.clubs;
}

slint

Enum values can be referenced by using the name of the enum and the name of the value separated by a dot. (eg: CardSuit.spade)

The name of the enum can be omitted in bindings of the type of that enum, or if the return value of a callback is of that enum.

The default value of each enum type is always the first value.