blueprint-compiler/tests/samples/variants.blp

using Gtk 4.0;

$BlueprintTestObject {
  // test-one: variant<"s">("one");
  test-zero: variant<"b">(true);
  test-one: variant<"s">("one");
  test-two: variant<"i">(2);
  test-three: variant<"(ii)">((3, 4));
  test-four: variant<"ai">([5, 6]);
  test-five: variant<"{sv}">({"key", <"value">});
  test-six: variant<"a{ss}">({
    "GLib": "2.24",
    "Gtk": "4.16"
  });
  test-seven: variant<"ams">([just "2", nothing]);
}

menu test_menu {
  submenu {
    label: "Test menu";
    item {
      label: "Option 1";
      action: "app.test_menu.set_action";
      target: variant<"y">(1);
    }
    item {
      label: "Option 2";
      action: "app.test_menu.set_action";
      target: variant<"y">(2);
    }
    item {
      label: "Option 3";
      action: "app.test_menu.set_action";
      target: variant<"y">(3);
    }
    item {
      label: "Option 4";
      action: "app.test_menu.set_action";
      target: variant<"y">(4);
    }
  }
}