Creating The Tiles From C++

What we'll do is take the list of tiles declared in the .slint language, duplicate it, and shuffle it. We'll do so by accessing the memory_tiles property through the C++ code. For each top-level property, a getter and a setter function is generated - in our case get_memory_tiles and set_memory_tiles. Since memory_tiles is an array in the .slint language, it is represented as a std::shared_ptr<slint::Model>. We can't modify the model generated by the .slint, but we can extract the tiles from it, and put it in a slint::VectorModel which inherits from Model. VectorModel allows us to make modifications and we can use it to replace the static generated model.

We modify the main function like so:

// ...

#include <random> // Added

int main()
    auto main_window = MainWindow::create();
    auto old_tiles = main_window->get_memory_tiles();
    std::vector<TileData> new_tiles;
    new_tiles.reserve(old_tiles->row_count() * 2);
    for (int i = 0; i < old_tiles->row_count(); ++i) {
    std::default_random_engine rng {};
    std::shuffle(new_tiles.begin(), new_tiles.end(), rng);
    auto tiles_model = std::make_shared<slint::VectorModel<TileData>>(new_tiles);


Running this gives us a window on the screen that now shows a 4 by 4 grid of rectangles, which can show or obscure the icons when clicking. There's only one last aspect missing now, the rules for the game.