How to update UI when vector is trimmed/edited ?

[IrfanKhan66]

How do I update the UI that is populated based on vector. I have a std::vector and using for-loop I made Buttons from it and gave each button a lambda function to edit the vector based on the index of the button, the lambda function erases the vector from vec.begin() to vec.begin() + i. When I click on a button the program gets hanged, how do I update the ui ? can anyone write an example for this ? @ArthurSonzogni

[ArthurSonzogni]

Hello @IrfanKhan66,

It hangs because of memory safety. You can't modify the component tree while we are executing it.

Maybe you can post a new task to avoid delay execution?

auto button = Button("Click", [&] {
  screen->Post([&] {
    // Execute the task on the next loop iteration.
    component_tree->Add(...)
  });
});