Method OnSuspending

Maple.App/App.cpp:122–141

Invoked when application execution is being suspended. Application state is saved without knowing whether the application will be terminated or resumed with the contents of memory still intact. The source of the suspend request. Details about the suspend request.

/// <param name="sender">The source of the suspend request.</param>
/// <param name="e">Details about the suspend request.</param>
fire_and_forget App::OnSuspending([[maybe_unused]] IInspectable const& sender, [[maybe_unused]] SuspendingEventArgs const& e)
{
    using namespace std::literals::chrono_literals;
    // Save application state and stop any background activity
    const auto saveModifiedContent = std::move(EditPage::SaveModifiedContent);
    const auto saveMonacoModifiedContent = std::move(MonacoEditPage::SaveModifiedContent);
    if (saveModifiedContent == nullptr && saveMonacoModifiedContent == nullptr) {
        co_return;
    }

    const auto& def = e.SuspendingOperation().GetDeferral();
    if (saveModifiedContent != nullptr) {
        co_await saveModifiedContent();
    }
    if (saveMonacoModifiedContent != nullptr)
    {
        co_await saveMonacoModifiedContent();
    }
    def.Complete();
}

/// <summary>
/// Invoked when Navigation to a certain page fails