如何关联在SFML-IMGUI中创建的按钮？

#include <SFML/Graphics.hpp>
#include <imgui.h>
#include <imgui-SFML.h>

void handleButtonClick()
{
    // 处理按钮点击事件的函数
    // 在这里执行相应的操作
}

int main()
{
    sf::RenderWindow window(sf::VideoMode(800, 600), "SFML-IMGUI Button Example");
    ImGui::SFML::Init(window);

    bool buttonPressed = false;

    while (window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
            ImGui::SFML::ProcessEvent(event);

            if (event.type == sf::Event::Closed)
                window.close();
        }

        ImGui::SFML::Update(window, sf::seconds(1.0f / 60.0f));

        ImGui::Begin("Button Example");

        if (ImGui::Button("Click Me"))
        {
            buttonPressed = true;
            handleButtonClick();
        }

        ImGui::End();

        window.clear();
        ImGui::SFML::Render(window);
        window.display();
    }

    ImGui::SFML::Shutdown();

    return 0;
}