c++ - SFML 不会画任何东西？

Question

我习惯于将 SDL 用于 C++，但我听说 SFML 更好，所以我尝试了一下。我试图渲染一个基本的 Sprite ，但没有成功。然后我试图将窗口清除为不同的颜色，但没有用。这是简单的代码，所以发生了什么？ (由于某些原因间距有点偏差，抱歉)

#include <iostream>
#include "SFML/Graphics.hpp"


int main(){

sf::RenderWindow window(sf::VideoMode(640, 480), "It worked");

sf::Texture boxTexture;
boxTexture.loadFromFile("box.png");



while (window.isOpen()){

    window.clear(sf::Color::Blue);

    sf::CircleShape circle;
    circle.setRadius(10);
    circle.setPosition(1, 1);
    circle.setFillColor(sf::Color::Blue);

    window.draw(circle);

    window.display();

}


return 0;
}

所有这一切只是显示一个白色屏幕...它不会将背景更改为蓝色。有谁知道我做错了什么？

Answer 1

就算不需要，也得把事件处理循环放上去。来自 SFML 教程页面:

A mistake that people often make is to forget the event loop, simply because they don't yet care about handling events (they use real-time inputs instead). Without an event loop, the window will become unresponsive. It is important to note that the event loop has two roles: in addition to providing events to the user, it gives the window a chance to process its internal events too, which is required so that it can react to move or resize user actions.

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