SFML错误-isOpen非标准语法；

Question

So I am getting this error: game.cpp(15): error C3867: 'sf::Window::isOpen': non-standard syntax; use '&' to create a pointer to member game.cpp(15): error C3867: 'sf::Window::isOpen': non-standard syntax; use '&' to create a pointer to member

Game.cpp

#include "Game.h"
#include <SFML/Graphics.hpp>
#include <SFML/Window.hpp>

Game::Game() :
    window(sf::VideoMode(200, 200), "SFML works!"),
    player() 
{ 
    player.setRadius(40.f);
    player.setPosition(100.f, 100.f);
    player.setFillColor(sf::Color::Cyan);
}

void Game::run() {
    while (window.isOpen) {
        processEvents();
        update();
        render();
    }
}

void Game::processEvents()
{
    sf::Event event;
    while (window.pollEvent(event)) {
        if (event.type == sf::Event::Closed)
            window.close();
    }
}

void Game::update() {

}

void Game::render() {
    window.clear();
    window.draw(player);
    window.display();
}

And this is my game.h

#include <SFML/Graphics.hpp>
#include <SFML/Window.hpp>

class Game {
public:                         
    Game();        
    void run();
    sf::RenderWindow window;
    sf::CircleShape  player;
private:        
    void processEvents();        
    void update();        
    void render();
};

I have no idea what I am doing wrong, I looked trough other stackoverflow answers to the same error but they are all general and they do not help me fix this error because its from the SFML library. If someone know how to fix it please help me :)

Answer 1

Here while (window.isOpen) you are testing that the member function pointer 'window.isOpen' is not nullptr . What you intended was to call the function while (window.isOpen()) .