Fullscrean falling

[CreaM]

Hello, this is code cut off my game - strange thing is that fullscrean sometimes (randomly) falls. Sometimes it stays windowed, sometimes it falls to window and then resize back to fullscrean...

while (window.isOpen())
        {
                sf::Event event;
                while (window.pollEvent(event)){
                        if (event.type == sf::Event::Closed)window.close();
                        if (event.key.code == sf::Keyboard::F4)window.create(sf::VideoMode(800, 650), "My window", sf::Style::Fullscreen);
                        if (event.key.code == sf::Keyboard::Escape)window.create(sf::VideoMode(800, 650), "My window", sf::Style::Default);
                }
 

is there a mistake in code? , is good idea to use events for this? Any ideas?
Thanks for replies.

[AlejandroCoria]

You have to check if the event type is KeyPressed or KeyRelease before seeing what the key code.

[Hapax]

Aside from failing to check the correct type before attempting read the key code as AlejandroCoria already mentioned, your resolution is not a typical monitor resolution so could be failing to create fullscreen as the monitor doesn't have the mode available.
Maybe try this test.

[AlejandroCoria]

Wow, I completely overlooked that

[CreaM]

Oh, 800 x 650 isnt a valid mode, stupid mistake...
Thank you for solving it.