Events when the window is not focused

[Yoninde]

Hello. My question is, how make an event - event->type == sf::Event::TextEntered, when window is not focused? If I can't do this, can I use sf::Keyboard::isKeyPressed like a TextEntered, don't write like:
if( sf::Keyboard::isKeyPressed( sf::Keyboard::W ) ) text += "W";
but like in TextEntered,
text += static_cast<char>( event->text.unicode );

[Laurent]

No, you can't. But there's hardly any reason to process text events in a non-focused window. And SFML is not the right tool for writing a key logger.