Check mouse wheel state SFML - c++

Question

In my program I wish to be able to know if the mouse wheel has been scrolled, and if so how much in what direction. Is this possible with C++ and SFML?
So far I have this:
if (sf::Event::MouseWheelEvent().delta != 0)
{
SimulationView.zoom(1 + (10 / sf::Event::MouseWheelEvent().delta));
}
But the second line never exicutes, even when I scroll the mouse wheel

Answer 1

You can read the mouse wheel as part of the event loop that is polled once per frame:
int main()
{
sf::RenderWindow window(sf::VideoMode(320, 256), "Title");
sf::Event event;
while(window.isOpen())
{
while(window.pollEvent(event))
{
if(event.type == sf::Event::Closed)
window.close();
else if(event.type == sf::Event::MouseWheelMoved)
{
// display number of ticks mouse wheel has moved
std::cout << event.mouseWheel.delta << '\n';
}
}
window.clear();
// draw window here
window.display();
}
}
Note: For SFML 2.3
Thanks to #Hiura for pointing out that sf::Event::MouseWheelMoved is deprecated in SFML 2.3.
Use this instead:
if(event.type == sf::Event::MouseWheelScrolled)
{
if(event.mouseWheelScroll.wheel == sf::Mouse::VerticalWheel)
std::cout << "wheel type: vertical" << std::endl;
else if(event.mouseWheelScroll.wheel == sf::Mouse::HorizontalWheel)
std::cout << "wheel type: horizontal" << std::endl;
else
std::cout << "wheel type: unknown" << std::endl;
std::cout << "wheel movement: " << event.mouseWheelScroll.delta << std::endl;
std::cout << "mouse x: " << event.mouseWheelScroll.x << std::endl;
std::cout << "mouse y: " << event.mouseWheelScroll.y << std::endl;
}