SFML 2.1纹理

Question

I want to see if the texture is bigger than 0 pixels(check if it's displayed) like this:

if(image.getSize()>0)

Image is a texture.
I get an error saying this:

error: no match for 'operator>' in 'image.sf::Texture::getSize() > 0'

What does it mean? How can I make it work?(if it's possible)
If it isn't possible, how do I see if the image is there in the texture? I'm using SFML 2.1, and CodeBlocks.
Thanks.

Answer 1

sf::Texture::getSize() returns an sf::Vector2<T> , specifically sf::Vector2u . You should do

sf::Vector2u size = image.getSize();
if(size.x > 0 || size.y > 0) ...

or

if(image.getSize() > sf::Vector2u(0, 0)) ...

Answer 2

我找到了方法：使用if(image.getSize().x>0&&image.getSize().y>0)比较x和y。