Compare button value
===

I have two buttons in my view.

    [button1 setBackgroundImage:image1 forState:UIControlStateNormal];
    [button2 setBackgroundImage:image2 forState:UIControlStateNormal];

How can I compare two images in these buttons? I'de tried:

    if (button1.imageView.image.CGImage == button2.imageView.image.CGImage)
    {
       NSLog(@"equal");
    }
    else
    {
      NSLog(@"not equal");
    }

It doesn't work :(.

any advice?
thanks for Help
Yayo

