slide inside a button - touchdraginside

Question

Hi all!

I got an touchdraginside-action which is connected in IB with a button.

-(IBAction)slide {

}

How can i check the start touch point in my button and how long the finger slides in this button? Can anybody help me, please?

With this code a can check the touch in my view... But i dont know how this works with a button?

-(void)touchesBeganNSSet *)touches withEventUIEvent *)event {


    UITouch *touch =[touches anyObject];
    gestureStartPoint =[touch locationInView:self.view];

}

Thank you for replies!