touches in cocos explanation

I am new to objective C and iPhone game development. I am having some difficulty in understanding the code of to implement touches in cocos. Could anyone give me some explanation please?

-(BOOL)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)events
{

    UITouch *touch = [touches anyObject];
    CGPoint location = [touch locationInView: [touch view]];
    CGPoint convertedLocation = [[Director sharedDirector] convertCoordinate:开发者_如何学Pythonlocation];
    lady.position = convertedLocation;

    return kEventHandled;
}

Please explain me these punch of code. I would like to know how it works one line by one line. Thanks in advance

UITouch ref http://developer.apple.com/iphone/library/documentation/UIKit/Reference/...

Example code that uses UITouch

You can probably google for more

It looks like standard UITouch handling code.

• get any touch even from set of touches sent in the even
• get the location in given view - e.g. the location in view coordinates starting from 0,0 in the corner of this specific view
• then convert to 'Director' coordinates which is a shared object ... (no idea what object but you get the idea what they are doing)
• set position of something (lady) to the location of the touch event