doing more with UIImagePicker ?

[dnite]

I'm just learning Objective-C, Cocoa and Cocoa Touch. I'm new to all 3 and have been reading and am finally starting to grasp the concepts.. I'm curious, though.. The UIImagePickerController offers 2 delegates. One for when the image is accepted completely and another for when the user cancels.. Can anyone explain to me how the developers of the camera apps that let you take a picture on a timer work? How are these applications catching this event if it's not offered up by the delegate? I'm thinking if I can understand how that works it will give me a much better understanding at how the Cocoa frameworks work under all the glitz that Apple puts into them to make them squeaky clean and easy to use.. Thanks in advance!

[dnite]

Anyone have any ideas on this? I'm just trying to grasp what's going on underneath all the code to get a better understanding of how the frameworks are working. Being able to modify a built in view and what the camera's take picture button does (i.e. wait x seconds before taking a picture) would shed a little more light on this for me.. Thanks again!