[This is preliminary documentation and subject to change.]
Applications use the Still Image API functions to gain access to Still Image features. An application does not need to communicate directly with the Event Monitor, the Control Center, or the Control Panel. The Control Center launches an application that is associated with a device event. That is the only communication that it has with an application. The application gets the launch information it needs by calling the IStillImage::GetSTILaunchInformation function.