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/*
$Id: keep_alive.h,v 1.8 2001/09/22 15:52:11 plasmoid Exp $
------------------------------------------------------------------------
ClanLib, the platform independent game SDK.
This library is distributed under the GNU LIBRARY GENERAL PUBLIC LICENSE
version 2. See COPYING for details.
For a total list of contributers see CREDITS.
See http://www.clanlib.org
------------------------------------------------------------------------
*/
//! clanCore="System"
//! header=core.h
#ifndef header_keepalive
#define header_keepalive
//: Keep alive callback interface.
//- <p>If you want to add something that gets called in a
//- CL_System::keep_alive() call, inherit this class and create an instance
//- of it.</p>
class CL_KeepAlive
{
public:
//! Construction:
//: Constructs and registers the object as a keep_alive listener.
CL_KeepAlive();
//: Unregisters the object as a keep_alive listener.
virtual ~CL_KeepAlive();
//! Operations:
//: Called when CL_System::keep_alive() is called.
virtual void keep_alive()=0;
};
#endif
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