Topic       : TOS - The Operating System
Author      : 
Version     : tos.hyp (December 19, 2008)
Subject     : Programmieren/Atari
Nodes       : 3010
Index Size  : 93790
HCP-Version : 5
Compiled on : Atari
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View Ref-File13.3.3  Drag&Drop, Status bytes for                                TOS

The following list contains all the status bytes that may occur within 
a Drag&Drop communication:

#define DD_OK         0    /* OK, - continue                    */
#define DD_NAK        1    /* Abort Drag&Drop                   */
#define DD_EXT        2    /* Data format is not accepted       */
#define DD_LEN        3    /* Request for fewer data            */
#define DD_TRASH      4    /* Destination is a wastebasket icon */
#define DD_PRINTER    5    /* Destination is a printer icon     */
#define DD_CLIPBOARD  6    /* Destination is a clipboard icon   */

All other values are reserved for future purposes.

Note: The status byte DD_EXT is sent when the receiver does not like 
the offered data format. Following this the sender will transmit a new 
header with a different data format, or break off transmission on its 
part. This can be repeated until the sender and receiver have agreed 
on a format, or until it is established that there is no possibility 
of mutual understanding.

See also: Drag&Drop protocol