5.8.3 List-Box Notification Codes

The following notification codes apply only to list-box controls that have LBS_NOTIFY style:

Message Description  
LBN_DBLCLK Sent when the user double-clicks a string with the mouse.  
LBN_ERRSPACE Sent when the system is out of memory.  
LBN_KILLFOCUS Indicates that a list box has lost input focus.  
LBN_SELCHANGE Sent when the selection has been changed.  
LBN_SETFOCUS Indicates that the list box has received input focus.