Int 15 Fn 12  - Topview - Send Message - "erase" - Erase Object            [Q]

   AH = 12h
   BH = 0Eh
   BL = object
       00h handle is DWORD on top of stack
       window:   clear from scroll origin to end of window
       keyboard: discard input
       timer:    cancel current interval
       pointer:  discard all pending messages
       mailbox:  discard all pending messages
       01h clear task's default window from scroll origin to end
       02h discard all queued messages in mailbox (handle on top of stack)
       03h discard all queued messages in current task's default mailbox
       04h discard all input queued to KEYBOARD (handle on top of stack)
       05h discard all input queued to task's default KEYBOARD
       06h remove all objects from OBJECTQ (task's handle on top of stack)
       07h remove all objects from current task's OBJECTQ
       0Ch (DV 2.26+) clear window of task owning handle on top of stack
       0Dh (DV 2.26+) clear default window of parent of current task

Note:  when an OBJECTQ is erased, each object in the OBJECTQ is also erased

See Also: AH=12h/BH=02h