Int 15 Fn 12  - Topview - Send Message - "redraw" - Redraw Window          [Q]

   AH = 12h
   BH = 13h
   BL = window object
       00h DWORD on top of stack is handle for window to redraw
       01h redraw task's default window
       0Ch (DV 2.26+) redraw window of task owning handle on top of stack
       0Dh (DV 2.26+) redraw default window of parent of current task

See Also: AH=12h/BH=05h"WINDOW",AH=12h/BH=0Eh