INT 15 - TopView - "LOCATE" - FIND WINDOW AT A GIVEN SCREEN LOCATION
AX = 1018h
BH = column
BL = row
ES = segment of object handle for window below which to search
0000h = start search with topmost window
Return: ES = segment of object handle for window which is visible at the
indicated position, or covered by indicated window
= 0000h no window
SeeAlso: AX=1024h

See also: 151023

151018 - TopView - "LOCATE" - FIND WINDOW AT A GIVEN SCREEN LOCATION