Category: <b>DESQview/TopView and Quarterdeck programs</b>
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<pre><b>INT 15 - TopView - SEND MESSAGE - "EOF" - GET OBJECT EOF STATUS</b>

	AH = 12h
	BH = 10h
	BL = object
	    00h handle is DWORD on top of stack
		window: return TRUE if logical cursor past end of window
		mailbox: ???
	    01h returns TRUE if logical cursor past end of task's def window
	    02h return ??? for task's mailbox (task's handle on top of stack)
	    03h return ??? for current task's mailbox
	    0Ch (DV 2.26+) check log crsr of window owning handle on top of stk
	    0Dh (DV 2.26+) check log cursor of window of parent task
Return: DWORD on top of stack is status (any handle on stack has been popped)
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