Category: <b>DESQview/TopView and Quarterdeck programs</b>
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<pre><b>INT 15 - TopView - "GETBUF" - GET VIRTUAL SCREEN INFO</b>

	AX = 1024h
	BX = segment of object handle for window (0000h = use default)
Return: ES:DI -&gt; virtual screen
	CX = size of virtual screen in bytes
	DL = screen type
	    00h text screen
	    01h graphics screen
SeeAlso: INT 10/AH=FEh,INT 21/AH=2Bh/CX=4445h
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