INT 15 - DESQview v2.50+ - "VIDEONOTIFY" - HAS DIRECT WINDOW BEEN ACTIVE?
	AX = DE2Fh
Return: BX = status
	    0001h keyboard focus has been given to a direct window since the
		last call
	    0000h if not
Notes:	DESQview 2.50-2.53 are distributed as part of DESQview/X v1.00-1.10.
	Quarterdeck stated that this call would not be available under future
	  versions of DESQview Classic, but it is still present in v2.60