Int 15/AX=DE21h

DESQview v2.26+ - ASSERTVIR - CONTROL 386 SCREEN VIRTUALIZATION

AX = DE21h
BX = new state
0000h turn off
nonzero turn on

Return:
BX = old state of virtualization

Notes: This API call may be made from within a hardware interrupt handler. Under DV 2.40 and 2.42, this call appears to have no effect and always returns a nonzero value in BX which appears to be the offset within the DV common memory segment of the caller's task object; it may only have an effect within a hardware interrupt handler

See Also: AX=1117h - AX=DE17h

Category: DESQview/TopView and Quarterdeck Programs - Int 15h - D

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