Compatibility: Win 3.x

Expects: AX    4002H

Returns: none

Info: VM-aware applications can intercept this fn.  The VDD calls it

when it is switching the application into the foreground.

Applications which access video memory while in the background

will be frozen by the VDD (if the screen is in an unsupported

video modes INT 2fH 4000H).  This fn notifies the VM-aware

application that it now has access to video memory.

If the application has not called INT 2fH 4000H (enable VM-

assisted video save/restore) then the VDD automatically restores

the screen before calling this fn.

See Also: INT 2fH 40xxH: Virtual Display Driver Functions

INT 2fH: Multiplex Interrupt

DOS Functions

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