DOSMGR_Get_DOS_Crit_Status

include dosmgr.inc
 
VxDcall DOSMGR_Get_DOS_Crit_Status

Specifies whether it is possible to call MS-DOS at the current time (that is, whether MS-DOS is in a critical section).

This service is intended for use by the virtual page swap device to determine whether MS-DOS is currently available to page. This is an asynchronous service. Uses Flags.

• Sets the zero flag if MS-DOS can be called; otherwise, clears the zero flag if MS-DOS is in a critical section, and must not be called.

This service does not specify whether Windows is in a critical section, nor does it specify which virtual machine has ownership of MS-DOS.