Int 15 Fn DE13  - Desqview V2.20+ - "getcrit" - Get Critical Nesting Coun  [Q]

   AX = DE13h

Return: BX = number of calls to BEGINC or ENTERC (see INT 15/AX=101Bh,DE1Ch)
        without matching ENDC (see INT 15/AX=101Ch)

Note:  this API call may be made from within a hardware interrupt handler

See Also: AX=101Bh,AX=101Ch,AX=DE1Bh,AX=DE1Ch