Int 15 Fn DE1F  - Desqview V2.23+ - "dosuser" - Get Handle Of Task Curren  [Q]

   AX = DE1Fh

Return: BX = segment of task handle or 0000h if no tasks are using DOS

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

See Also: AX=DE13h,INT 21/AH=34h