INT 15 - DESQview v2.50+ - "OBJNEXT" - TRAVERSE OBJECT LIST
        AX = DE2Bh
        ES:DI -> starting object
                0000h:0000h for first object in list???
Return: AX = status
            0000h successful
                ES:DI -> next object of same type (window/non-window)
            0001h failed (ES:DI was not a valid handle)
Notes:  DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x.
        there are two separate lists, one for window/task objects and one
          for all other objects
SeeAlso: AX=DE2Ah,AX=DE2Ch