Int 2F Fn 7005  - License Service API - Query License                      [N]

   AX = 7005h
   CX = license server index (0000h to 001Fh)
   DS:DX -> SLSQUERY structure (see below)
   ES:BX = provider specific handle for the license context

Return: AL = status
       00h not installed
       FFh installed

See Also: AX=7001h,AX=7002h

Format of SLSQUERY structure:
Offset Size    Description
 00h   DWORD   (return) status code
 04h   DWORD   handle identifying license context
 08h   DWORD   information index
 0Ch   DWORD   buffer size in bytes
 10h  N BYTEs  data buffer