INT 2F - License Service API - QUERY License
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
SeeAlso: 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

See also: 2F7001

2F7005 - License Service API - QUERY License