Operand of __QueryInterface must be an interface [...] to the operator __QueryInterface

of __QueryInterface must be an interface reference [...] to the operator __QueryInterface

0199 Message : Interface '<interface name>' must [...] to access an interface

found for interface '<interface name>' Possible [...] An undefined interface

in interface '<interface [...] by the interface [...] by the interface. Example 346 .

0089 Message : Interface [...] }' of interface '{1 [...] in the interface. Error

of an interface reference of a [...] of the base interface "__SYSTEM.IQueryInterface

conversion of an interface [...] : Interface reference or FB interface 2nd operand

0094 Message : Interface [...] name>' of interface [...] of the first interface

Interface of overridden [...] >' of interface '<function [...] of the first interface