Compiler Error C2410

'identifier' : ambiguous member name in 'context'

The identifier is a member of more than one structure or union in this context.

Use a structure or union specifier on the operand that caused the error. A structure or union specifier is an identifier of type struct or union (a typedef name or a variable of the same type as the structure or union being referenced). The specifier must be the left operand of the first member-selection operator (.) to use the operand.