warning C6313: Incorrect operator: Zero-valued flag cannot be tested with bitwise-and. Use an equality test to check for zero-valued flags
This warning indicates that a constant value of zero was provided as an argument to the bitwise-and (&) operator in a test context. The resulting expression is constant and evaluates to false; the result is different than intended.
This is typically caused by using bitwise-and to test for a flag that has the value zero. To test zero-valued flags, a test for equality must be performed, for example, using == or !=.