The function 'interval' is never used.

When an object of a class is created, the constructors of all member variables are called consecutively in the order the variables are declared, even if you don't explicitly write them to the initialization list. You could avoid assigning 'm_userKey' a value by passing the value to the constructor in the initialization list.

The function 'readData' is never used.

Local variable 'wid' shadows outer variable

The function 'mousePressEvent' is never used.

The function 'ConfigurableItems' is never used.

The function 'StartCustomConfig' is never used.

The function 'IsConfigurable' is never used.