emiting signals from const member functions !?

[sunil.thaha]

Is there a way to emit signals form const member functions;
I am getting errors :

In member function `float PayrollCreator::hraPercent() const':
BusinessLogic/PayrollCreator.cpp:516: error: passing `const PayrollCreator' as `this' argument of `void PayrollCreator::log(const QString&)' discards qualifiers

[wysota]

Make the slot const too.

[Matt Smith]

Is there a way to emit signals form const member functions;
I am getting errors :

There is a section on emitting signals from a const method in Practical Qt. It's on page 236.