Since I did not find any documentation for this in the web: If you are using Wt C++ Web toolkit and ever wondered, how to send parameters to a SLOT() there is a simple solution using the boost::bind routine.
Imagine you have an button, and an event that requires one parameter then you can setup the whole scenario like this:
void MyClass::test(std::string parameter)
cout << parameter << endl;
WPushButton *button = new WPushButton("Test", this);
button->clicked().connect(boost::bind(&MyClass::test, this, "Hello World!"));
The step which is often forgotten is to put the instance of the class right after the function pointer. (In this case “this”)