Iterate Over Struct; Easily Display Struct Fields And Values In a RichEdit Box

Question

Is there an easier way to display the struct fields and their corresponding values in RichEdit control?

This is what I am doing now:

<

Answer 1

I don't use C++ Builder, so some of the details of this are likely to be a bit off, but the general idea should be at least reasonably close:

class richedit_stream { 
    TRichEditControl &ctrl;
public:
    richedit_stream(TRichEditControl &trc) : ctrl(trc) {}

    template 
    richedit_stream &operator<<(T const &value) {
        std::stringstream buffer;
        buffer << value;
        ctrl.Lines->Append(value.str().c_str());
        return *this;
    }
};

The basic idea is pretty simple: a front-end for a richedit control, that provides a templated operator<<. The operator puts an item into a stringstream to convert it to a string. It then gets the resulting string and appends it to the the lines in the control. Since it's templated, it can work with all the usual types supported by a stringstream.

This does have shortcomings -- without more work, you won't be able to use manipulators to control formatting of the data as it's converted to a string. Since it's using a stringstream to convert things to strings, it's probably also a bit slower than your code explicitly encoding the type of each conversion. At the same time, you can use fairly clean, simple, idiomatic code in return for a fairly minimal investment.