Class object thrown as exception

[Eligijus]

Hello,

I want to throw my created class Error object and catch it. Is this valid?
Example code:

#include <QCoreApplication>
#include <QDebug>

class Error
{
public:
    enum Type {
        ONE,
        TWO,
        THREE
    };

    Error() {}
    Error(Type type, const QString &item)
        : mType(type), mItem(item) {}

    Type type() const { return mType; }
    QString item() const { return mItem; }

private:
    Type mType;
    QString mItem;
};

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    try {
        throw Error(Error::TWO, "bla");
    } catch (const Error &e) {
        qDebug() << e.type() << e.item();
    }

    return a.exec();
}

[VRonin]

I can't see why not

[Eligijus]

@VRonin Thanks. I was concerned about using QString inside class Error and Error not deriving from some base exception class. Because in pure c++ people usually don't throw std::string as exception because std::string can throw exceptions as well. For that reason custom exceptions derive from std::exception.

[VRonin]

If you are using mutiple threads you can use QException base class. For the rest, Qt code itself should not throw in release code except probably for the unavoidable std::bad_alloc