[Qt-interest] QFile private member

[Andreas Pakulat]

On 10.02.09 16:54:00, Pete Christensen wrote:
> OK, cool. Andrew called it and Scott actually figured out that I know 
> nothing about C++ and then told me how to assign an actual object to a 
> pointer. (I think that's how to describe what's happening here.)

As was already said, this might get you into new issues if you don't
understand C++ that well.
 
> The other suggestions, including Andreas', using reference "file QFile" 

This works:

,----
| #include <QtCore>
| 
| class MyFile
| {
|         public:
|                 MyFile( const QString& f ) : file(f) { }
|                 QString fileName() { return file.fileName(); }
|         private:
|                 QFile file;
| };
| 
| int main(int argc, char** argv)
| {
|         MyFile f("foobar");
|         qDebug() << f.fileName();
| }
`----

Note that the file member variable is directly initialized with the
QString member. This does nothing other than calling the existing
QFile(const QString&) constructor. Unless I totally misread your
original post this is what you wanted.

> I'm pretty sure I'd need an explicit copy constructor to get that to 
> work. (And I'm finding there's nothing "plain" about C++, Andreas :))

No you don't, you just need to use an initializer list and the right
constructor.

And btw, if you find C++ "not so plain", then I suggest reading some
ruby or assembler ;)

Andreas

-- 
You will be reincarnated as a toad; and you will be much happier.