QTextStream object

[ShamusVW]

I am trying to use a QTextStream object as a data member as follows:

[in .h file]

private:
    QTextStream *out;

private:
    QTextStream *out;

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[in .cpp file]

QFile file(fileName);
    if (!file.open(QIODevice::Append | QIODevice::Text)) 
        return;
 
    out = new QTextStream(&file);
    out << "test";

QFile file(fileName);
    if (!file.open(QIODevice::Append | QIODevice::Text)) 
        return;

    out = new QTextStream(&file);
    out << "test";

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...

but it has a compile time error
error: invalid operands of types `QTextStream*' and `const char[5]' to binary `operator<<'

I then modified it to

QTextStream o(&file);
    out = &o;
    out << "test";

QTextStream o(&file);
    out = &o;
    out << "test";

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but still the same error.
Can someone please tell me the correct way to do this?

[Lykurg]

You have to use

*out << "test";

*out << "test";

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[ShamusVW]

That was [very] quick.
Thanks.

But can you then tell me why? It seems different to how other objects get declared and used?

[Lykurg]

if you use

out << "foo";

out << "foo";

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out is treated as a normal "plain" pointer (without any knowledge of QTextStrem) and operator << is applied for that. Only ofter dereference you can use the operator.

[ShamusVW]

I understand, thanks for that.