Unzip a zip file with C++ Qt

[tadamo]

Hello,

I want to unzip a zip file protected by a password that I set.
I retrieved for example Quazip and I found an example of code:

QuaZip zip("file.zip"); // put real zip file name here
zip.open(QuaZip::mdUnzip);
QuaZipFile file(&zip);
for(bool f=zip.goToFirstFile(); f; f=zip.goToNextFile()) {
    file.open(QIODevice::ReadOnly, "password"); // put real password here
    file.readData(data, maxSize);
    // process data from archive
    file.close();
}    
zip.close();

But this example does not work, I have an error in this line:

file.readData(data, maxSize);

readData seems to be a private member.

Do you have a simple example to unzip a zip file protected by password, please?

Thanks.

[JonB]

@tadamo
I don't have an example, and I don't see what relevance password has, but QuaZipFile derives from QIODevice, so aren't you supposed to use methods from that, like read()?