How to extract a resource from qrc (Solved)

[fronald]

Hi,

I need extract 1 file on first run of my desktop application. My resource is in a qrc.

How do it?

Thanks.

[pkj__]

QFile::copy(":/path/to/qrc", "path/to/copy");
copies the file from qrc to directory you specify. You can use other methods of QFile to load the file in memory.

[lgeyer]

Resources are completely transparent to the application and they might be treated as regular files, for example for copying (see previous post). The only restriction is that they are read-only, both the files itself (you cannot modify them) and the directory strucuture they are contained in (you cannot add or remove files to or from a resource collection).

[fronald]

Qt is wonderful -

My simple question have a simple answer.

Thanks!

[thanhxp]

@pkj__
I did as you said but I cannot write a QT resource file to a directory-structure-path.
Here is my code:

#include <QCoreApplication>
#include <QFile>
#include <QString>
#include <QDebug>
#include <QTextStream>
#include <iostream>

using namespace std;

void read(QString filename)
{
    QFile file(filename);
    if(!file.open(QFile::ReadOnly |
                  QFile::Text))
    {
        qDebug() << " Could not open the file for reading";
        return;
    }

    QTextStream in(&file);
    QString myText = in.readAll();

    // put QString into qDebug stream
    qDebug() << myText;

    file.close();
}

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

    read(":/resources/hello.pro");
    bool status = QFile::copy(":/resources/hello.pro" , "~/abc/hel.pro");
    if(status) {
            cout << "Success" << endl;
        } else {
            cout << "Failed" << endl;
        }


    return 0;
}

Could you help me why I am getting Failed. I am expecting that I will create a new folder named abc inside the current directory and copy the resource file into that.
Thank and best regards.

Thanh C. Tran

[mrjj]

@thanhxp
Hi
Copy will not make a new folder
You must do that yourself
QDir().mkdir("~/abc");

Update:
https://forum.qt.io/topic/72915/copy-qt-resource-file-into-filesystem/2

[thanhxp]

@mrjj
Thanks, problem solved.
Best regards,
Thanh C. Tran