How to create File in a given Dir ?

[revellix]

Hi,

I want to create a File in a given Directory.

f.e.:

QFile myFile("C:/Home/File.txt")

QFile myFile("C:/Home/File.txt")

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doing it the way above Qt doesnt create any File. I want to create a QDir (that works fine) and save all created Strems inside this QDir. Can anybody help?

[wysota]

Open the file in write mode.

[revellix]

this is my code:

QString str = QCoreApplication::applicationDirPath()+"/hello/";
    qDebug() << str;
 
    QFile Druck_m(str+"Druck.m");
    Druck_m.open(QIODevice::WriteOnly);
    QTextStream dataDruck_m(&Druck_m);
 
     ........stream

QString str = QCoreApplication::applicationDirPath()+"/hello/";
    qDebug() << str;

    QFile Druck_m(str+"Druck.m");
    Druck_m.open(QIODevice::WriteOnly);
    QTextStream dataDruck_m(&Druck_m);

     ........stream

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[wysota]

And? What about it?

[stampede]

Does the "hello" dir exists ? If not, you will probably get QFile::OpenError when trying to create a file in a non-existing directory.
You need to check return values, they can help a lot:

QString str = QCoreApplication::applicationDirPath()+"/hello/";
QFile Druck_m(str+"Druck.m");
if( Druck_m.open(QIODevice::WriteOnly) ){
    QTextStream dataDruck_m(&Druck_m);
...
} else{
    qDebug() << "file not opened, error code: " << Druck_m.error(); // error codes are desribed in QFile documentation
}

QString str = QCoreApplication::applicationDirPath()+"/hello/";
QFile Druck_m(str+"Druck.m");
if( Druck_m.open(QIODevice::WriteOnly) ){
    QTextStream dataDruck_m(&Druck_m);
...
} else{
    qDebug() << "file not opened, error code: " << Druck_m.error(); // error codes are desribed in QFile documentation
}

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