How to declare a QFile as a member class

aurquiel

In the header of the class i did

header

QFile file;                                                   //File to write 
QDataStream out;                                 //To write in the file

void create_file();                                      //Function  to create in a file
void write_file(unsigned char *p);        //Function  to write in a file receive a pointer to the array buffer void delete_file();                                       //Function  to delete in a file

cpp

//Function to create a File
void backend::create_file()
{
    //Name of the file
    file("text.txt");

    //Creation of the file, mode writeonly
    file.open(QIODevice::WriteOnly);

}

//Function to write in a File
void backend::write_file(unsigned char *p)
{
    out(&file);
}

//Function to delete a File
void backend::delete_file()
{

}

In the header i can't declare mi fle like this QFile file("text.txt");
And in the cpp file("text.txt"); gives me error

/home/pasante/Escritorio/PIZZA/backend.cpp:1521: error: no match for call to ‘(QFile) (const char [9])’
file("text.txt");
^

out(&file); this gives me error too, but i can't put it in the headrer

/home/pasante/Escritorio/PIZZA/backend.cpp:1531: error: no match for call to ‘(QDataStream) (QFile*)’
out(&file);
^

mrjj

@aurquiel
Hi
QFile can also set the info via functions
http://doc.qt.io/qt-5/qfile.html#setFileName

and for out(&file);
http://doc.qt.io/qt-5/qdatastream.html#setDevice

The reason it dont work is that the first syntax is the constructor and that cant work the same when in .h

but both classes have function to set it.

Alternativ u can new them but its better with the setX functions. ( IMHO)