Problem with QFile

[viciv919]

Hi
I want to put some text in a text file. If the file don't exists i want to create it.

here is my code for this.

QFile file("Output.txt");
    file.open(QIODevice::WriteOnly | QIODevice::Text);
    QTextStream out( &file );
 
    out << StrABeskrivning << endl;
    out << IntAPris << endl;
    out << StrBBeskrivning << endl;
    out << IntBPris;

QFile file("Output.txt");
    file.open(QIODevice::WriteOnly | QIODevice::Text);
    QTextStream out( &file );

    out << StrABeskrivning << endl;
    out << IntAPris << endl;
    out << StrBBeskrivning << endl;
    out << IntBPris;

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But when I compile it i get this error:
error: variable 'QTextStream out' has initializer but incomplete type

Do someone have a idea?

/
Victor

[wysota]

Add this to your file:

#include <QTextStream>

#include <QTextStream>

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[viciv919]

Thanks for your answer.
I still have a problem.
When i run the program it creates no text file.
I don't understand why.

[yogeshgokul]

Thanks for your answer.
I still have a problem.
When i run the program it creates no text file.
I don't understand why.

Please close the file after finished writing data.

[wysota]

Thanks for your answer.
I still have a problem.
When i run the program it creates no text file.
I don't understand why.

Maybe the file is created in a different directory than you expect (or not created at all because of lack of permissions). Please see what QFile::open() returns.

[progman]

Here is an example of a header I sometimes use in text files.....the first part of the code allows the user to select where to place the file and what name they want to give the file.

QString txtFile = QFileDialog::getSaveFileName(this, tr("Save Error Report"), ":",
                                                    tr("Error Report (*.txt)"));
     QFile txtF(txtFile);
 
     if(txtF.open(QFile::WriteOnly | QFile::Truncate))
     {
        QTextStream out(&txtF);
 
        out << "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\r\n";
        out << "~ Title of whatever your outputting...\r\n";
        out << "~ Date: " <<tr("%1 \r\n").arg(QDateTime::currentDateTime().toString());
        out << "~ File Name: "<< tr("%1 \r\n").arg(yourFileName);
        out << "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\r\n";
        out << "\r\n";
 
     txtF.close();

QString txtFile = QFileDialog::getSaveFileName(this, tr("Save Error Report"), ":",
                                                    tr("Error Report (*.txt)"));
     QFile txtF(txtFile);

     if(txtF.open(QFile::WriteOnly | QFile::Truncate))
     {
        QTextStream out(&txtF);

        out << "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\r\n";
        out << "~ Title of whatever your outputting...\r\n";
        out << "~ Date: " <<tr("%1 \r\n").arg(QDateTime::currentDateTime().toString());
        out << "~ File Name: "<< tr("%1 \r\n").arg(yourFileName);
        out << "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\r\n";
        out << "\r\n";

     txtF.close();

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Try that and see if it helps you any!