[SOLVED] Where I should write flush() function?

8Observer8

Hi,

Where I should write flush() function?

Here:
[CODE]
out.flush();
[/CODE]

or here:
[CODE]
mFile.flush();
[/CODE]

[CODE]
#include <QCoreApplication>
#include <QFile>
#include <QDebug>
#include <QTextStream>

void write(QString fileName) {
QFile mFile(fileName);

if (!mFile.open(QFile::WriteOnly | QFile::Text&#41;) {
    qDebug() << "Error: could not open file for writing";
    return;
}

QTextStream out(&mFile);
out << "Hello world";

// Here
out.flush();

// or here
mFile.flush();

mFile.close();

}

void read(QString fileName) {
QFile mFile(fileName);

if (!mFile.open(QFile::ReadOnly | QFile::Text&#41;) {
    qDebug() << "could not open file for reading";
    return;
}

QTextStream in(&mFile);
QString mText = in.readAll();

qDebug() << mText;

mFile.close();

}

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

QString fileName = "C:/Test/text.txt";

write(fileName);
read(fileName);

return a.exec(&#41;;

}
[/CODE]

Thank you!

raven-worx

in your case you can leave it out at all since it is called implicitly anyway by Qt.
On destruction of QFile close() is called which also calls flush().

IamSumit

Hello 8Observer8,
You need to understand the difference of these 2s:
void QTextStream::flush ()
Flushes any buffered data waiting to be written to the device.
If QTextStream operates on a string, this function does nothing.

bool QFile::flush ()
Flushes any buffered data to the file. Returns true if successful; otherwise returns false. [From Qt References]

8Observer8

Thank you, guys!

Jeroentjehome

If solved, place [SOLVED] in the title of your first post!

8Observer8

Sorry! Thank you :)