How to select file from MainMenu in Qt?

Question

I load all text files from my folder to the MainMenu in my Qt application.

void MainWindow::loadFilesToMainMenu() {
  QString pathToDir("/myfiles");

  QDirIterator it(pathToDir, QStringList() << "*.txt", QDir::Files, QDirIterator::Subdirectories);
  while (it.hasNext()) {
    QString curPathName = it.next();

    QStringList fileSegments = curPathName.split('/');
    QString curFileName = fileSegments.at(fileSegments.size() - 1);

    QAction* action = new QAction(tr(curFileName.toStdString().c_str()), this);

    action->setStatusTip(tr(curPathName.toStdString().c_str()));
    ui->menuFileList->addAction(action);

    // if new style selected?
    connect(action, SIGNAL(triggered()), this, SLOT(onLoadFile()));
  }
}

There I create QActions for all files in my folder 'myfiles' and I connect these each of these ations to the SLOT onLoadfile():

void MainWindow::onLoadFile() {
  QAction *action = qobject_cast<QAction *>(sender());
  if (action)
  {
    qDebug() << " onLoadFile " << action->data().toString();
  }
}

So each time I select one of those files in my MainMenu, this SLOt is triggered, but my debug message says:

onLoadFile ""

When I for instance select /myfiles/file1.txt

onLoadFile "/myfiles/file1.txt"

Wham am I missing? Thanx in advance

You should use [`QAction::setData()`](http://doc.qt.io/qt-4.8/qaction.html#setData) before trying to read the data — m.s., Jul 23 '15 at 12:29
As a side note: why do you wrap the file path string with the tr() function? There is nothing really to translate here... — Mailerdaimon, Jul 23 '15 at 12:31
@m.s. That helped, thanx! Could you please answer properly, so that I can mark is as answered? — MarkZltr, Jul 23 '15 at 12:33
@Mailerdaimon So I shall use tr only when there is nothing to translate? — MarkZltr, Jul 23 '15 at 12:34

score 0 · Answer 1 · answered Jul 24 '15 at 06:39

0

The answer from @m.s. solves my question very well...

You should use QAction::setData() before trying to read the data – m.s

answered Jul 24 '15 at 06:39

MarkZltr

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How to select file from MainMenu in Qt?

1 Answers1