[Qt-interest] Slow response when opening URL using QDesktopServices

[Jaco Naude]

Hi

I am experiencing some strange behavior when opening a older on windows
using QDesktopServices. My code is below. It basically gets a file name,
removes the file name from the path and then tries to open the folder.

void MainWindow::openFolder(const QString& folder_to_open) {

    btnClearLogClick();

    QDir folder_dir;

    folder_dir.setPath(folder_dir.fromNativeSeparators(folder_to_open));

    QStringList folder_tokens = folder_dir.absolutePath().split("/");

    if (folder_tokens.size() == 0) {

       logMessage("",MainWindow::Info);

       logMessage(QString("An error occurred when analyzing the file's
path."),MainWindow::Error);

      return;

    }

    folder_tokens.pop_back();

    QString folder_analyzed = folder_tokens.join("/");

    logMessage(QString("Opening folder:
%1").arg(folder_analyzed),MainWindow::Info);

    QDesktopServices explorer_service;

    explorer_service.openUrl(QUrl(QString("file:%1").arg(folder_analyzed)));

}


When I run this function, the GUI freezes for about 10 seconds and then
responds by opening the correct folder. When I debug it and step through the
function it works perfectly and I don't notice any delays. It only happens
the first time the application is opened, thus calling this function for a
second and third time etc. does not cause the delay.


Any ideas of what may cause thing?


Thanks,

Jaco
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