Open PDF using Button Click

[tndave]

Good afternoon,

Have a little problem , I am trying to open a PDF from a sub-directory in my application folder when a button or menu item is clicked. I have tried a couple different things but neither seem to work. They are as follows:

void MainWindow::on_actionManual_triggered()
{
    QDesktopServices::openUrl(QUrl::fromLocalFile(QDir::currentPath() + "/docs/" + "nameof.pdf"()));
 
}

void MainWindow::on_actionManual_triggered()
{
    QDesktopServices::openUrl(QUrl::fromLocalFile(QDir::currentPath() + "/docs/" + "nameof.pdf"()));

}

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and

void MainWindow::on_actionManual_triggered()
{
    //QDesktopServices::openUrl(QUrl("file:///docs/nameof.pdf"));
 
}

void MainWindow::on_actionManual_triggered()
{
    //QDesktopServices::openUrl(QUrl("file:///docs/nameof.pdf"));

}

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Neither work lol. I know I am probably missing something minor but can't put my finger on it.

Any suggestions?