Problem with qurl and fromlocalfile

[zorro68]

I want to open a pdf file with the default browser. I try this:

QString path=QApplication::applicationDirPath()+"/manual.pdf";
	QUrl url;
	url.fromLocalFile(path);
	QDesktopServices::openUrl(url);

QString path=QApplication::applicationDirPath()+"/manual.pdf";
	QUrl url;
	url.fromLocalFile(path);
	QDesktopServices::openUrl(url);

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The path variable is ok, but the url variable is empty. Anyone knows what happend? or how to open a pdf file with qt (only a viewer)?

Thanks in advance