} else {
// this is a pattern slideshow, like sequence%4d.jpg
QString filter = url.fileName();
QString ext = filter.section('.', -1);
filter = filter.section('%', 0, -2);
} else {
// this is a pattern slideshow, like sequence%4d.jpg
QString filter = url.fileName();
QString ext = filter.section('.', -1);
filter = filter.section('%', 0, -2);