fileSystemModel->setRootPath(currentDir.absolutePath());
fileSystemModel->setFilter(fileSystemModel->filter() | QDir::System);
connect(this, SIGNAL(activated(QModelIndex)), this, SLOT(handleItemActivation(QModelIndex)));
fileSystemModel->setRootPath(currentDir.absolutePath());
fileSystemModel->setFilter(fileSystemModel->filter() | QDir::System);
connect(this, SIGNAL(activated(QModelIndex)), this, SLOT(handleItemActivation(QModelIndex)));