I just trying to get to QLPreviewController.view. Indeed, I want to catch a tap event on its view to show/hide toolbar etc. I am trying:

```
QLPreviewController* qlpc = [QLPreviewController new];
    qlpc.delegate = self;
    qlpc.dataSource = self;
    qlpc.currentPreviewItemIndex=qlIndex;
    [navigator pushViewController:qlpc animated:YES];
    qlpc.title = [path lastPathComponent];
    [qlpc setToolbarItems:[NSArray arrayWithObjects:self.dirBrowserButton,self.space, self.editButton, self.btnSend, nil] animated:YES];
    UITapGestureRecognizer* gestTap  = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(showControls:)];
    gestTap.cancelsTouchesInView=NO;
    [qlpc.view addGestureRecognizer:[gestTap autorelease]];
    [qlpc release];

```

And nothing happens

If I attach UITapRecognizer onto navigationController.view, it fires only if I touch toolbar/navbar. UISwipeGestureRecognizer works fine in that case.

I tried to attach a transparent overlay view and add gesture recognizers on it, but no luck.
Well, I saw some apps that implements such a feature so obviously it is possible, but how?
Sorry, I googled all day long and didn't find any solution. Please, help me.