Returns the screen rectangle for a given preview item. This method is optional.
Original signature is '- (NSRect)previewPanel:(QLPreviewPanel *)panel sourceFrameOnScreenForPreviewItem:(id <QLPreviewItem>)item'
Available in Mac OS X v10.6 and later.

C# | Visual Basic | Visual C++ |
public event QLPreviewPanel..::..PreviewPanelSourceFrameOnScreenForPreviewItemEventHandler PreviewPanelSourceFrameOnScreenForPreviewItem
Public Event PreviewPanelSourceFrameOnScreenForPreviewItem As QLPreviewPanel..::..PreviewPanelSourceFrameOnScreenForPreviewItemEventHandler
public: event QLPreviewPanel..::..PreviewPanelSourceFrameOnScreenForPreviewItemEventHandler^ PreviewPanelSourceFrameOnScreenForPreviewItem { void add (QLPreviewPanel..::..PreviewPanelSourceFrameOnScreenForPreviewItemEventHandler^ value); void remove (QLPreviewPanel..::..PreviewPanelSourceFrameOnScreenForPreviewItemEventHandler^ value); }

The screen rectangle for the given preview item. Return NSZeroRect if there is no origin point (this will produce a fade of the panel).

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later)