Presents the progress panel as a sheet and begins the burn process.
Original signature is '- (void) beginProgressSheetForBurn:(DRBurn*)burn layout:(id)layout modalForWindow:(NSWindow*)docWindow'


- burn (DRBurn)
- The object performing the burn.
- layout (Id)
- The data to be burned to disc. See the DRBurn documentation for information on valid layouts.
- docWindow (NSWindow)
- The window the sheet will be attached to. If docWindow is not nil, the panel slides down as a sheet running as a document modal window. If owner is nil, this is an error.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)