Tells the delegate to open a file programmatically.
- macOS 10.0+
The object that sent the command.
The name of the file to open.
YES if the file was successfully opened or
NO if it was not.
Sent directly by
sender to the delegate to request that the file
filename be opened as a linked file. The method should open the file without bringing up its application’s user interface—that is, work with the file is under programmatic control of
sender, rather than under keyboard control of the user.