The virtual member function initDevice, called by the init function, initializes the dump device and writes its result to the file filename.

The virtual member function isBad returns IlTrue if the dumping device is not valid. This return value indicates an initialization problem.

The virtual member function end closes the dump device and does all the necessary cleaning.

The virtual member function send lets you send any character string to an output device so you can send information to the device.

The virtual member function newPage produces an output page and prepares the dump device for a new page. It returns IlFalse if there was an error. In this case, you should stop producing output data.

The virtual member function setTransformer lets you apply an additional transformer—that is, any geometric transformation— to the coordinates with which you “feed” the drawing functions.