dear pals,
here is an annotated printer driver for grx. the documentation has not been updated, but if you understand the idea, it's easy to activate by consulting the include file. there is a function to query the printer driver possibilities (width, height and number of colors). using this information, a graphics context printable on the specific printer may be created. the doprinting and printtofile will print from the current context to the printer. return -1 on failure.
enjoy, alex